In Blakemore and Cooper’s (1970) study on the impact of early visual experience, which of the following best describes the neurophysiological findings obtained from single-cell recordings in the kittens' visual cortex?
There were large, inactive 'silent' areas of the cortex where neurones tuned to the unexperienced orientation had completely degenerated.
The vast majority of neurones showed preferences close to the experienced orientation, with an absence of neurones responding to the perpendicular orientation, and no 'silent' cortical regions.
The distribution of orientation-selective neurones was entirely normal, indicating that the visual deficits observed were due to developmental damage in the retina.
Neurones only responded to the experienced orientation when the kittens were tested binocularly, reverting to a normal orientation distribution during monocular testing.
