. Brains of rats and men; a survey of the origin and biological significance of the cerebral cortex. Cerebral cortex; Rats -- Behavior; Psychology, Comparative; Brain -- physiology; Psychology, Comparative; Cerebral Cortex. fs erh. ^ 'â -. fs. rh. drc. Fig. 32.âLateral view of the brain of Orolestes inca, enlarged about four times. After Obenchain (1925), The olfactory bulb {) is very large. The small cerebellum shows a large lobus medius {lob. m. cb.) bounded behind by the fissura secunda {fs. s.). The cerebral cortex shows two fissures. The orbital fissure {fs. orb.) cuts across
. Brains of rats and men; a survey of the origin and biological significance of the cerebral cortex. Cerebral cortex; Rats -- Behavior; Psychology, Comparative; Brain -- physiology; Psychology, Comparative; Cerebral Cortex. fs erh. ^ 'â -. fs. rh. drc. Fig. 32.âLateral view of the brain of Orolestes inca, enlarged about four times. After Obenchain (1925), The olfactory bulb {) is very large. The small cerebellum shows a large lobus medius {lob. m. cb.) bounded behind by the fissura secunda {fs. s.). The cerebral cortex shows two fissures. The orbital fissure {fs. orb.) cuts across the excitable motor field, and the rhinic fissure {fs. rh.) separates the neopallium above from the pyriform lobe {lob. pir.) below. The latter is separated from the amygdala by a shallow amygdaloid fissure {fs. amg.). The olfactory tu- bercle {tub. ol.) is a subcortical reflex center, separated from the cortex by the large lateral olfactory tract {tr. ol. lat.), which in turn is bounded above by the fissura endorhinalis {/s. erh.) and below by the fissura rhinalis arcuata {fs. rh. arc).. Fig. 2Z-âMedian section of the brain of Orolestes. After Obenchain. The very small neopallial cortex extends over upon the medial aspect as far as the hippocampal fissure {fis. hip.), below which is hippocampal cor- tex {hip. ant.). Still farther ventrally are the septum, or parolfactory area {a. parol.)^ the olfactory tubercle {tub. ol.), dorsal or pallial commissure {d), ventral or anterior commissure (y), massa intermedia of the thalamus {m. i.), and farther back the tectum {tect.), or roof of the midbra-in. The optic chiasma is at 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 Herrick, C. Judson (Charles Judson), 1868-1960. Chicago, Ill. , The University of Chicago press
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