Open AccessfMRI study comparing names versus pictures of objects
Author(s) -
Sevostianov Andrei,
Horwitz Barry,
Nechaev Vladimir,
Williams Rihana,
Fromm Stephen,
Braun Allen R.
Publication year - 2002
Publication title -
human brain mapping
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.005
H-Index - 191
eISSN - 1097-0193
pISSN - 1065-9471
DOI - 10.1002/hbm.10037
Subject(s) - psychology , temporal cortex , neural substrate , perception , cognitive psychology , object (grammar) , schematic , middle temporal gyrus , artificial intelligence , neuroscience , computer science , functional magnetic resonance imaging , cognition , electronic engineering , engineering
We performed an fMRI one‐back recognition study aimed at distinguishing the semantic versus perceptual aspects of how objects and their written forms are processed. There were three types of visually presented items: pictures (schematic drawings of objects); words identifying these objects; and a mixed condition in which pictures were interleaved with words. A semantic decision about object identity was required when pictures were interleaved with words. This condition, contrasted with the other two, invoked a larger signal in multiple areas, including frontal cortex, bilateral occipitotemporal cortex, and the right middle temporal gyrus. We propose that the left occipitotemporal and right temporal activations are indicative of the neural substrate mediating picture–word conversions, whereas the frontal activations reflect the coordinating functions of the central executive. Hum. Brain Mapping 16:168–175, 2002. Published 2002 Wiley‐Liss, Inc.