Dementia With Lewy BodiesAlpha-DLBNCT05188105
Alpha tACS in Dementia With Lewy Bodies
A study testing Alpha tACS (12 Hz) over the occipital cortex in people with Dementia With Lewy Bodies and Lewy Body Disease, run by Azienda Socio Sanitaria Territoriale degli Spedali Civili di Brescia at 1 site in Italy.
Trial summary
Brain oscillations are ubiquitous in the human brain and have been implicated in cognitive and behavioral states defined in precisely tuned neural networks. In neurodegenerative disorders, neurodegeneration is accompanied by changes in oscillatory activity leading to the emerging concept of neurological and… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Dementia With Lewy Bodies, Lewy Body Disease
- What is being tested?
- Alpha tACS (12 Hz) over the occipital cortex
- Type of treatment
- Medical device
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 15 participants
- Where
- 1 siteItaly
- Study dates
- 18 Oct 2021to 20 Mar 2024
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Dementia with Lewy bodies (criteria according to McKeith, Neurology 2017).
Who cannot join
- Cerebrovascular disorders, previous stroke, hydrocephalus, and intra-cranial mass documented by MRI.
- History of traumatic brain injury or other neurological diseases.
- Serious medical illness other than DLB
- History of seizures
- Pregnancy
- Metal implants in the head (except dental fillings)
- Electronic implants (i.e. pace-maker, implanted medical pump)
- Age <18 years
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Interventional Cross-over Study to Evaluate the Efficacy of Transcranial Alternating Current Stimulation (tACS) on Cognitive Performance in Patients With Dementia With Lewy Bodies
Brain oscillations are ubiquitous in the human brain and have been implicated in cognitive and behavioral states defined in precisely tuned neural networks. In neurodegenerative disorders, neurodegeneration is accompanied by changes in oscillatory activity leading to the emerging concept of neurological and psychiatric disorders as "oscillopathies".
Dementia with Lewy bodies (DLB), which is the second most frequent cause of neurodegenerative dementia, is characterized by an important alteration of brain oscillations. The restoration of oscillations by neuronal entrainment in animal models of neurodegenerative disease has shown a significant reduction in the neuropathological load of toxic proteins, with a consequent significant increase in cognitive performance.
Read more
Transcranial alternating current brain stimulation (tACS), is a neurophysiological method of non-invasive modulation of the excitability of the central nervous system that is having an increasingly numerous spectrum of potential therapeutic applications. Recent studies have demonstrated the effectiveness of this method in modulating the natural frequencies of cerebral oscillation, underlying multiple cognitive processes such as verbal memory, perception and working memory.
On the basis of these premises, the treatment with alpha tACS is proposed in patients with DLB.
In this randomized, double-blind, sham-controlled, cross-over study, the investigators will evaluate whether a single stimulation with alpha tACS on the occipital lobes can improve symptoms in patients with DLB.
Read the detailed description
Brain oscillations are ubiquitous in the human brain and have been implicated in cognitive and behavioral states defined in precisely tuned neural networks. In neurodegenerative disorders, neurodegeneration is accompanied by changes in oscillatory activity leading to the emerging concept of neurological and psychiatric disorders as "oscillopathies".
Dementia with Lewy bodies (DLB), which is the second most frequent cause of neurodegenerative dementia, is characterized by an important alteration of brain oscillations. The restoration of oscillations by neuronal entrainment in animal models of neurodegenerative disease has shown a significant reduction in the neuropathological load of toxic proteins, with a consequent significant increase in cognitive performance.
Transcranial alternating current brain stimulation (tACS), is a neurophysiological method of non-invasive modulation of the excitability of the central nervous system that is having an increasingly numerous spectrum of potential therapeutic applications. Recent studies have demonstrated the effectiveness of this method in modulating the natural frequencies of cerebral oscillation, underlying multiple cognitive processes such as verbal memory, perception and working memory.
On the basis of these premises, the treatment with alpha tACS is proposed in patients with DLB.
In this randomized, double-blind, sham-controlled, cross-over study, the investigators will evaluate whether a single stimulation with alpha tACS on the occipital lobes can improve symptoms in patients with DLB.
Subjects will be randomized in two groups, one receiving a single treatment with alpha tACS (12 Hz) first and the other receiving sham stimulation. After one week the treatments will be exchanged. Patients will be evaluated with neuropsychological tests and neurophysiological measures of cholinergic transmission.
- Conditions
- Dementia With Lewy Bodies, Lewy Body Disease
- Being tested
- Alpha tACS (12 Hz) over the occipital cortex
- Keywords
- Dementia with Lewy bodies, Lewy Body Disease, Alpha stimulation, transcranial alternating current stimulation
- Medical subject headings
- Lewy Body Disease
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Alpha tACS (12 Hz) over the occipital cortexDevice
Single session of alpha tACS (12 Hz) over the occipital cortex
| Study group | Role | What they receive |
|---|---|---|
| real tACS | Experimental | Single session of alpha tACS (12 Hz) at 3 mA over the occipital cortex. Receives: Device: Alpha tACS (12 Hz) over the occipital cortex |
| sham tACS | Placebo comparator | Single session of sham tACS over the occipital cortex. Receives: Device: Alpha tACS (12 Hz) over the occipital cortex |
What is being measured
The primary outcome is the main question the study is designed to answer.
Changes in Visual Search Task Test scores
The visual search task requires participants to determine whether a target (such as a particular letter, shape, or image) is present in an array of other stimuli. The task consists of two parts, each with 64 stimuli, for a total of 128 stimuli. Participants are asked to look at the screen and press a button if the target stimulus is present or another button if the target stimulus is absent. After pressing the chosen button, a feedback will appear on the screen that will tell the subject if his answer is correct or incorrect. Subjects must respond as quickly as possible, otherwise the answer will be considered missed and they will proceed to the next screen.
The score ranges from 0 (worse performance) to 128 (best performance).
Measured: 40 minutes after the start of the intervention
Secondary outcomes (7)
Changes in Rey Auditory Verbal Learning Test scores
Participants are given a list of 15 unrelated words repeated over five different trials and are asked to repeat. Another list of 15 unrelated words are given and the patient must again repeat the original list of 15 words and then again after 30 minutes.
The score ranges from 0 (worse performance) to 15 (best performance).
Measured: Baseline (immediately before the intervention) - Immediately after the intervention
Changes in Trail Making Test Part A
The Trail Making Test Part A consists of 25 circles on a piece of paper with the numbers 1-25 written randomly in the circles. The test taker's task is to start with number one and draw a line from that circle to the circle with the number two in it to the circle with the three in it, etc. The person continues to connect the circles in numerical order until they reach number 25.
Scoring is based on time taken to complete the test with lower scores being better.
Measured: Baseline (immediately before the intervention) - Immediately after the intervention
Changes in Trail Making Test Part B
The Trail Making Test Part B consists of 24 circles on a piece of paper, but rather than all of the circles containing numbers, half of the circles have the numbers 1-12 in them and the other half (12) contain the letters A-L. The person taking the test has to draw a line from one circle to the next in ascending order; however, he must alternate the circles with numbers in them (1-13) with circles with letters in them (A-L). In other words, he is to connect the circles in order like this: 1-A-2-B-3-C-4-D-5-E and so on.
Scoring is based on time taken to complete the test with lower scores being better.
Measured: Baseline (immediately before the intervention) - Immediately after the intervention
Changes in relative alpha power in occipital EEG leads
By using electroencephalography (EEG), the investigators will evaluate the effects of alpha tACS on relative alpha power in occipital EEG leads.
Measured: Baseline (immediately before the intervention) - Immediately after the intervention
Change in SAI measurements
By using transcranial magnetic stimulation (TMS), the investigators will evaluate the effects of alpha tACS on short latency afferent inhibition (SAI), which is a marker of cholinergic transmission.
Measured: Baseline (immediately before the intervention) - Immediately after the intervention
Change in SICI measurements
By using transcranial magnetic stimulation (TMS), the investigators will evaluate the effects of alpha tACS on short interval intracortical inhibition (SICI), which is a marker of GABAergic transmission.
Measured: Baseline (immediately before the intervention) - Immediately after the intervention
Change in ICF measurements
By using transcranial magnetic stimulation (TMS), the investigators will evaluate the effects of alpha tACS on intracortical facilitation (ICF), which is a marker of glutamatergic transmission.
Measured: Baseline (immediately before the intervention) - Immediately after the intervention
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Jan 2022
- Study start18 Oct 2021
- Primary completion10 Mar 2024
- Study completion20 Mar 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (16)Papers the sponsor has linked to this study.
- Other trials for Dementia With Lewy BodiesStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Quadruple blind
- Who is masked
- Participant, Care provider, Investigator, Outcomes assessor
- Enrolment
- 15 participants (actual)
Sponsor and investigators
- Lead sponsor
- Azienda Socio Sanitaria Territoriale degli Spedali Civili di Brescia
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Barbara Borroni, Azienda Socio Sanitaria Territoriale degli Spedali Civili di Brescia
- Investigators
- Barbara Borroni, MD, Principal investigator, Asst Degli Spedali Civili Di BresciaAlberto Benussi, MD, Principal investigator, Asst Degli Spedali Civili Di Brescia
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05188105
- Sponsor's protocol ID
- NP4758
- Acronym
- Alpha-DLB
- Status last verified
- Mar 2024
- First submitted
- 14 Nov 2021
- Last updated
- 28 Mar 2024
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: All data, including outcome measure results, study protocol and statistical analysis plan, will be shared upon reasonable request.
Publications
McKeith IG, Boeve BF, Dickson DW, Halliday G, Taylor JP, Weintraub D, Aarsland D, Galvin J, Attems J, Ballard CG, Bayston A, Beach TG, Blanc F, Bohnen N, Bonanni L, Bras J, Brundin P, Burn D, Chen-Plotkin A, Duda JE, El-Agnaf O, Feldman H, Ferman TJ, Ffytche D, Fujishiro H, Galasko D, Goldman JG, Gomperts SN, Graff-Radford NR, Honig LS, Iranzo A, Kantarci K, Kaufer D, Kukull W, Lee VMY, Leverenz JB, Lewis S, Lippa C, Lunde A, Masellis M, Masliah E, McLean P, Mollenhauer B, Montine TJ, Moreno E, Mori E, Murray M, O'Brien JT, Orimo S, Postuma RB, Ramaswamy S, Ross OA, Salmon DP, Singleton A, Taylor A, Thomas A, Tiraboschi P, Toledo JB, Trojanowski JQ, Tsuang D, Walker Z, Yamada M, Kosaka K. Diagnosis and management of dementia with Lewy bodies: Fourth consensus report of the DLB Consortium. Neurology. 2017 Jul 4;89(1):88-100. doi: 10.1212/WNL.0000000000004058. Epub 2017 Jun 7.
PubMed 28592453Franciotti R, Pilotto A, Moretti DV, Falasca NW, Arnaldi D, Taylor JP, Nobili F, Kramberger M, Ptacek SG, Padovani A, Aarlsand D, Onofrj M, Bonanni L; E-DLB consortium. Anterior EEG slowing in dementia with Lewy bodies: a multicenter European cohort study. Neurobiol Aging. 2020 Sep;93:55-60. doi: 10.1016/j.neurobiolaging.2020.04.023. Epub 2020 Apr 29.
PubMed 32450445Aoki Y, Kazui H, Pascal-Marqui RD, Ishii R, Yoshiyama K, Kanemoto H, Suzuki Y, Sato S, Hata M, Canuet L, Iwase M, Ikeda M. EEG Resting-State Networks in Dementia with Lewy Bodies Associated with Clinical Symptoms. Neuropsychobiology. 2019;77(4):206-218. doi: 10.1159/000495620. Epub 2019 Jan 17.
PubMed 30654367Schumacher J, Thomas AJ, Peraza LR, Firbank M, Cromarty R, Hamilton CA, Donaghy PC, O'Brien JT, Taylor JP. EEG alpha reactivity and cholinergic system integrity in Lewy body dementia and Alzheimer's disease. Alzheimers Res Ther. 2020 Apr 22;12(1):46. doi: 10.1186/s13195-020-00613-6.
PubMed 32321573Schumacher J, Taylor JP, Hamilton CA, Firbank M, Cromarty RA, Donaghy PC, Roberts G, Allan L, Lloyd J, Durcan R, Barnett N, O'Brien JT, Thomas AJ. Quantitative EEG as a biomarker in mild cognitive impairment with Lewy bodies. Alzheimers Res Ther. 2020 Jul 8;12(1):82. doi: 10.1186/s13195-020-00650-1.
PubMed 32641111Bonanni L, Franciotti R, Nobili F, Kramberger MG, Taylor JP, Garcia-Ptacek S, Falasca NW, Fama F, Cromarty R, Onofrj M, Aarsland D; E-DLB study group. EEG Markers of Dementia with Lewy Bodies: A Multicenter Cohort Study. J Alzheimers Dis. 2016 Oct 18;54(4):1649-1657. doi: 10.3233/JAD-160435.
PubMed 27589528Pascarelli MT, Del Percio C, De Pandis MF, Ferri R, Lizio R, Noce G, Lopez S, Rizzo M, Soricelli A, Nobili F, Arnaldi D, Fama F, Orzi F, Buttinelli C, Giubilei F, Salvetti M, Cipollini V, Franciotti R, Onofri M, Fuhr P, Gschwandtner U, Ransmayr G, Aarsland D, Parnetti L, Farotti L, Marizzoni M, D'Antonio F, De Lena C, Guntekin B, Hanoglu L, Yener G, Emek-Savas DD, Triggiani AI, Paul Taylor J, McKeith I, Stocchi F, Vacca L, Hampel H, Frisoni GB, Bonanni L, Babiloni C. Abnormalities of resting-state EEG in patients with prodromal and overt dementia with Lewy bodies: Relation to clinical symptoms. Clin Neurophysiol. 2020 Nov;131(11):2716-2731. doi: 10.1016/j.clinph.2020.09.004. Epub 2020 Sep 23.
PubMed 33039748van Dellen E, de Waal H, van der Flier WM, Lemstra AW, Slooter AJ, Smits LL, van Straaten EC, Stam CJ, Scheltens P. Loss of EEG Network Efficiency Is Related to Cognitive Impairment in Dementia With Lewy Bodies. Mov Disord. 2015 Nov;30(13):1785-93. doi: 10.1002/mds.26309. Epub 2015 Jul 16.
PubMed 26179663Briel RC, McKeith IG, Barker WA, Hewitt Y, Perry RH, Ince PG, Fairbairn AF. EEG findings in dementia with Lewy bodies and Alzheimer's disease. J Neurol Neurosurg Psychiatry. 1999 Mar;66(3):401-3. doi: 10.1136/jnnp.66.3.401.
PubMed 10084544Bonanni L, Thomas A, Tiraboschi P, Perfetti B, Varanese S, Onofrj M. EEG comparisons in early Alzheimer's disease, dementia with Lewy bodies and Parkinson's disease with dementia patients with a 2-year follow-up. Brain. 2008 Mar;131(Pt 3):690-705. doi: 10.1093/brain/awm322. Epub 2008 Jan 17.
PubMed 18202105Massa F, Meli R, Grazzini M, Fama F, De Carli F, Filippi L, Arnaldi D, Pardini M, Morbelli S, Nobili F. Utility of quantitative EEG in early Lewy body disease. Parkinsonism Relat Disord. 2020 Jun;75:70-75. doi: 10.1016/j.parkreldis.2020.05.007. Epub 2020 May 24.
PubMed 32480310Dauwan M, van Dellen E, van Boxtel L, van Straaten ECW, de Waal H, Lemstra AW, Gouw AA, van der Flier WM, Scheltens P, Sommer IE, Stam CJ. EEG-directed connectivity from posterior brain regions is decreased in dementia with Lewy bodies: a comparison with Alzheimer's disease and controls. Neurobiol Aging. 2016 May;41:122-129. doi: 10.1016/j.neurobiolaging.2016.02.017. Epub 2016 Feb 21.
PubMed 27103525Babiloni C, Del Percio C, Lizio R, Noce G, Lopez S, Soricelli A, Ferri R, Nobili F, Arnaldi D, Fama F, Aarsland D, Orzi F, Buttinelli C, Giubilei F, Onofrj M, Stocchi F, Stirpe P, Fuhr P, Gschwandtner U, Ransmayr G, Garn H, Fraioli L, Pievani M, Frisoni GB, D'Antonio F, De Lena C, Guntekin B, Hanoglu L, Basar E, Yener G, Emek-Savas DD, Triggiani AI, Franciotti R, Taylor JP, Vacca L, De Pandis MF, Bonanni L. Abnormalities of resting-state functional cortical connectivity in patients with dementia due to Alzheimer's and Lewy body diseases: an EEG study. Neurobiol Aging. 2018 May;65:18-40. doi: 10.1016/j.neurobiolaging.2017.12.023. Epub 2017 Dec 30.
PubMed 29407464Babiloni C, Del Percio C, Lizio R, Noce G, Cordone S, Lopez S, Soricelli A, Ferri R, Pascarelli MT, Nobili F, Arnaldi D, Aarsland D, Orzi F, Buttinelli C, Giubilei F, Onofrj M, Stocchi F, Stirpe P, Fuhr P, Gschwandtner U, Ransmayr G, Caravias G, Garn H, Sorpresi F, Pievani M, Frisoni GB, D'Antonio F, De Lena C, Guntekin B, Hanoglu L, Basar E, Yener G, Emek-Savas DD, Triggiani AI, Franciotti R, De Pandis MF, Bonanni L. Abnormalities of cortical neural synchronization mechanisms in patients with dementia due to Alzheimer's and Lewy body diseases: an EEG study. Neurobiol Aging. 2017 Jul;55:143-158. doi: 10.1016/j.neurobiolaging.2017.03.030. Epub 2017 Apr 5.
PubMed 28454845Tavakoli AV, Yun K. Transcranial Alternating Current Stimulation (tACS) Mechanisms and Protocols. Front Cell Neurosci. 2017 Sep 1;11:214. doi: 10.3389/fncel.2017.00214. eCollection 2017.
PubMed 28928634
Study at a glance
From the registry record, last updated by the sponsor on 28 Mar 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Interventional Cross-over Study to Evaluate the Efficacy of Transcranial Alternating Current Stimulation (tACS) on Cognitive Performance in Patients With Dementia With Lewy Bodies
- ClinicalTrials.gov ID
- NCT05188105
- Acronym / sponsor ID
- Alpha-DLB / NP4758
- Conditions
- Dementia With Lewy Bodies, Lewy Body Disease
- Keywords
- Dementia with Lewy bodies, Lewy Body Disease, Alpha stimulation, transcranial alternating current stimulation
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 15 participants (actual)
- Lead sponsor
- Azienda Socio Sanitaria Territoriale degli Spedali Civili di BresciaUniversity, hospital or other
- Study start
- 18 Oct 2021 (actual)
- Primary completion
- 10 Mar 2024 (actual)
- Study completion
- 20 Mar 2024 (actual)
- First posted
- 12 Jan 2022 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Brain oscillations are ubiquitous in the human brain and have been implicated in cognitive and behavioral states defined in precisely tuned neural networks. In neurodegenerative disorders, neurodegeneration is accompanied by changes in oscillatory activity leading to the emerging concept of neurological and psychiatric disorders as "oscillopathies".
Dementia with Lewy bodies (DLB), which is the second most frequent cause of neurodegenerative dementia, is characterized by an important alteration of brain oscillations. The restoration of oscillations by neuronal entrainment in animal models of neurodegenerative disease has shown a significant reduction in the neuropathological load of toxic proteins, with a consequent significant increase in cognitive performance.
Transcranial alternating current brain stimulation (tACS), is a neurophysiological method of non-invasive modulation of the excitability of the central nervous system that is having an increasingly numerous spectrum of potential therapeutic applications. Recent studies have demonstrated the effectiveness of this method in modulating the natural frequencies of cerebral oscillation, underlying multiple cognitive processes such as verbal memory, perception and working memory.
On the basis of these premises, the treatment with alpha tACS is proposed in patients with DLB.
In this randomized, double-blind, sham-controlled, cross-over study, the investigators will evaluate whether a single stimulation with alpha tACS on the occipital lobes can improve symptoms in patients with DLB.
Detailed description
Brain oscillations are ubiquitous in the human brain and have been implicated in cognitive and behavioral states defined in precisely tuned neural networks. In neurodegenerative disorders, neurodegeneration is accompanied by changes in oscillatory activity leading to the emerging concept of neurological and psychiatric disorders as "oscillopathies".
Dementia with Lewy bodies (DLB), which is the second most frequent cause of neurodegenerative dementia, is characterized by an important alteration of brain oscillations. The restoration of oscillations by neuronal entrainment in animal models of neurodegenerative disease has shown a significant reduction in the neuropathological load of toxic proteins, with a consequent significant increase in cognitive performance.
Transcranial alternating current brain stimulation (tACS), is a neurophysiological method of non-invasive modulation of the excitability of the central nervous system that is having an increasingly numerous spectrum of potential therapeutic applications. Recent studies have demonstrated the effectiveness of this method in modulating the natural frequencies of cerebral oscillation, underlying multiple cognitive processes such as verbal memory, perception and working memory.
On the basis of these premises, the treatment with alpha tACS is proposed in patients with DLB.
In this randomized, double-blind, sham-controlled, cross-over study, the investigators will evaluate whether a single stimulation with alpha tACS on the occipital lobes can improve symptoms in patients with DLB.
Subjects will be randomized in two groups, one receiving a single treatment with alpha tACS (12 Hz) first and the other receiving sham stimulation. After one week the treatments will be exchanged. Patients will be evaluated with neuropsychological tests and neurophysiological measures of cholinergic transmission.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Quadruple blind (participant, care provider, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| real tACS | Experimental | Device: Alpha tACS (12 Hz) over the occipital cortexSingle session of alpha tACS (12 Hz) at 3 mA over the occipital cortex. |
| sham tACS | Placebo comparator | Device: Alpha tACS (12 Hz) over the occipital cortexSingle session of sham tACS over the occipital cortex. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- Dementia with Lewy bodies (criteria according to McKeith, Neurology 2017).
Key exclusion criteria (8 listed)
- Cerebrovascular disorders, previous stroke, hydrocephalus, and intra-cranial mass documented by MRI.
- History of traumatic brain injury or other neurological diseases.
- Serious medical illness other than DLB
- History of seizures
- Pregnancy
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Alpha tACS (12 Hz) over the occipital cortexSingle session of alpha tACS (12 Hz) over the occipital cortex | Device | real tACS, sham tACS |
Primary outcome
Changes in Visual Search Task Test scores
Time frame: 40 minutes after the start of the intervention
The visual search task requires participants to determine whether a target (such as a particular letter, shape, or image) is present in an array of other stimuli. The task consists of two parts, each with 64 stimuli, for a total of 128 stimuli. Participants are asked to look at the screen and press a button if the target stimulus is present or another button if the target stimulus is absent. After pressing the chosen button, a feedback will appear on the screen that will tell the subject if his answer is correct or incorrect. Subjects must respond as quickly as possible, otherwise the answer will be considered missed and they will proceed to the next screen. The score ranges from 0 (worse performance) to 128 (best performance).
7 secondary outcomes
Changes in Rey Auditory Verbal Learning Test scores
Time frame: Baseline (immediately before the intervention) - Immediately after the intervention
Changes in Trail Making Test Part A
Time frame: Baseline (immediately before the intervention) - Immediately after the intervention
Changes in Trail Making Test Part B
Time frame: Baseline (immediately before the intervention) - Immediately after the intervention
Changes in relative alpha power in occipital EEG leads
Time frame: Baseline (immediately before the intervention) - Immediately after the intervention
Change in SAI measurements
Time frame: Baseline (immediately before the intervention) - Immediately after the intervention
Change in SICI measurements
Time frame: Baseline (immediately before the intervention) - Immediately after the intervention
Change in ICF measurements
Time frame: Baseline (immediately before the intervention) - Immediately after the intervention
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 28 Mar 2024.
- Background: PubMed 28592453McKeith IG, Boeve BF, Dickson DW, Halliday G, Taylor JP, Weintraub D, Aarsland D, Galvin J, Attems J, Ballard CG, Bayston A, Beach TG, Blanc F, Bohnen N, Bonanni L, Bras J, Brundin P, Burn D, Chen-Plotkin A, Duda JE, El-Agnaf O, Feldman H, Ferman TJ, Ffytche D, Fujishiro H, Galasko D, Goldman JG, Gomperts SN, Graff-Radford NR, Honig LS, Iranzo A, Kantarci K, Kaufer D, Kukull W, Lee VMY, Leverenz JB, Lewis S, Lippa C, Lunde A, Masellis M, Masliah E, McLean P, Mollenhauer B, Montine TJ, Moreno E, Mori E, Murray M, O'Brien JT, Orimo S, Postuma RB, Ramaswamy S, Ross OA, Salmon DP, Singleton A, Taylor A, Thomas A, Tiraboschi P, Toledo JB, Trojanowski JQ, Tsuang D, Walker Z, Yamada M, Kosaka K. Diagnosis and management of dementia with Lewy bodies: Fourth consensus report of the DLB Consortium. Neurology. 2017 Jul 4;89(1):88-100. doi: 10.1212/WNL.0000000000004058. Epub 2017 Jun 7.
- Background: PubMed 32450445Franciotti R, Pilotto A, Moretti DV, Falasca NW, Arnaldi D, Taylor JP, Nobili F, Kramberger M, Ptacek SG, Padovani A, Aarlsand D, Onofrj M, Bonanni L; E-DLB consortium. Anterior EEG slowing in dementia with Lewy bodies: a multicenter European cohort study. Neurobiol Aging. 2020 Sep;93:55-60. doi: 10.1016/j.neurobiolaging.2020.04.023. Epub 2020 Apr 29.
- Background: PubMed 30654367Aoki Y, Kazui H, Pascal-Marqui RD, Ishii R, Yoshiyama K, Kanemoto H, Suzuki Y, Sato S, Hata M, Canuet L, Iwase M, Ikeda M. EEG Resting-State Networks in Dementia with Lewy Bodies Associated with Clinical Symptoms. Neuropsychobiology. 2019;77(4):206-218. doi: 10.1159/000495620. Epub 2019 Jan 17.
- Background: PubMed 32321573Schumacher J, Thomas AJ, Peraza LR, Firbank M, Cromarty R, Hamilton CA, Donaghy PC, O'Brien JT, Taylor JP. EEG alpha reactivity and cholinergic system integrity in Lewy body dementia and Alzheimer's disease. Alzheimers Res Ther. 2020 Apr 22;12(1):46. doi: 10.1186/s13195-020-00613-6.
- Background: PubMed 32641111Schumacher J, Taylor JP, Hamilton CA, Firbank M, Cromarty RA, Donaghy PC, Roberts G, Allan L, Lloyd J, Durcan R, Barnett N, O'Brien JT, Thomas AJ. Quantitative EEG as a biomarker in mild cognitive impairment with Lewy bodies. Alzheimers Res Ther. 2020 Jul 8;12(1):82. doi: 10.1186/s13195-020-00650-1.
- Background: PubMed 27589528Bonanni L, Franciotti R, Nobili F, Kramberger MG, Taylor JP, Garcia-Ptacek S, Falasca NW, Fama F, Cromarty R, Onofrj M, Aarsland D; E-DLB study group. EEG Markers of Dementia with Lewy Bodies: A Multicenter Cohort Study. J Alzheimers Dis. 2016 Oct 18;54(4):1649-1657. doi: 10.3233/JAD-160435.
- Background: PubMed 33039748Pascarelli MT, Del Percio C, De Pandis MF, Ferri R, Lizio R, Noce G, Lopez S, Rizzo M, Soricelli A, Nobili F, Arnaldi D, Fama F, Orzi F, Buttinelli C, Giubilei F, Salvetti M, Cipollini V, Franciotti R, Onofri M, Fuhr P, Gschwandtner U, Ransmayr G, Aarsland D, Parnetti L, Farotti L, Marizzoni M, D'Antonio F, De Lena C, Guntekin B, Hanoglu L, Yener G, Emek-Savas DD, Triggiani AI, Paul Taylor J, McKeith I, Stocchi F, Vacca L, Hampel H, Frisoni GB, Bonanni L, Babiloni C. Abnormalities of resting-state EEG in patients with prodromal and overt dementia with Lewy bodies: Relation to clinical symptoms. Clin Neurophysiol. 2020 Nov;131(11):2716-2731. doi: 10.1016/j.clinph.2020.09.004. Epub 2020 Sep 23.
- Background: PubMed 26179663van Dellen E, de Waal H, van der Flier WM, Lemstra AW, Slooter AJ, Smits LL, van Straaten EC, Stam CJ, Scheltens P. Loss of EEG Network Efficiency Is Related to Cognitive Impairment in Dementia With Lewy Bodies. Mov Disord. 2015 Nov;30(13):1785-93. doi: 10.1002/mds.26309. Epub 2015 Jul 16.
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- Background: PubMed 32480310Massa F, Meli R, Grazzini M, Fama F, De Carli F, Filippi L, Arnaldi D, Pardini M, Morbelli S, Nobili F. Utility of quantitative EEG in early Lewy body disease. Parkinsonism Relat Disord. 2020 Jun;75:70-75. doi: 10.1016/j.parkreldis.2020.05.007. Epub 2020 May 24.
- Background: PubMed 27103525Dauwan M, van Dellen E, van Boxtel L, van Straaten ECW, de Waal H, Lemstra AW, Gouw AA, van der Flier WM, Scheltens P, Sommer IE, Stam CJ. EEG-directed connectivity from posterior brain regions is decreased in dementia with Lewy bodies: a comparison with Alzheimer's disease and controls. Neurobiol Aging. 2016 May;41:122-129. doi: 10.1016/j.neurobiolaging.2016.02.017. Epub 2016 Feb 21.
- Individual participant dataSharing planned: Yes. All data, including outcome measure results, study protocol and statistical analysis plan, will be shared upon reasonable request.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Barbara Borroni, MD principal investigator
Asst Degli Spedali Civili Di Brescia
Alberto Benussi, MD principal investigator
Asst Degli Spedali Civili Di Brescia
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Alpha tACS (12 Hz) over the occipital cortex in people with Dementia With Lewy Bodies and Lewy Body Disease, run by Azienda Socio Sanitaria Territoriale degli Spedali Civili di Brescia at 1 site in Italy.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 28 Mar 2024. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Italy. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Changes in Visual Search Task Test scores (time frame: 40 minutes after the start of the intervention). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT05188105, which also lists 16 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Mar 2024.