In humans, the optic nerves from the two eyes follow what pathway?
a. They go directly to the ipsilateral hemisphere, without contacting each other.
b. They go directly to the contralateral hemisphere, without contacting each other.
c. Half of the axons from each eye cross to the other side at the optic chiasm.
d. They combine to send identical information to each hemisphere.
A single visual pattern is presented under two conditions. Under one condition, the
viewer is conscious of it, and under the other, the viewer is not. How does the activity
differ in the brain, if at all?
a. Conscious activity is in the cortex. Unconscious activity is in subcortical areas.
b. Activity is more intense and spreads more widely during conscious perception.
c. Conscious activity is in the left hemisphere. Unconscious is in the right hemisphere.
d. The brain activity is the same in both cases.