Psychological and Electrophysiological Correlates of dementia with Lewy bodies and Parkinson's disease dementia

ISRCTN ISRCTN58368984
DOI https://doi.org/10.1186/ISRCTN58368984
Protocol serial number 10/10/2005
Sponsor King's College London (UK)
Funder King's College London (UK)
Submission date
02/06/2006
Registration date
15/09/2006
Last edited
25/05/2018
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Nervous System Diseases
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English summary of protocol

Not provided at time of registration

Contact information

Prof Clive Ballard
Scientific

King's College London
Wolfson CARD
Guy's Campus
London
SE1 1UL
United Kingdom

Study information

Primary study designInterventional
Study designWithin-subjects comparison design testing a possible healthcare intervention where the sequence in which the different forms of care received are randomised.
Secondary study designRandomised controlled trial
Scientific titleA randomised, repeated measures investigation of rhythmic auditory cues as a potential intervention for attentional fluctuations in dementia with Lewy bodies (DLB)/Parkinson's disease dementia (PDD)
Study acronymPECFC
Study objectivesDementia with Lewy bodies (DLB) accounts for 15% - 20% of late onset dementia whilst Parkinson's disease occurs in 1% of individuals over the age of 65; with at least 50% of these individuals developing symptoms of dementia (Parkinson's disease dementia - PDD). In addition to memory problems, people with these conditions experience persistent hallucinations, parkinsonian symptoms, marked problems with attention and fluctuating consciousness. Other symptoms that occur commonly include repeated falls, faints, temporary loss of consciousness, delusions and Rapid Eye Movement (REM) sleep behaviour disorder.

Rhythmic auditory cues can regulate attentional processes and fluctuating cognition in patients suffering from DLB or Parkinson's Disease Dementia (PDD) as reflected by a decrease in reaction time standard deviation variability in attentional tasks.
Ethics approval(s)South London and Maudsley NHS trust approved of protocol on 22 November 2005 (ref. no.: 05/Q0706/264).
Health condition(s) or problem(s) studiedDementia
InterventionBaseline versus rhythmic auditory cue versus rhythmic auditory cue at increased volume - a one-off assessment comparing patients baseline performance with performance under different experimental conditions.
Intervention typeOther
Primary outcome measure(s)

Reaction time standard deviation, measured at intervention.

Key secondary outcome measure(s)

Measured at intervention:
1. Attentional performance
2. Reaction time
3. Tapping speed
4. Tracking precision
5. Electroencephalogram (EEG) mean frequency variability
6. Frequency of occurrence of stimulus independent thoughts

Completion date01/10/2008

Eligibility

Participant type(s)Patient
Age groupSenior
SexAll
Target sample size at registration64
Key inclusion criteria1. Operationalised diagnosis of Dementia with Lewy Bodies (DLB), Parkinson’s Disease with Dementia (PDD), mild possible or probable Alzheimer’s Disease (AD), or Parkinson’s Disease (PD)
2. DLB and PDD patients must show clear signs of fluctuating cognition as indicated by a score eqaulling six on the One Day Fluctuation Assessment
3. Severity of dementia must be mild to moderate (Mini Mental State Examination [MMSE] greater than 14)
4. Capacity to give informed consent for participating in the study or Assent from Next of Kin (NOK)
5. Able to complete computerised test battery and understand instructions
6. Good hearing
7. Aged 63 - 89 years, either sex
Key exclusion criteria1. Symptoms or disabilities that would result in difficulties fulfilling the test requirements
2. Any diagnosis of another medical condition that in the eyes or the experimentor or investigator would prohibit partaking in the study
3. Ability to undergo 12 hour washout period from anti-parkinsonian medication before cognitive testing
Date of first enrolment01/07/2006
Date of final enrolment01/10/2008

Locations

Countries of recruitment

  • United Kingdom
  • England

Study participating centre

King's College London
London
SE1 1UL
United Kingdom

Results and Publications

Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot provided at time of registration
IPD sharing plan

Editorial Notes

24/05/2018: No publications found, verifying study status with principal investigator.
01/03/2016: No publications found, verifying study status with principal investigator.