. The brain from ape to man; a contribution to the study of the evolution and development of the human brain. Brain; Evolution; Pongidae. 170 THE LOWER PRIMATES with afferent conduction. These nuclei are especially related to a type of con- duction which has to do with the maintenance of equihbriuin. They receive impulses from the receptive organs of the semicircular canals, utricle and. FIG. 83. MARMOSET. LEVEL OF THE \'ESTIBULAR NUCLEI AND TUBERCULUM ACUSTICUM. CTT, Central Tegmental Tract; dt, Deiterso-spinal Tract; cow, Ventral Spinocerebellar Tract; icp, Inferior Cerebellar Peduncle; lo.
. The brain from ape to man; a contribution to the study of the evolution and development of the human brain. Brain; Evolution; Pongidae. 170 THE LOWER PRIMATES with afferent conduction. These nuclei are especially related to a type of con- duction which has to do with the maintenance of equihbriuin. They receive impulses from the receptive organs of the semicircular canals, utricle and. FIG. 83. MARMOSET. LEVEL OF THE \'ESTIBULAR NUCLEI AND TUBERCULUM ACUSTICUM. CTT, Central Tegmental Tract; dt, Deiterso-spinal Tract; cow, Ventral Spinocerebellar Tract; icp, Inferior Cerebellar Peduncle; lo. Inferior Olive; mf. Mesial Fillet; nd, Deiters' Nucleus; nr, Nucleus of Rolando; NSC, Nucleus of Schwalbe; n8. Auditory Nerve; pd, Predorsal Bundle; pl, Posterior Longitudinal Fasciculus; FY, Pyramid; ref, Reticular Formation; rst, Rubrospinal Tract; spt. Spinothalamic Tract; trd. Descending Trigeminal Tract; tub, Tuberculum Acusticum. [Accession No. 146. Section 67. Actual Size 10X4 mm.] saccule. The two nuclei which have thus replaced the columns t)f Goll and Burdach are the nucleus triangularis of Schwalbe ( NSc) and the nucleus magnoccllularis of Deiters (ND). The size of these nuclei and their fiber connections with the vestibular mechanism indicates a high degree of organi- zation in the reflex acts connected with balancing. These vestibular nuclei are outstanding features in the section. In their general dimensions they cor- respond with the similar structures of lemur, a fact which would seem to justify the inlerence that the marmosets are as well equipped in balancing. 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
