Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published December 1997 | public
Journal Article Open

Maps of complex motion selectivity in the superior temporal cortex of the alert macaque monkey: a double-label 2-deoxyglucose study

Abstract

The superior temporal sulcus (STS) of the macaque monkey contains multiple visual areas. Many neurons within these regions respond selectively to motion direction and to more complex motion patterns, such as expansion, contraction and rotation. Single-unit recording and optical recording studies in MT/MST suggest that cells with similar tuning properties are clustered into columns extending through multiple cortical layers. In this study, we used a double-label 2-deoxyglucose technique in awake, behaving macaque monkeys to clarify this functional organization. This technique allowed us to label, in a single animal, two populations of neurons responding to two different visual stimuli. In one monkey we compared expansion with contraction; in a second monkey we compared expansion with clockwise rotation. Within the STS we found a patchy arrangement of cortical columns with alternating stimulus selectivity: columns of neurons preferring expansion versus contraction were more widely separated than those selective for expansion versus rotation. This mosaic of interdigitating columns on the floor and posterior bank of the STS included area MT and some neighboring regions of cortex, perhaps including area MST.

Additional Information

Copyright © 1997 by Oxford University Press. Reprinted with permission. The authors would like to thank Gail Robertson for excellent technical assistance and Ning Qian for a discussion of the local phase algorithm. This project was support by NIH grants RO1 EY07492 (R.A.A.), RO1 EY11379 (R.T.B.) and RO1 EY07980 (R.B.H.T.), and the Human Frontiers Science Program (R.A.A. and R.B.H.T.).

Files

GEEcecor97.pdf
Files (645.7 kB)
Name Size Download all
md5:becdb34e2a7dbe6e44fb9a6850a99694
645.7 kB Preview Download

Additional details

Created:
September 13, 2023
Modified:
October 23, 2023