Results 191 to 200 of about 4,790,351 (243)

The distribution of acetylcholinesterase in the hippocampal formation of the monkey

Journal of Comparative Neurology, 1984
AbstractIn order to study the distribution of acetylcholinesterase (AChE) in the primate hippocampal formation, we have stained serial sections through the brains of nine macaque monkeys for AChE by two variants of the Koelle acetyl‐thiocholine method.
I. Bakst, David G. Amaral
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Subcortical afferents to the hippocampal formation in the monkey

Journal of Comparative Neurology, 1980
AbstractThe distribution of neurons in the basal telencephalon, the diencephalon, and the brainstem that project to the hippocampal formation has been analyzed in mature cynomolgus monkeys (Macaca fascicularis) by the injection of horseradish peroxidase into different rostro‐caudal levels of the hippocampal formation.
W. M. Cowan, David G. Amaral
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Acetylcholine Sensitivity of Hippocampal Formation Neurons

Canadian Journal of Physiology and Pharmacology, 1974
Microiontophoretic application of acetylcholine to neurons in the CA1 pyramidal and dentate granule layers of the rabbit hippocampus revealed differences both in the number of cells excited and the nature of the excitation in the two populations of neurons. A smaller percentage (35.7%) of CA1 pyramidal neurons were found to be excited by acetylcholine,
Brian H. Bland, George K. Kostopoulos, J.W. Phillis   +2 more
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The primate hippocampal formation: evidence for a time-limited role in memory storage.

Science, 1990
Clinical and experimental studies have shown that the hippocampal formation and related structures in the medial temporal lobe are important for learning and memory.
S. Zola-Morgan, L. Squire
semanticscholar   +1 more source

Efferent connections of the hippocampal formation in the rat

Brain Research, 1977
In this investigation the projections of the hippocampal formation to the septal area and hypothalamus were studied in the rat with the combined use of 3H-amino acid radioautography and horseradish peroxidase histochemistry. The results indicate that all of the fibers which project to the hypothalamus and the majority of fibers which project to the ...
Allan Siegel, Richard C. Meibach
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The commissural connections of the monkey hippocampal formation

Journal of Comparative Neurology, 1984
AbstractThe commissural connections of the hippocampal formation have been analyzed in the monkey (Macaca fascicularis) using both anterograde and retrograde labeling techniques. We have observed a number of striking differences between the organization of the commissural projections in the monkey and that observed in the rodent brain.
David G. Amaral, Ricardo Insausti, W. M. Cowan   +2 more
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The avian hippocampal formation: subdivisions and connectivity

Behavioural Brain Research, 1999
The avian hippocampal formation (HP) is considered to be homologous to the mammalian hippocampus on the basis of topography, developmental origin and its role in processing spatial memory. However, the morphological organization of the avian HP is very different from that of mammals and components similar to the subdivisions of the mammalian structure ...
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Thalamic projections to the hippocampal formation in the cat

Neuroscience Letters, 1985
The thalamo-hippocampal projections in the cat were studied by anterograde and retrograde tracing methods. Injections of horseradish peroxidase (HRP) into the hippocampus and dentate gyrus led to retrograde labeling of cells in the nucleus reuniens of the ipsilateral thalamus throughout almost its entire anteroposterior extent.
Kahee Niimi, Mamoru Yanagihara, Katsuhiko Ono   +2 more
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Feed-forward inhibition in the hippocampal formation

Progress in Neurobiology, 1984
An overview of the current literature reveals a richness and complexity of anatomical, pharmacological and physiological features of the input systems to the archicortex. Evidence is cited to demonstrate that several afferent paths terminate on and directly excite hippocampal formation interneurons ("non-principal" cells) besides their contacts with ...
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Neuromorphic VLSI realization of the hippocampal formation

Neural Networks, 2016
The medial entorhinal cortex grid cells, aided by the subicular head direction cells, are thought to provide a matrix which is utilized by the hippocampal place cells for calculation of position of an animal during spatial navigation. The place cells are thought to function as an internal GPS for the brain and provide a spatiotemporal stamp on episodic
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