Visual recognition in rhesus monkeys requires area TE but not TEO

Abstract The primate visual system is often described as a hierarchical feature-conjunction pathway, whereby each level represents an increasingly complex combination of image elements, culminating in the representation of whole coherent images in anterior inferior temporal cortex. Although many mod...

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Veröffentlicht in:Cerebral cortex (New York, N.Y. 1991) N.Y. 1991), 2023-03, Vol.33 (6), p.3098-3106
Hauptverfasser: Eldridge, Mark A G, Pearl, Jonah E, Fomani, Grace P, Masseau, Evan C, Fredericks, J Megan, Chen, Gang, Richmond, Barry J
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Sprache:eng
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Zusammenfassung:Abstract The primate visual system is often described as a hierarchical feature-conjunction pathway, whereby each level represents an increasingly complex combination of image elements, culminating in the representation of whole coherent images in anterior inferior temporal cortex. Although many models of the ventral visual stream emphasize serial feedforward processing (Poggio et al. 2012; Yamins and DiCarlo 2016) anatomical studies show connections that bypass intermediate areas and that feedback to preceding areas (Distler et al. 1993; Kravitz et al. 2011). Prior studies on visual discrimination and object transforms also provide evidence against a strictly feed-forward serial transfer of information between adjacent areas (Kikuchi and Iwai 1980; Weiskrantz and Saunders 1984; Kar and DiCarlo 2021). Thus, we sought to investigate whether behaviorally relevant propagation of visual information is as strictly sequential as sometimes supposed. We compared the accuracy of visual recognition after selective removal of specific subregions of inferior temporal cortex—area TEO, area TE, or both areas combined. Removal of TEO alone had no detectable effect on recognition memory, whereas removal of TE alone produced a large and significant impairment. Combined removal of both areas created no additional deficit relative to removal of TE alone. Thus, area TE is critical for rapid visual object recognition, and detailed image-level visual information can reach area TE via a route other than through TEO.
ISSN:1047-3211
1460-2199
DOI:10.1093/cercor/bhac263