Question

With regards to the visual system pathway, information goes from the optic nerve to the _______ and then to the primary visual cortex (V1). “Blobs” in the primary visual cortex (V1) receive information about ___ from the koniocellular cells in this thalamic nucleus. If a visual stimulus resulted in a large amount of sodium (Na+) entering the “blob” neuron, that neuron would be ____ and would be more likely to fire an action potential.

A) Lateral Geniculate Nucleus (LGN); color; depolarized

B) Paraventricular Nucleus (PVN); lines in a particular orientation; hyperpolarized

C) Paraventricular Nucleus (PVN); color; hyperpolarized

D) Lateral Geniculate Nucleus (LGN); lines in a particular orientation; depolarized

Answer 1

Option A is correct. Information from optic nerve goes to lateral geniculate nucleus. Blobs are the section of visual cortex that are sensitive to colour. Na+ entering causes depolarisation.