When Monkeys Were Reared Such That One Eye Was Kept

Multiple Choice

When monkeys were reared such that one eye was kept closed, and the other was only able to see vertical bars, this response was observed in cortical neurons.

A) The only recorded response was to vertical bars presented to the previously-open eye. No neurons responded to horizontal bars, and no neurons responded to any stimulation of the previously-closed eye.
B) Responses were observed to presentations of both horizontal and vertical bars. Similar numbers of neurons responded to the presentations of these stimuli to each eye.
C) When horizontal bars were tested, similar numbers of neurons responded to input from each of the two eyes. When vertical bars were tested, most neurons responded only to stimulation of the previously-open eye.
D) No responses were recorded to presentations of horizontal bars. Similar numbers of neurons responded to presentations of vertical bars to each eye.
E) When horizontal bars were tested, most neurons responded to binocular input. When vertical bars were tested, the only recorded responses were to stimulation of the previously-open eye.