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Vision Res. 1987;27(12):2035-48.

Coding of visual stimulus velocity in area MT of the macaque.

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Psychology Department, Princeton University, NJ 08544.


We have studied the interaction of the direction and speed selectivities of neurons in cortical visual area MT of the macaque monkey. For a given cell, preferred direction and the shape of the direction tuning curve for moving edges were similar at different stimulus speeds, and deviations from the optimal speed did not systematically alter direction tuning bandwidth. Similar speed tuning was obtained for responses to motion in the preferred and anti-preferred directions even when the response to anti-preferred motion was an inhibitory one. The results are discussed in terms of the unique contributions of area MT to visual motion analysis.

[Indexed for MEDLINE]

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