. The brain from ape to man; a contribution to the study of the evolution and development of the human brain. Brain; Evolution; Pongidae. 178 THE LOWER PRIMATES in the cerebral cortex of the occipital lobe, it is probably true also that the superior coliicukis maintains its primordial arrangement in the interest of certain primitive and immediate rellex reactions in response to visual FIG. »». MARMOSET. LEVEL OF THE SUPERIOR COLLICULUS. CEN, Central Gray Matter; cp. Cerebral Peduncle; crx, Central Tegmental Tract; mf, Mesial Fillet; mob. Mesial Geniculate Body; noc, Oculomotor Nucleus
. The brain from ape to man; a contribution to the study of the evolution and development of the human brain. Brain; Evolution; Pongidae. 178 THE LOWER PRIMATES in the cerebral cortex of the occipital lobe, it is probably true also that the superior coliicukis maintains its primordial arrangement in the interest of certain primitive and immediate rellex reactions in response to visual FIG. »». MARMOSET. LEVEL OF THE SUPERIOR COLLICULUS. CEN, Central Gray Matter; cp. Cerebral Peduncle; crx, Central Tegmental Tract; mf, Mesial Fillet; mob. Mesial Geniculate Body; noc, Oculomotor Nucleus; nru. Nucleus Ruber; N3, Oculomotor Nerve; pd, Predorsal Bundle; pl, Posterior Longitudinal Fasciculus; ref, Reticular Formation; sbn. Substantia Nigra; sc, Superior Colliculus; spt. Spinothalamic Tract. [Accession No. 146. Section 167. Actual Size 10X6 mm.] In this particular, the case is similar to that of the inferior colliculus which has apparently retained much of its primordial auditory function. The neces- sity for quick, decisive motor responses as a reaction to visual stimuh on the part of the marmoset must be obvious. Most of the animal's reactions to visual stimulation resuh in very rapid movements of the head, eyes, neck and Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Tilney, Frederick, 1875-1938; Riley, Henry Alsop, 1887-. New York, P. B. Hoeber, inc.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbrain, booksubjectevo
