Haxby J. V., Gobbini , M. I., Furey, M. L., Ishai, A., Schouten, J. L., & Pietrini, P. (2001). Distributed and overlapping representations of faces and objects in ventral temporal cortex. Science , 293, 2425-2430. Chiou Yao Ching ( 邱耀慶） 17 October 2005. Preface.
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Haxby J. V., Gobbini , M. I., Furey, M. L., Ishai, A., Schouten, J. L., & Pietrini, P. (2001).
Distributed and overlapping representations of faces and objects in ventral temporal cortex.
Science, 293, 2425-2430.
Chiou Yao Ching (邱耀慶）
17 October 2005
The authors of this research article prepresent
fMRI data indicating that the representations of
faces and objects in ventral temporal cortex are
widely distributed and overlapping.
Cells response best to particular shapes.
Cells response best to faces at 0o.
Before training: No activation in novices’ FFA at all.
After training: Experts engaged their FFA in the Greeble recognition.
Each category elicit a distint response pattern is also evident in cortex that responses maximally to other categories.
A indice of “Correct Identification.”
( namely, 96% CORRwithin is larger than CORRbetween.)
The Results: Part 2 categories: A fMRI study
(i.e., CORRwithin derived from A’ compares to CORRbetween derived from A’ & B’)
Category identification based on patterns of nonmaximal reponses is still high.
(namely, CORRwithinof Ais larger than
CORRbetweenof A&B and CORRbetweenof A&C even in the “D area.” )
Even within nonmaximal-response regions, correct identification can be accomplished.
( namely, CORR照線of 臉is clearly larger than CORR線臉&屋照 and CORR線臉&椅照 . )
but how to deal with the flaws of RBC?
small response is as important as large ones for specifying details of a perceived face.
this finding answers that why a restricted lesion in FFA can lead to impairments for recognizing other kinds of object categories.
Danke sch low-level features?ön!