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The neuropsychological profiles and semantic-critical regions of right semantic dementia.

Abstract：

Introduction:Previous literature has revealed that the anterior temporal lobe (ATL) is the semantic hub of left-sided or mixed semantic dementia (SD), whilst the semantic hub of right-sided SD has not been examined. Methods:Seventeen patients with right-sided SD, 18 patients with left-sided SD and 20 normal controls (NC) underwent neuropsychological assessments and magnetic resonance imaging scans. We investigated the relationship between the degree of cerebral atrophy in the whole brain and the severity of semantic deficits in left and right-sided SD samples, respectively. Results:We found the semantic deficits of right-sided SD patients were related to bilateral fusiform gyri and left temporal pole, whilst the left fusiform gyrus correlated with the semantic performance of left-sided SD patients. Moreover, all the findings couldn't be accounted for by total gray matter volume (GMV) or general cognitive degradation of patients. Discussion:These results provide novel evidence for the current semantic theory, that the important regions for semantic processing include both anterior and posterior temporal lobes.

journal_name

Neuroimage Clin

journal_title

NeuroImage. Clinical

authors

Chen K,Ding J,Lin B,Huang L,Tang L,Bi Y,Han Z,Lv Y,Guo Q

doi

10.1016/j.nicl.2018.05.035

subject

Has Abstract

pub_date

2018-05-29 00:00:00

pages

767-774

issn

2213-1582

pii

S2213-1582(18)30181-5

journal_volume

19

pub_type

杂志文章

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