Journal
FRONTIERS IN AGING NEUROSCIENCE
Volume 7, Issue -, Pages -Publisher
FRONTIERS RESEARCH FOUNDATION
DOI: 10.3389/fnagi.2015.00121
Keywords
cerebellum; behavioral variant frontotemporal dementia; cognition; neuropsychiatric processes; neural correlates
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Funding
- National Health and Medical research Council of Australia (NHMRC) [1037746]
- Australian Research Council Centre of Excellence in Cognition [CE110001021]
- Motor Neuron Disease Research Institute of Australia (MNDRIA)
- NHMRC [630434]
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Although converging evidence has positioned the human cerebellum as an important relay for intact cognitive and neuropsychiatric processing, changes in this large structure remain mostly overlooked in behavioral variant frontotemporal dementia (byFTD), a disease which is characterized by cognitive and neuropsychiatric deficits. The present study assessed whether degeneration in specific cerebellar subregions associate with indices of cognition and neuropsychiatric performance in byFTD. Our results demonstrate a relationship between cognitive and neuropsychiatric decline across various domains of memory, language, emotion, executive, visuospatial function, and motivation and the degree of gray matter degeneration in cerebellar lobules V VII. Most notably, bilateral cerebellar lobule VII and the posterior vermis emerged as distinct for memory processes, the right cerebellar hemisphere underpinned emotion, and the posterior vermis was highlighted in language dysfunction in byFTD. Based on cortico-cerebellar connectivity maps, these findings in the cerebellum are consistent with the neural connections with the cortices involved in these domains in patients with byFTD. Overall, the present study underscores the significance of cortical-cerebellar networks associated with cognition and neuropsychiatric dysfunction in byFTD.
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