Results 221 to 230 of about 4,981,199 (268)

Predictive sequence learning in the hippocampal formation

Neuron, 2022
SummaryThe hippocampus receives sequences of sensory inputs from the cortex during exploration and encodes the sequences with millisecond precision. We developed a predictive autoencoder model of the hippocampus including the trisynaptic and monosynaptic circuits from the entorhinal cortex (EC).
Yusi Chen, Huanqiu Zhang, Mia Cameron, Terrrence Sejnowski   +3 more
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Directional tuning in the hippocampal formation of birds

Current Biology, 2021
Birds strongly rely on spatial memory and navigation. Therefore, it is of utmost interest to reveal how space is represented in the avian brain. Here we used tetrodes to record neurons from the hippocampal formation of Japanese quails-a ground-dwelling species-while the quails roamed in an open-field arena.
Ben-Yishay, E. ; https://orcid.org/0000-0003-3698-6345, Krivoruchko, K., Ron, S., Ulanovsky, N., Derdikman, D., Gutfreund, Y.   +5 more
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Microvascular anatomy of the hippocampal formation

Surgical Neurology, 1992
The hippocampal vessels were examined in 25 forebrain hemispheres injected with india ink or methylmethacrylate. There were two to seven hippocampal arteries, which measured 200-800 microns in diameter. The anterior hippocampal artery (AHA), which was present in 88.2% of the hemispheres, most often originated from the posterior cerebral and the ...
Slobodan Marinković, Laslo Puskas, Milan Milisavljević   +2 more
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Anatomy of the Avian Hippocampal Formation

Reviews in the Neurosciences, 2006
Increasing knowledge of the avian hippocampal formation (hippocampus and parahippocampal area) suggests that it plays a role in a variety of behaviors, such as homing, cache retrieving, visual discrimination, imprinting, and sexual behavior. Knowledge of the neural circuits in the hippocampal formation and its related areas or nuclei is important for ...
Wild Jm, Yasuro Atoji
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Fractal anatomy of the hippocampal formation

Surgical and Radiologic Anatomy, 2018
We believed that the hippocampal complex is a fractal, and we try to demonstrate it.We selected 12 magnetic resonance (MR) studies from healthy brains. Five women and 7 men without neurological or psychiatric disease were analyzed. The age range was 50-71 years old, with a mean 57.1 ± 7.6 years.
Guillermo Axayacalt Gutierrez Aceves, Miguel Angel Celis López, Mario Alonso Vanegas, Oscar Rene Marrufo Meléndez, Sergio Moreno Jiménez, Julio Cesar Pérez Cruz, Roberto Díaz Peregrino, Alberto González Aguilar, José Alfredo Herrera González   +8 more
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Neuroplasticity in the Hippocampal Formation

1978
Publisher Summary This chapter presents the evidences indicating that the neural circuitries of the rat hippocampal formation possess remarkable capacities for both functional and structural changes. It discusses anatomical and physiological features of the hippocampus with an emphasis on the unique advantages possessed by this structure for the ...
Thomas V. Dunwiddie, Gary Lynch, Christine M. Gall   +2 more
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Hippocampal theta rhythm: Intra-hippocampal formation contributions

Brain Research, 1974
Abstract The intra-hippocampal organization of theta rhythm was examined in chronically implanted rats. Small lesions were placed in the posterior aspects of the hippocampal formation and the subsequent effect of the lesion ascertained electrophysiologically. Lesions of the subiculum significantly diminished the amount of theta rhythm present and the
Jerald J. Bernstein, Jerald J. Bernstein, Steven F. Zornetzer, Steven F. Zornetzer, R. B. Chronister, R. B. Chronister, L.E. White, L.E. White   +7 more
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ARTERIAL SUPPLY TO THE HIPPOCAMPAL FORMATION

Neuroimaging Clinics of North America, 1997
Arterial supply of hippocampal formation in humans has been studied by many investigators in the past. More recently, investigation of correlation of complex partial seizure with mesial temporal sclerosis has brought a resurgence of interest in studying the hippocampus. This article discusses arterial architecture of the hippocampal formation.
Y P, Huang, T, Okudera
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Interlamellar transfer of impulses in the hippocampal formation

Experimental Neurology, 1983
Functional relations between hippocampal lamellae, the modular units arranged in parallel in the hippocampal formation, were studied in the guinea pig in experiments of evoked field potential analysis. Perforant path volleys, synaptically elicited by stimulation of the dorsal hippocampal commissure, were used to activate the basic three-neuron lamellar
Sperti L, Renata Bartesaghi, Gessi T
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Golgi study on cat hippocampal formation [PDF]

Anatomy and Embryology, 1978
The Golgi architecture of the Fascia dentata and hippocampus is described in the cat. The main cell types are like those found in other species. The initial collaterals of granule cell axons were demonstrated and are commented on. The interneurons proved to be of several types and subtypes not observed in lower species.
Gy. Somogyi, F. Hajdu, Teréz Tömböl
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