Anterior insula degeneration in frontotemporal dementiaReport as inadecuate

Anterior insula degeneration in frontotemporal dementia - Download this document for free, or read online. Document in PDF available to download.

Brain Structure and Function

, Volume 214, Issue 5–6, pp 465–475

First Online: 29 May 2010Received: 15 January 2010Accepted: 21 April 2010


The human anterior insula is anatomically and functionally heterogeneous, containing key nodes within distributed speech–language and viscero-autonomic-social–emotional networks. The frontotemporal dementias selectively target these large-scale systems, leading to at least three distinct clinical syndromes. Examining these disorders, researchers have begun to dissect functions which rely on specific insular nodes and networks. In the behavioral variant of frontotemporal dementia, early-stage frontoinsular degeneration begets progressive -Salience Network- breakdown that leaves patients unable to model the emotional impact of their own actions or inactions. Ongoing studies seek to clarify local microcircuit- and cellular-level factors that confer selective frontoinsular vulnerability. The search for frontotemporal dementia treatments will depend on a rich understanding of insular biology and could help clarify specialized human language, social, and emotional functions.

KeywordsFrontotemporal dementia Insula Anterior cingulate fMRI von Economo neuron AbbreviationsACCAnterior cingulate cortex

FTDFrontotemporal dementia

FTLDFrontotemporal lobar degeneration

FTLD-TDPFTLD with TAR DNA-binding protein of 43 kDa inclusions

FTLD-FUSFTLD with fused in sarcoma inclusions

PNFAProgressive nonfluent aphasia

VENvon Economo neuron

Download fulltext PDF

Author: William W. Seeley


Related documents