The temporal development of neural selectivity to physical attributes of a visual stimulus,
such as its orientation and spatial frequency, can provide important clues about mechanisms
of cortical tuning. We measured the dynamics of orientation tuning in macaque primary
visual cortex (V1) and found several dynamical features in the data: changes in global
enhancement and suppression, narrowing of orientation bandwidth, small but significant
shifts in preferred orientation, and “Mexican-hat” tuning curves. The dynamics data were …

Ringach, Dario, Michael J. Hawken, and Robert Shapley. Dynamics of orientation tuning in
macaque V1: the role of global and tuned suppression. J Neurophysiol 90: 342–352, 2003.
First published February 26, 2003; 10.1152/jn. 01018.2002. The temporal development of
neural selectivity to physical attributes of a visual stimulus, such as its orientation and spatial
frequency, can provide important clues about mechanisms of cortical tuning. We measured
the dynamics of orientation tuning in macaque primary visual cortex (V1) and found several …