[Abstract Title]. - Society for Neuroscience

Additionally, the degree of adaptation was dependent on the relation between the positions of the
adapter and the test stimulus: we found more response reduction when a stimulus at the worst
position (i.e. where the response to the adapter was lowest) was repeated compared to when the
test stimulus at the worst position followed the adapter at the best position (i.e. where the
response to the adapter was highest). These results were found both for the spiking activity as for
the power in the gamma band (60-100Hz). These results suggest that adaptation depends on the
relation between the positions of the adapter and test stimulus in a similar way as it does on the
relation between shape features of the first and second stimulus.
Disclosures: W. De Baene , None; R. Vogels, None.
Poster
261. Object and Faces: Neuronal Representation I
Time: Sunday, November 16, 2008, 1:00 pm - 5:00 pm
Program#/Poster#: 261.8/CC5
Topic: D.04.j. Processing of objects and faces
Support: Human Frontiers Science Program
NIH-NCRR
McKnight Foundation
Whitehall Foundation
Title: Stimulus duration and stimulus content interact in neural responses to images in
inferotemporal cortex during the classification of visual stimuli by macaque monkeys
Authors: Y. LIU, *B. JAGADEESH;
Physiol & Biophysics Dept., Univ. Washington, Seattle, WA
Abstract: Responses of inferotemporal neurons, which underlie object vision, change
dynamically during the static presentation of a photographic image. The changing dynamics of
this processing suggest that visual stimulus perception depends on both the content and duration
of a visual image, and that short duration stimuli might produce qualitatively different perceptual
experiences of the stimulus compared to long duration stimuli. To test this hypothesis we
recorded behavior and neural responses in rhesus macaques while monkeys performed a
classification task in which both the content of the image and the duration of the image were
manipulated. Image durations were chosen from a range of durations near threshold performance