Perception in Parkinson's Disease

NCT ID: NCT05483036

Last Updated: 2025-09-19

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

54 participants

Study Classification

OBSERVATIONAL

Study Start Date

2022-09-01

Study Completion Date

2025-05-01

Brief Summary

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The investigators plan to examine the relation of perceptual variables-basic vision, unusual perceptual experiences(including but not limited to visual hallucinations)-to relevant functional variables such as cognition, mood, and alertness/sleepiness in an online sample of persons with Parkinson's disease (PwPD). It is hypothesized that unusual perceptual experiences will relate significantly to the selected variables. Participants do not need to experience visual hallucinations to be able to participate in this study. This is an observational study only, and not an interventional study.

Detailed Description

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For this study, the investigators propose to conduct an online study of PwPD (proposing a total of 60 participants) to examine the relations among variables that may relate to perception in PD. Those PwPD who express interest will be sent a link to an online survey (Qualtrics). The investigators will collect demographic and health information, followed by questionnaires assessing unusual perceptual experiences, mood, motivation, sleep, fatigue and quality of life. The survey should take roughly 45 minutes to an hour to complete.

Compensation: A $20 Amazon gift card will be offered to those who complete the survey all the way through with good effort.

Conditions

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Parkinson's Disease Perception Visual Hallucination

Study Design

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Observational Model Type

CASE_ONLY

Study Time Perspective

CROSS_SECTIONAL

Study Groups

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Persons with Parkinson's disease (PwPD)

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* Participants must be at least 40 years old
* Have a self-reported diagnosis of idiopathic PD
* Be proficient English speakers
* Have functional vision
* Have internet access, and access to a desktop computer or laptop

Exclusion Criteria

* Self-reported poor vision (non-functional range)
* Lack of access to internet and either a desktop computer or laptop
Minimum Eligible Age

40 Years

Maximum Eligible Age

110 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Boston University Charles River Campus

OTHER

Sponsor Role lead

Responsible Party

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Alice Cronin-Golomb

Director, Vision and Cognition Laboratory

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Alice Cronin-Golomb, PhD

Role: PRINCIPAL_INVESTIGATOR

Boston University

Locations

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Vision and Cognition Laboratory, Boston University

Boston, Massachusetts, United States

Site Status

Countries

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United States

References

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Schapira AHV, Chaudhuri KR, Jenner P. Non-motor features of Parkinson disease. Nat Rev Neurosci. 2017 Jul;18(7):435-450. doi: 10.1038/nrn.2017.62. Epub 2017 Jun 8.

Reference Type BACKGROUND
PMID: 28592904 (View on PubMed)

Barnes J, David AS. Visual hallucinations in Parkinson's disease: a review and phenomenological survey. J Neurol Neurosurg Psychiatry. 2001 Jun;70(6):727-33. doi: 10.1136/jnnp.70.6.727.

Reference Type BACKGROUND
PMID: 11385004 (View on PubMed)

Chang A, Fox SH. Psychosis in Parkinson's Disease: Epidemiology, Pathophysiology, and Management. Drugs. 2016 Jul;76(11):1093-118. doi: 10.1007/s40265-016-0600-5.

Reference Type BACKGROUND
PMID: 27312429 (View on PubMed)

Fenelon G, Mahieux F, Huon R, Ziegler M. Hallucinations in Parkinson's disease: prevalence, phenomenology and risk factors. Brain. 2000 Apr;123 ( Pt 4):733-45. doi: 10.1093/brain/123.4.733.

Reference Type BACKGROUND
PMID: 10734005 (View on PubMed)

Gibson G, Mottram PG, Burn DJ, Hindle JV, Landau S, Samuel M, Hurt CS, Brown RG, M Wilson KC. Frequency, prevalence, incidence and risk factors associated with visual hallucinations in a sample of patients with Parkinson's disease: a longitudinal 4-year study. Int J Geriatr Psychiatry. 2013 Jun;28(6):626-31. doi: 10.1002/gps.3869. Epub 2012 Aug 28.

Reference Type BACKGROUND
PMID: 22927195 (View on PubMed)

Mack J, Rabins P, Anderson K, Goldstein S, Grill S, Hirsch ES, Lehmann S, Little JT, Margolis RL, Palanci J, Pontone G, Weiss H, Williams JR, Marsh L. Prevalence of psychotic symptoms in a community-based Parkinson disease sample. Am J Geriatr Psychiatry. 2012 Feb;20(2):123-32. doi: 10.1097/JGP.0b013e31821f1b41.

Reference Type BACKGROUND
PMID: 21617521 (View on PubMed)

Ibarretxe-Bilbao N, Ramirez-Ruiz B, Junque C, Marti MJ, Valldeoriola F, Bargallo N, Juanes S, Tolosa E. Differential progression of brain atrophy in Parkinson's disease with and without visual hallucinations. J Neurol Neurosurg Psychiatry. 2010 Jun;81(6):650-7. doi: 10.1136/jnnp.2009.179655. Epub 2009 Dec 3.

Reference Type BACKGROUND
PMID: 19965847 (View on PubMed)

Ibarretxe-Bilbao N, Junque C, Marti MJ, Tolosa E. Cerebral basis of visual hallucinations in Parkinson's disease: structural and functional MRI studies. J Neurol Sci. 2011 Nov 15;310(1-2):79-81. doi: 10.1016/j.jns.2011.06.019. Epub 2011 Jun 25.

Reference Type BACKGROUND
PMID: 21705027 (View on PubMed)

Goldman JG, Stebbins GT, Dinh V, Bernard B, Merkitch D, deToledo-Morrell L, Goetz CG. Visuoperceptive region atrophy independent of cognitive status in patients with Parkinson's disease with hallucinations. Brain. 2014 Mar;137(Pt 3):849-59. doi: 10.1093/brain/awt360. Epub 2014 Jan 29.

Reference Type BACKGROUND
PMID: 24480486 (View on PubMed)

Lenka A, Jhunjhunwala KR, Saini J, Pal PK. Structural and functional neuroimaging in patients with Parkinson's disease and visual hallucinations: A critical review. Parkinsonism Relat Disord. 2015 Jul;21(7):683-91. doi: 10.1016/j.parkreldis.2015.04.005. Epub 2015 Apr 17.

Reference Type BACKGROUND
PMID: 25920541 (View on PubMed)

Ramirez-Ruiz B, Marti MJ, Tolosa E, Gimenez M, Bargallo N, Valldeoriola F, Junque C. Cerebral atrophy in Parkinson's disease patients with visual hallucinations. Eur J Neurol. 2007 Jul;14(7):750-6. doi: 10.1111/j.1468-1331.2007.01768.x.

Reference Type BACKGROUND
PMID: 17594330 (View on PubMed)

Goetz CG, Vaughan CL, Goldman JG, Stebbins GT. I finally see what you see: Parkinson's disease visual hallucinations captured with functional neuroimaging. Mov Disord. 2014 Jan;29(1):115-7. doi: 10.1002/mds.25554. Epub 2013 Jul 10.

Reference Type BACKGROUND
PMID: 23843193 (View on PubMed)

Stebbins GT, Goetz CG, Carrillo MC, Bangen KJ, Turner DA, Glover GH, Gabrieli JD. Altered cortical visual processing in PD with hallucinations: an fMRI study. Neurology. 2004 Oct 26;63(8):1409-16. doi: 10.1212/01.wnl.0000141853.27081.bd.

Reference Type BACKGROUND
PMID: 15505157 (View on PubMed)

Weil RS, Reeves S. Hallucinations in Parkinson's disease: new insights into mechanisms and treatments. Adv Clin Neurosci Rehabil. 2020 Jul 13;19(4):ONNS5189. doi: 10.47795/ONNS5189. eCollection 2020 Summer.

Reference Type BACKGROUND
PMID: 33102741 (View on PubMed)

O'Brien J, Taylor JP, Ballard C, Barker RA, Bradley C, Burns A, Collerton D, Dave S, Dudley R, Francis P, Gibbons A, Harris K, Lawrence V, Leroi I, McKeith I, Michaelides M, Naik C, O'Callaghan C, Olsen K, Onofrj M, Pinto R, Russell G, Swann P, Thomas A, Urwyler P, Weil RS, Ffytche D. Visual hallucinations in neurological and ophthalmological disease: pathophysiology and management. J Neurol Neurosurg Psychiatry. 2020 May;91(5):512-519. doi: 10.1136/jnnp-2019-322702. Epub 2020 Mar 25.

Reference Type BACKGROUND
PMID: 32213570 (View on PubMed)

Zhu K, van Hilten JJ, Putter H, Marinus J. Risk factors for hallucinations in Parkinson's disease: results from a large prospective cohort study. Mov Disord. 2013 Jun;28(6):755-62. doi: 10.1002/mds.25389. Epub 2013 Mar 20.

Reference Type BACKGROUND
PMID: 23520046 (View on PubMed)

Ffytche DH, Pereira JB, Ballard C, Chaudhuri KR, Weintraub D, Aarsland D. Risk factors for early psychosis in PD: insights from the Parkinson's Progression Markers Initiative. J Neurol Neurosurg Psychiatry. 2017 Apr;88(4):325-331. doi: 10.1136/jnnp-2016-314832.

Reference Type BACKGROUND
PMID: 28315846 (View on PubMed)

Muller AJ, Shine JM, Halliday GM, Lewis SJ. Visual hallucinations in Parkinson's disease: theoretical models. Mov Disord. 2014 Nov;29(13):1591-8. doi: 10.1002/mds.26004. Epub 2014 Aug 22.

Reference Type BACKGROUND
PMID: 25154807 (View on PubMed)

Schwartzman D, Maravic K, Kranczioch C, Barnes J. Altered early visual processing components in hallucination-prone individuals. Neuroreport. 2008 Jun 11;19(9):933-7. doi: 10.1097/WNR.0b013e328301a640.

Reference Type BACKGROUND
PMID: 18520996 (View on PubMed)

Archibald NK, Clarke MP, Mosimann UP, Burn DJ. The retina in Parkinson's disease. Brain. 2009 May;132(Pt 5):1128-45. doi: 10.1093/brain/awp068. Epub 2009 Mar 31.

Reference Type BACKGROUND
PMID: 19336464 (View on PubMed)

Davidsdottir S, Cronin-Golomb A, Lee A. Visual and spatial symptoms in Parkinson's disease. Vision Res. 2005 May;45(10):1285-96. doi: 10.1016/j.visres.2004.11.006. Epub 2004 Dec 16.

Reference Type BACKGROUND
PMID: 15733961 (View on PubMed)

Diederich NJ, Goetz CG, Raman R, Pappert EJ, Leurgans S, Piery V. Poor visual discrimination and visual hallucinations in Parkinson's disease. Clin Neuropharmacol. 1998 Sep-Oct;21(5):289-95.

Reference Type BACKGROUND
PMID: 9789709 (View on PubMed)

Diaz-Santos M, Monge ZA, Salazar RD, Gilmore GC, Neargarder S, Cronin-Golomb A. Increasing Contrast Improves Object Perception in Parkinson's Disease with Visual Hallucinations. Mov Disord Clin Pract. 2020 Nov 17;8(1):51-59. doi: 10.1002/mdc3.13104. eCollection 2021 Jan.

Reference Type BACKGROUND
PMID: 33426159 (View on PubMed)

Mamiya Y, Nishio Y, Watanabe H, Yokoi K, Uchiyama M, Baba T, Iizuka O, Kanno S, Kamimura N, Kazui H, Hashimoto M, Ikeda M, Takeshita C, Shimomura T, Mori E. The Pareidolia Test: A Simple Neuropsychological Test Measuring Visual Hallucination-Like Illusions. PLoS One. 2016 May 12;11(5):e0154713. doi: 10.1371/journal.pone.0154713. eCollection 2016.

Reference Type BACKGROUND
PMID: 27171377 (View on PubMed)

Uchiyama M, Nishio Y, Yokoi K, Hosokai Y, Takeda A, Mori E. Pareidolia in Parkinson's disease without dementia: A positron emission tomography study. Parkinsonism Relat Disord. 2015 Jun;21(6):603-9. doi: 10.1016/j.parkreldis.2015.03.020. Epub 2015 Mar 31.

Reference Type BACKGROUND
PMID: 25864093 (View on PubMed)

Murakami H, Shiraishi T, Umehara T, Omoto S, Takahashi M, Motegi H, Maku T, Sato T, Takatsu H, Komatsu T, Bono K, Sakai K, Mitsumura H, Iguchi Y. Face pareidolia is associated with right striatal dysfunction in drug-naive patients with Parkinson's disease. Neurol Sci. 2021 Dec;42(12):5327-5334. doi: 10.1007/s10072-021-05238-7. Epub 2021 Apr 22.

Reference Type BACKGROUND
PMID: 33884529 (View on PubMed)

Watanabe H, Nishio Y, Mamiya Y, Narita W, Iizuka O, Baba T, Takeda A, Shimomura T, Mori E. Negative mood invites psychotic false perception in dementia. PLoS One. 2018 Jun 1;13(6):e0197968. doi: 10.1371/journal.pone.0197968. eCollection 2018.

Reference Type BACKGROUND
PMID: 29856844 (View on PubMed)

Other Identifiers

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6350X

Identifier Type: -

Identifier Source: org_study_id

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