Certain functional and anatomical relations of the cornu Ammonis of the macaque monkey. I. Functional relations

Votaw, Charles L.

doi:10.1002/cne.901120120

Cited by 59 publications

(9 citation statements)

References 64 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: 71%

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: 71%

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

Siegel

Tassoni²

1971

Brain Behav Evol

118

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“…Nauta (1962) also demonstrated in the monkey that numerous fibers from this thalamic nucleus project through the internal capsule to the caudal orbitofrontal gyrus. Votaw (1959) found that stimulation of the hippocampus in monkeys resulted in face and body movements. There is also electrophysiological evidence of amygdalocortical connections.…”

Section: Discussionmentioning

confidence: 99%

“…There is also anatomical, electrophysiological, and behavioral evidence that the hippocampus can influence ipsilateral cortical activity through an efferent system not involving the fornix. Votaw (1959) found that stimulation of the hippocampus in monkeys resulted in face and body movements. These movements were not eliminated by fornix section but subsided when Ammon's horn was separated from the subiculum, thus indicating the existence of hippocampal efferents through the temporal cortex.…”

Section: Discussionmentioning

confidence: 99%

A Comparison of EEG Seizure Patterns Recorded with Surface and Depth Electrodes in Patients with Temporal Lobe Epilepsy

et al. 1976

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Surface and depth EEG seizure patterns were compared in 34 patients with intractable temporal lobe epilepsy in whom depth EEG electrodes had been chronically implanted in order to localize epileptogenic sites with a view to surgery. EEG records accompanied by clinical seizures, auras, no behavioral changes, as well as records for which no behavioral observations had been made, were judged with respect to the manner in which seizure activity originating unilaterally in the depth of one of the temporal lobes spread to the surface. For each EEG record, the onset of seizure activity in depth was classified as being focal or regional in form, and seizure activity was judged as: (1) not spreading to the surface, (2) spreading bilaterally and synchronously to the surface, (3) spreading initially to the surface ipsilateral to the depth site(s) in which the electrographic seizure first appeared, or (4) spreading initially to the surface contralateral to the depth site(s) in which the seizure activity initially occurred. EEG seizure activity was found to be less likely to propagate to the surface for those records that were either unaccompanied by behavior changes or accompanied only by auras than for those records accompanied by clinical seizures. In records accompanied by clinical seizures, seizure activity commonly propagated to the surface in a bilateral and synchronous fashion and was also found to spread initially to the ipsilateral but not to the contralateral surface. Anatomical and electrophysiological data accounting for the occurrence of ipsilateral spread were discussed. Diagnostic usefulness of surface recordings during clinical seizures in temporal lobe epilepsy was discussed.

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“…Manipulation of the hippocampus EEG by means of electrical stimula tion (34,49,84,85,215,216,218,219) does not result in behavioral changes that are consistent with the changes induced in the EEG. The behavioral effects appear to be rather dependent upon the site of stimulation and upon stimulation parameters.…”

Section: Th E Effects 0/ Drugs and Electrical Stim Ulation Upon Hippomentioning

confidence: 54%

Physiology of the Hippocampus and Related Structures

Silva¹,

Arnolds²

1978

Annu. Rev. Physiol.

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INTRODUCTION +1190Despite the large number of studies on all aspects of the hippocampus, the function of this structure is still an enigma. In our view multidisciplinary studies of input-output relations integrated with behavioral analytical inves tigations hold the greatest promise for a solution to this problem. Therefore, this review is dedicated to the basic physiology of the hippocampus seen as a group of input-output subsystems.The first several sections deal with the functional anatomy and electro physiology. This subject receives more intensive treatment in those sections where recent anatomical data obtained with tracer techniques have pro vided signifi cant advances. In the second half of the review, hippocampal behavior correlates are dealt with. The insight of the authors into these aspects is here given precedence over a detailed review of the extensive literature. The treatment of transmitters and pharmacological aspects is omitted here in view of the recent comprehensive review of . Several reviews of the physiology of the hippocampus have been published. A classic is that of Brodal (39). The last physiological review is that of Green (86). Since then there have appeare d reviews on the phar macology of the electrical activity of the hippocampus (196); on the physi ology of cellular processes (189); and on behavioral correlates of hippocam pal function (4, 63, 1l3, 141). The comprehensive book of Isaacson (103) gives a survey of the limbic system. A collection of papers on several aspects of hippocampal structure and physiology, its relation to behavior, its devel opment and neuroendocrinology has been edited recently by Isaacson & Pribram (104). A book covering the Russian literature on the hippocampus has also appeared (76). 185 0066-4278/78/0301-0185$0 1.00 Annu. Rev. Physiol. 1978.40:185-216. Downloaded from www.annualreviews.org Access provided by University of British Columbia on 11/25/14. For personal use only.

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Certain functional and anatomical relations of the cornu Ammonis of the macaque monkey. I. Functional relations

Cited by 59 publications

References 64 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

A Comparison of EEG Seizure Patterns Recorded with Surface and Depth Electrodes in Patients with Temporal Lobe Epilepsy

Physiology of the Hippocampus and Related Structures

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