Blockade of Neural Input from the Retina by Tetrodotoxin (TTX)

Multiple Choice

Blockade of neural input from the retina by tetrodotoxin (TTX) has this developmental effect.

A) It prevents the formation of the pinwheel patterning in orientation columns.
B) It releases inhibition of neurons that terminate in layer 4 of the visual cortex.
C) It leads to excessive "pruning" or dearborization of LGN neurons.
D) It prevents appropriate structuring and segregation of LGN layers.
E) It has no effect on visual development.