exam 3 review questions Flashcards
which are the only cells in the eye capable of firing AP?
ganglion cells
the eye is designed to best detect?
differences in light intensity
if you injected radioactive amino acids into the cell body of a neuron in layer 5 of the RIGHT LGN, you would expect to find the label in which layer of the striate cortex? (anterograde transport)
layer IVc- beta of right hemisphere
you are recording from a cell in the cortex that responds to color differences. what kind of cell could it be?
a blob cell
on a moonless night, one can see a dim star best with?
peripheral retina
layers 1 and 2 of your right LGN are destroyed. you would have problems seeing?
fast-moving stimuli in left visual field
when light strikes a photopigment
a second messenger system is activated that decreases levels of cGMP
T or F: cutting the right optic tract would cause loss of vision only in left eye
false - would lose left visual hemifield
which of the following is FALSE peripheral retina has... - more cones than rods - more receptor cells per ganglion cell - poor detailed vision - two of the above
more cones than rods
T or F: damage to left optic nerve would result in blindness in right visual hemifield
false - total blindness in left eye
properties of retinotopy include all of the following except..
point of light activates one ganglion cells
most nociceptors are
polymodal
which of the following would increase pain…
- inject naloxone
- stimulate raphe nuclei
- opiates
inject naloxone
the cause of phantom limb is thought to involve
a rewiring of neuronal circuitry in primary somatosensory cortex
T or F: temperature info follows the same pathway as touch
FALSE
