A neural basis for category and modality specificity of semantic knowledge

S Thompson-Schill
1999 Neuropsychologia  
Prevalent theories hold that semantic memory is organized by sensorimotor modality "e[g[\ visual knowledge\ motor knowledge#[ While some neuroimaging studies support this idea\ it cannot account for the category speci_c "e[g[\ living things# knowledge impairments seen in some brain damaged patients that cut across modalities[ In this article we test an alternative model of how damage to interactive\ modality!speci_c neural regions might give rise to these categorical impairments[ Functional MRI
more » ... was used to examine a cortical area with a known modality!speci_c function during the retrieval of visual and non!visual knowledge about living and non!living things[ The speci_c predictions of our model regarding the signal observed in this area were con_rmed\ supporting the notion that semantic memory is functionally segregated into anatomically discrete\ but highly interactive\ modality! speci_c regions[ Þ 0888 Published by Elsevier Science Ltd[ All rights reserved[ Keywords] Fusiform gyrus^FMRI^Imagery^Semantic memory^Visual association cortex^Neuroimaging Corresponding author[ Tel[] ¦0 104 503!0865^fax] ¦0 104 238!
doi:10.1016/s0028-3932(98)00126-2 pmid:10390028 fatcat:p74cnix5vzbmhc27m5bjhxwerq