The convergence of rods on ganglion cells
| | a.  increases visual resolution |
| | b.  improves color vision |
| | c.  creates a blind spot on the retina |
| | d.  increases visual acuity |
Hubel and Weisel (1963) recorded from individual neurons fromvisual cortex. They found that neurons in primary visual cortex
| | a. responded selectively to elementary features of visualstimuli |
| | b. responded selectively to geons but not to differentcolors |
| | c. did not respond selectively to any visual stimuli. |
Desimone, et al (1984) presented macaque monkeys with stimulithat included bananas, black snakes, toilet brushes, and faces, andrecorded from individual neurons from visual-temporal cortex. Theresults showed that
| | a. neurons responded to all of these stimuli in the sameway. |
| | b. neurons responded selectively to face stimuli. |
| | c. neurons responded selectively to the snake stimuli. |
| | d. neurons responded selectively to the faces and the toiletbrush stimuli. |
I keep talking about “neurons responding selectively†to things.What does it mean for a neuron to “respond selectively�
| | a. The neuron fires when it wants to, no matter what thestimulus is. |
| | b. The firing rate increases and decreases randomly. |
| | c. The neuron fires more when a stimulus is presented andsignificantly less when the stimulus is not presented. |
