If you observe a stationary scene while gently moving the eye with one's fingertip what does it result in Perceived motion that supports Helmholtz's efferent copy theory
What can a directionally selective motion detector be constructed from?
A direction ally selective motion detector can be constructed from; two spatially separated receptive fields converging on a detector neuron with a time delay.
von Helmholtz:
He argued that the brain needed to create an efference copy for the motor commands that controlled eye muscles so as to aid the brain's determining the location of an object relative to the head. His argument used the experiment in which one gently presses on one's own eye.
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