6. All except the following are true sstatements about Organization of the Prima

Question

6. All except the following are true sstatements about Organization of the Primary Visual Cortex. A hypercolumn is a collection of orientation columns that encode all possible orientations in the same part of visual space. Any line falling on a particular part of the retina will stimulate all the cells in all the columns of the hypercolumn. Each successive column of an orientation column has a preferred orientation, slightly advanced, by degree of angle, from the column before it. The amount of space in the visual cortex taken up by bits of information sent to it from the fovea is considerably larger than the space given for information sent from more peripheral regions of the retina. Receptor fields of particular orientation are near each other and cells a little distance away all share a slightly different and preferred orientation. a. b. c. d. 7. Which among the following statements is false? a. Each of the more than 30 areas in the extrastriate region is specialized for a particular aspect of vision, such as form perception and color perception, and does not participate in any way with areas outside its own specialization. There are many backwards connections from the etrastriate regions into the primary visual cortex The extrastriate region includes mre than 30 visual areas in the cortex beyond VI l involved in some aspect of visual perception. The inferior temporal (IT) area of the brain is activated by faces. b. c· d. 8. Which among the following staements is false a. The LGN sends information to V1 from each eye separately b, VI with 70% of its cells being binocular, begins to put information coming from the two eyes together The information coming from ocular dominance columns in the LGN are again arranged in ocular dominance columns in Vl The cells in V1 initially receiving information from the LGN, are monocular c· d. 9. Trigger features, or specific stimuli needed to elicit responses in cells, become more complicated the further back we go in the visual system. In which of the following, does the location in the visual system not accurately match with the stimulus or trigger feature(s stated? a· Lateral Geniculate Nucleus cells stimulated by lines and edges b. VI cells stimulated by lines of particular orientation, particular length, direction of motion, speed, distance and color c. V3 stimulated by faces d. retinal cells in the eye stimulated by spots of light 10. Newborn babies (just minutes old) prefer to look at patterns most resembling a human face, more than any other stimuli. Why? a. Humans are hardwired -bor with cells oriented to faces. . These patterns are more interesting than others. c. All the above accurately answer the question d. Since they were able to hear and remember the voices of their mothers and fathers in utero, they imagined a face along with the voices.

Explanation / Answer

Question 6-

Third Option ‘c’ is not true for the question. It is true in case of vice versa. The peripheral region has more space because after closing of eyes information of the sight remains in the brain.

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