Cells Grouped in Orientation Columns in Newborn Monkeys
This chapter presents a paper entitled “Ordered Arrangement of Orientation Columns in Monkeys Lacking Visual Experience”. The main objective of the study was to see whether ordered sequences of orientation columns were present in very young visually naïve monkeys. Recordings were made from area 17 in two macaque monkeys whose eyes had been closed near the time of birth. The first monkey was born normally, but one day elapsed before eye closure could be done. The second was delivered by Caesarian section and the lids sutured shut immediately. The results in these two animals were very similar. In both, highly ordered sequences of orientation shifts were present, and were in no obvious way different from those seen in the adult. This indicated that the ordered column system was innately determined and not the result of early visual experience.
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