This subproject is one of many research subprojects utilizing theresources provided by a Center grant funded by NIH/NCRR. The subproject andinvestigator (PI) may have received primary funding from another NIH source,and thus could be represented in other CRISP entries. The institution listed isfor the Center, which is not necessarily the institution for the investigator.One of the most amazing and poorly understood functions of the human brain is its ability to recognize thousands of objects and faces in a variety of lighting, orientation and occlusion conditions, while even the most cutting-edge computer recognition systems have trouble identifying a face that is slightly tilted. This crucial skill depends on the multi-stage, ventral 'shape processing' pathway that runs from area V1 to V2 to V4 and finally to the inferotemporal (IT) cortex. Insights into stimulus representation in early visual areas have come since the time of Hubel & Wiesel (1959). Little, however, is known about how shape is represented in higher level areas and how this representation underlies invariant recognition and guides complex behavior. Research in my laboratory investigates how visual stimuli are represented in an intermediate visual area V4 and how representations in this visual area underlie complex behaviors such as navigating through dense foliage, recognizing faces, interpreting facial expressions, etc.
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