Abstract

The spatial and the temporal tuning characteristics of cells in the pigeon optic tectum to drifting sine-wave gratings were analysed quantitatively. Most cells could be identified as having temporal frequency tuning curves with shallow cut to both low and high temporal frequencies. The results indicate that the cells' spatial frequency selectivity to moving sine-wave gratings is independent of the temporal modulation of the stimulus. All the cells but one were tuned to velocity rather than to temporal frequency.

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