Certain functional and anatomical relations of the cornu ammonis of the macaque monkey. II. Anatomical relations

Votaw, Charles L.

doi:10.1002/cne.901140306

Cited by 56 publications

(13 citation statements)

References 28 publications

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“…Lesions in the lateral septal nucleus produced degeneration in all layers of the pyriform cortex where as degeneration produced from lesions of the ventral hippocampus was restricted to the deepest layer of pyriform cortex. The latter observation, coupled with the results of Votaw [1959Votaw [ , 1960, suggests the presence of a real pathway from the ventral hippocampus to the pyriform cortex.…”

Section: Discussionmentioning

confidence: 67%

“…From previous anatomical and physiological experiments [Johnson, 1965;Nauta, 1956Nauta, , 1958Powell and Cowan, 1955;Raisman, Cowan, and Powell, 1966;Siegel and Flynn, 1968;Valenstein and Nauta, 1959;Votaw, 1960] it is reasonable to conclude that var ious regions of the hippocampus could modulate hypothalamic response mechanisms directly. The present experiment also demonstrates direct connections from dorsal and ventral hippocampus to the lateral hypo thalamus and, thus, would seemingly support this view.…”

Section: Discussionmentioning

confidence: 99%

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Differential Efferent Projections from the Ventral and Dorsal Hippocampus of the Cat

Siegel

Tassoni²

1971

Brain Behav Evol

118

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An experiment was performed in order to determine the efferent projections of the ventral hippocampus and to compare its projection system with that of the dorsal hippocampus in the cat.Lesions were placed stereotaxically in either dorsal or ventral hippocampus in 25 cats. Animals were sacrificed after post-operative survival periods of 4 to 8 days. The Fink-Heimer and Nauta-Gygax techniques were used to trace degenerating axons and their terminals from ventral and dorsal hippocampus.The results demonstrated: (1) a differential distribution of fibers from the ventral and dorsal hippocampus to the septum; i.e., ventral hippocampal fibers terminate in massive numbers throughout the entire extent of the lateral septum and nucleus accumbens; dorsal hippocampal fibers terminate in lesser amounts in the medial septal nucleus; fibers from the posterior crus of the ventral hippocampus project to the midlateral septum; (2) both dorsal and ventral hippocampal fibers project similarly to the diagonal band of Broca, anterior ventral nucleus of thalamus, lateral hypothalamus, and mammillary bodies. The rostral half of the lateral hypothalamus receives fibers principally of ventral hippocampal origin whereas the posterior half of the lateral hypothalamus and mammillary bodies receive fibers of dorsal hippocampal origin; (3) the paraventricular nucleus of the hypothalamus, posterior hypothalamic nucleus, and nucleus of Darkshewitsch receive a few fibers solely from the dorsal hippocampus; (4) a second efferent pathway from the ventral hippocampus was traced from the alveus to pyriform cortex.

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Section: Discussionmentioning

confidence: 67%

Section: Discussionmentioning

confidence: 99%

Differential Efferent Projections from the Ventral and Dorsal Hippocampus of the Cat

Siegel

Tassoni²

1971

Brain Behav Evol

118

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“…He thought that the rhythmic activity of the hippocampus was a reflexion of the complex circuitry which appeared to be necessary for selecting certain movement patterns from a large number of possibilities. Votaw (1959) considered that movements elicited by electrical stimulation of the primate hippocampus had features of an arousal reaction representing an emotional response. However, relatively strong stimulus parameters were used in his experiments.…”

Section: De8cending8y8temmentioning

confidence: 99%

Functional relationships between the hippocampus and the cerebellum: an electrophysiological study of the cat.

Newman¹,

Reza²

1979

The Journal of Physiology

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SUMMARY1. Functional interrelationships between the hippocampus and the cerebellum have been investigated in the anaesthetized cat. Plots of the stimulating and recording sites as well as the latency range of the responses indicated the extent of ascending and descending lines of operation between these two structures.2. Stimulation of the fastigial nucleus evoked the discharge of single hippocampal units on both sides of the brain. Early responses had a mean latency of 12 msec and late responses had a mean latency of 21 msec. Increasing the intensity of the stimulus had little effect on the patterns of discharge.3. There was no topographical organization within the hippocampus. On the other hand, the activity evoked by a cutaneous stimulus was shown to be greatly depressed by a preceding cerebellar stimulus, particularly at intervals 30-40 msec between the two stimuli.4. Cerebellar responses evoked by stimulating the hippocampus were found mainly in lobule VI of the posterior lobe. Early and late responses were frequently recorded in the same trace, ipsilateral stimulation yielding the shortest latencies. Increasing the intensity of the stimulus increased the likelihood of there being a response and increased the number of spikes in each discharge. Hippocampal stimulation also had a profound influence on resting cerebellar discharges.5. Symmetrical points in the two hippocampi were chosen for conditioning and testing sequences. The conditioning stimulus had a long-lasting inhibitory effect on the test response followed by a slow recovery.6. The location and extent of hippocampal influences on the cerebellum were determined by plotting the presence or absence of a response at each stimulated site. The results indicated the existence of bilateral descending projections containing fast and slow components in conformity with the known conduction properties of mossy fibre and climbing fibre inputs.7. The physiological significance of interrelationship between the hippocampus and the cerebellum is discussed. It seems that there are many similarities as well as fundamental differences in the cerebellar control of movement under normal circumstances and in conditions of stress.

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“…WE should like to thank the following scientists for permission to use material from their publications: P. Andersen Allen 1944Simpson 1952Sprague and Meyer 1950 McLardy 1955bPowell and Cowan 1955Guillery 1956Nauta 1956Powell et al 1957 Nauta 1958Johnson 1959Valenstein and Nauta 1959Votaw 1960aPowell 1963Votaw and Lauer 1963a Johnson 1965Raisman et al 1966Raisman 1969 Van Buren 1970De France et al 1971Hjorth-Simonsen 1971Siegel and Tassoni 1971aPepeu et al 1973Segal and Landis 1974Siegel et al 1974Meibach and Siegel 1975Swanson and Cowan 1975a,b * Flynn and Wassman 1960Akert and Gernandt 1962Feldman 1962 Parmeggiani 1962 Cazard and Buser 1963Fox et al 1967Gergen 1967 Parmeggiani 1967Redding 1967Yamaguchi et al 1967Sierra and Fuster 1968Vanegas and Flynn 1968Yokota and MacLean 1968 Parmeggiana and Rapisarda 1969 Redding 1969Ungher et al 1969Kerr and Dennis 1970Poletti et al 1970 Golden and Lobar 1971Grillo 1971Kaada et al 1971 Bland and Vanderwolf 1972b, De France et al 1972Grantyn et al 1972McKenzie and Gilbert 1972Andersen et al 1973…”

Section: Acknowledgementsmentioning

confidence: 99%

The Hippocampus as a Cognitive Map

Routtenberg¹,

O’Keefe²,

Nadel³

1980

The American Journal of Psychology

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Certain functional and anatomical relations of the cornu ammonis of the macaque monkey. II. Anatomical relations

Cited by 56 publications

References 28 publications

Differential Efferent Projections from the Ventral and Dorsal Hippocampus of the Cat

Differential Efferent Projections from the Ventral and Dorsal Hippocampus of the Cat

Functional relationships between the hippocampus and the cerebellum: an electrophysiological study of the cat.

The Hippocampus as a Cognitive Map

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