The encoding of category-specific versus nonspecific information in human inferior temporal cortex

NeuroImage
Bingbing Guo, Ming Meng

Abstract

Several brain areas in the inferior temporal (IT) cortex, such as the fusiform face area (FFA) and parahippocampal place area (PPA), are hypothesized to be selectively responsive to a particular category of visual objects. However, how category-specific and nonspecific information may be encoded at this level of visual processing is still unclear. Using fMRI, we compared averaged BOLD activity as well as multi-voxel activation patterns in the FFA and PPA corresponding to high-contrast and low-contrast face and house images. The averaged BOLD activity in the FFA and PPA was modulated by the image contrast regardless of the stimulus category. Interestingly, unlike the univariate averaged BOLD activity, multi-voxel activation patterns in the FFA and PPA were barely affected by variations in stimulus contrast. In both the FFA and PPA, decoding the categorical information about whether participants saw faces or houses was independent of stimulus contrast. Moreover, the multivariate pattern analysis (MVPA) results were highly stable when either the voxels that were more sensitive to stimulus contrast or the voxels that were less sensitive were used. Taken together, these findings demonstrate that both category-specific (face versus h...Continue Reading

References

Jan 1, 1991·Cerebral Cortex·D J Felleman, D C Van Essen
Jan 1, 1972·Journal of Neurophysiology·C G GrossD B Bender
Jul 1, 1982·Journal of Neurophysiology·D G Albrecht, D B Hamilton
Jan 1, 1980·Cognitive Psychology·A M Treisman, G Gelade
Jun 1, 1994·Journal of Neurophysiology·P M GochinC G Gross
Jan 1, 1997·Spatial Vision·D H Brainard
Aug 29, 1997·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·I Biederman, P Kalocsai
Apr 29, 1998·Nature·R Epstein, Nancy Kanwisher
May 29, 2000·Trends in Cognitive Sciences·James V HaxbyM I Gobbini
Jun 22, 2000·Nature Neuroscience·David J HeegerD G Albrecht
Jul 21, 2000·Nature Neuroscience·James J DiCarlo, J H Maunsell
Jul 13, 2001·Nature·N K LogothetisA Oeltermann
Aug 31, 2001·Nature Neuroscience·Peter A Bandettini, L G Ungerleider
Feb 12, 2002·Nature Reviews. Neuroscience·David J Heeger, David Ress
Nov 12, 2002·Nature Neuroscience·Anitha Pasupathy, Charles E Connor
Aug 20, 2003·Nature Neuroscience·Doris Y TsaoRoger B H Tootell
Jan 31, 2004·Vision Research·Cheryl A OlmanDaniel Kersten
Apr 30, 2005·Proceedings of the National Academy of Sciences of the United States of America·Mark A PinskSabine Kastner
Nov 8, 2005·Science·Chou P HungJames J DiCarlo
Feb 4, 2006·Science·Doris Y TsaoMargaret S Livingstone
Jun 7, 2006·Current Biology : CB·Yukiyasu Kamitani, Frank Tong
Jun 9, 2006·Nature Reviews. Neuroscience·Bruno B AverbeckAlexandre Pouget
Jun 23, 2006·Nature Reviews. Neuroscience·John-Dylan Haynes, Geraint Rees
Jan 20, 2009·Social Cognitive and Affective Neuroscience·Marieke MurNikolaus Kriegeskorte
Feb 3, 2009·Neuroinformatics·Michael HankeStefan Pollmann
Aug 12, 2009·Nature Neuroscience·Winrich A FreiwaldMargaret S Livingstone
Nov 17, 2009·Nature Neuroscience·Marlene R Cohen, John H R Maunsell
Apr 9, 2010·Cerebral Cortex·Xiaomin YueRoger B H Tootell
May 21, 2010·Proceedings of the National Academy of Sciences of the United States of America·Nancy Kanwisher
Aug 10, 2010·NeuroImage·Thomas NaselarisJack L Gallant
Sep 2, 2010·Behavior Research Methods·Verena WillenbockelJames W Tanaka
Jun 2, 2011·Proceedings of the National Academy of Sciences of the United States of America·Adrian NestorMarlene Behrmann
Sep 29, 2011·Annual Review of Psychology·Frank Tong, Michael S Pratte
Apr 24, 2013·Trends in Cognitive Sciences·Marlene Behrmann, David C Plaut
Jul 17, 2013·Cognitive, Affective & Behavioral Neuroscience·Marc N Coutanche
May 9, 2014·Proceedings of the National Academy of Sciences of the United States of America·Daniel L K YaminsJames J DiCarlo

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