Cited by 131Dementia and Cognitive Impairment ResearchNeurological disorders and treatmentsParkinson's Disease Mechanisms and Treatments

Beyond and below the cortex: The contribution of striatal dysfunction to cognition and behaviour in neurodegeneration

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O'Callaghan, C., Bertoux, M., Hornberger, M.·2014·Journal of Neurology, Neurosurgery & Psychiatry

Abstract

Investigations of cognitive and behavioural changes in neurodegeneration have been mostly focussed on how cortical changes can explain these symptoms. In the proposed review, we will argue that the striatum has been overlooked as a critical nexus in understanding the generation of such symptoms. Although the striatum is historically more associated with motor dysfunction, there is increasing evidence from functional neuroimaging studies in the healthy that striatal regions modulate behaviour and cognition. This should not be surprising, as the striatum has strong anatomical connections to many cortical regions including the frontal, temporal and insula lobes, as well as some subcortical regions (amygdala, hippocampus). To date, however, it is largely unclear to what extent striatal regions are affected in many neurodegenerative conditions-and if so, how striatal dysfunction can potentially influence cognition and behaviour. The proposed review will examine the existing evidence of striatal changes across selected neurodegenerative conditions (Parkinson's disease, progressive supranuclear palsy, Huntington's disease, motor neuron disease, frontotemporal dementia and Alzheimer's disease), and will document their link with the cognitive and behavioural impairments observed. Thus, by reviewing the varying degrees of cortical and striatal changes in these conditions, we can start outlining the contributions of the striatal nexus to cognitive and behavioural symptoms. In turn, this knowledge will inform future studies investigating corticostriatal networks and also diagnostic strategies, disease management and future therapeutics of neurodegenerative conditions.

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  1. Aarsland D, Brønnick K, Larsen JP, et al. Cognitive impairment in incident, untreated Parkinson disease. Neurology 2009;72:1121-6.
  2. Aylward EH, Codori AM, Rosenblatt A, et al. Rate of caudate atrophy in presymptomatic and symptomatic stages of Huntington's disease. Mov Disord 2000;15:552-60.

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Authors
O'Callaghan, C., Bertoux, M., & Hornberger, M.
Affiliations
  • Sorbonne Université (FR)
  • UNSW Sydney (AU)
Corresponding author
Hornberger, M.
Venue
Journal of Neurology, Neurosurgery & Psychiatry
Publisher
BMJ
Published
2013-07-06
Volume
85
Issue
4
Pages
371-378
ISSN
0022-3050 (ISSN-L)
OpenAlex
W2168561180
Cited by
131
References
105
Citations by year
2026: 4 · 2025: 17 · 2024: 11 · 2023: 6 · 2022: 10 · 2021: 17 · 2020: 7 · 2019: 4 · 2018: 15 · 2017: 13 · 2016: 9 · 2015: 9 · 2014: 6 · 2013: 2
FWCI
1.18
Type
journal article
Language
en
Open access
Locations
  • Journal of Neurology Neurosurgery & Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • HighWire Press Open Archive (submittedVersion)
  • UEA Digital Repository (University of East Anglia) (submittedVersion)
Funders
Australian Research Council (DP110104202)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Neurology › Neurological disorders and treatments
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
Keywords
striatal dysfunction, neurodegeneration, cognition, behavior, corticostriatal network, Parkinson's disease, progressive supranuclear palsy, Huntington's disease, motor neuron disease, frontotemporal dementia, Alzheimer's disease, cognitive impairment, behavioural symptoms
MeSH terms
Cerebral Cortex, Cognition Disorders, Corpus Striatum, Humans, Nerve Degeneration, Neural Pathways, Neurodegenerative Diseases

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