Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Dementia01:30

Dementia

184
Dementia is a collective term for cognitive disorders primarily affecting memory, thinking, and reasoning. It is not a specific disease but a syndrome, with Alzheimer's disease being the most common cause, accounting for approximately 60-80% of cases. Other types include vascular dementia, Lewy body dementia, and frontotemporal dementia. Dementia affects millions worldwide, particularly older adults, though it is not a normal part of aging.
The progression of dementia is generally gradual....
184

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Hearing Loss and Modifiable Dementia Risk Factors in Adults Aged 50 Years or Older Living in Tasmania, Australia.

Australasian journal on ageing·2026
Same author

Risk and protective factors for cognitive decline in older adults from a nationally representative sample in India: Results from the LASI-DAD.

Alzheimer's & dementia : the journal of the Alzheimer's Association·2026
Same author

Efficacy of Adjunct PRObiotics as Compared to the Standard Care in Moderate Unipolar Depression Among Geriatric Patients: A Randomized Double-Blind Placebo-Controlled Pilot Multi-Center Trial (PRODG).

Journal of the American Geriatrics Society·2026
Same author

Development and validation of revised battery for ECT-related cognitive deficits (B4ECT ReCoDe).

Asian journal of psychiatry·2026
Same author

Authors' reply- Sarcopenia and its Cognitive Consequences: Insights from an Urban Indian Cohort.

Annals of Indian Academy of Neurology·2026
Same author

A functional MRI and magnetoencephalography study of the cognitive modulatory effect of transcranial direct current stimulation in early Alzheimer's disease.

Frontiers in human neuroscience·2026

Related Experiment Video

Updated: Sep 24, 2025

Using Retinal Imaging to Study Dementia
09:17

Using Retinal Imaging to Study Dementia

Published on: November 6, 2017

21.8K

Reflected image processing abnormalities in dementia - a case series and review.

Thomas Gregor Issac1, Shiv Shanker Reddy Mukku1, Sandhya Mangalore2

  • 1Geriatric Psychiatry Unit, Department of Psychiatry, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore, India.

Neurocase
|May 9, 2022
PubMed
Summary

Mirror phenomena, including mirror agnosia and mirror image agnosia, are observed in dementia. Recognizing these visual processing issues aids in early diagnosis and subtype identification of neurodegenerative conditions.

Keywords:
Alzheimer’s dementia (AD)Frontotemporal dementia (FTD)face processingmirror agnosiamirror image agnosiamirror image processing

More Related Videos

Abbiategrasso Brain Bank Protocol for Collecting, Processing and Characterizing Aging Brains
12:28

Abbiategrasso Brain Bank Protocol for Collecting, Processing and Characterizing Aging Brains

Published on: June 3, 2020

17.6K
In Vivo Dynamics of Retinal Microglial Activation During Neurodegeneration: Confocal Ophthalmoscopic Imaging and Cell Morphometry in Mouse Glaucoma
12:48

In Vivo Dynamics of Retinal Microglial Activation During Neurodegeneration: Confocal Ophthalmoscopic Imaging and Cell Morphometry in Mouse Glaucoma

Published on: May 11, 2015

10.7K

Related Experiment Videos

Last Updated: Sep 24, 2025

Using Retinal Imaging to Study Dementia
09:17

Using Retinal Imaging to Study Dementia

Published on: November 6, 2017

21.8K
Abbiategrasso Brain Bank Protocol for Collecting, Processing and Characterizing Aging Brains
12:28

Abbiategrasso Brain Bank Protocol for Collecting, Processing and Characterizing Aging Brains

Published on: June 3, 2020

17.6K
In Vivo Dynamics of Retinal Microglial Activation During Neurodegeneration: Confocal Ophthalmoscopic Imaging and Cell Morphometry in Mouse Glaucoma
12:48

In Vivo Dynamics of Retinal Microglial Activation During Neurodegeneration: Confocal Ophthalmoscopic Imaging and Cell Morphometry in Mouse Glaucoma

Published on: May 11, 2015

10.7K

Area of Science:

  • Neuroscience
  • Gerontology
  • Cognitive Psychology

Background:

  • Dementia is a progressive neurodegenerative condition affecting cognitive functions.
  • Mirror phenomena, such as mirror agnosia and mirror image agnosia, involve difficulties processing reflected images.
  • These phenomena are not uncommon in dementia and can offer diagnostic insights.

Observation:

  • Two elderly women with dementia presented with abnormalities in mirror image processing.
  • One patient had Alzheimer's dementia with both mirror agnosia and mirror image agnosia.
  • The other patient had frontotemporal dementia with predominant mirror image agnosia and preoccupation with her reflection.

Findings:

  • The study highlights the presence of mirror agnosia and mirror image agnosia in dementia patients.
  • These symptoms can manifest differently depending on the type of dementia (Alzheimer's vs. frontotemporal).
  • The neuroanatomical basis of these phenomena is key to dementia subtyping.

Implications:

  • Identifying mirror phenomena can assist in the early identification and subtyping of dementia.
  • Differentiating these from psychotic symptoms is vital for appropriate treatment.
  • Non-pharmacological interventions may be more beneficial than psychotropics for these specific symptoms.