Results 291 to 300 of about 249,413 (328)
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Predictive sequence learning in the hippocampal formation
Neuron, 2022SummaryThe 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 +3 more
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Hippocampal theta rhythm: Intra-hippocampal formation contributions
Brain Research, 1974Abstract 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
R B, Chronister +3 more
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2015
The hippocampal formation and parahippocampal region are prominent components of the rat nervous system and play a crucial role in learning, memory, and spatial navigation. Many new details regarding the entorhinal cortex have been discovered since the previous edition, and the growing interest in the area of CA2 has been covered in this chapter ...
Cappaert, N.L.M. +2 more
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The hippocampal formation and parahippocampal region are prominent components of the rat nervous system and play a crucial role in learning, memory, and spatial navigation. Many new details regarding the entorhinal cortex have been discovered since the previous edition, and the growing interest in the area of CA2 has been covered in this chapter ...
Cappaert, N.L.M. +2 more
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The Hippocampal Formation in Schizophrenia
American Journal of Psychiatry, 2010The hippocampal formation is one of the most extensively studied regions of the brain, with well-described anatomy and basic physiology; moreover, aspects of human memory mediated by the hippocampus are well characterized. In schizophrenia, alterations in hippocampal anatomy, perfusion, and activation are consistently reported; impairments in ...
Carol A, Tamminga +2 more
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ARTERIAL SUPPLY TO THE HIPPOCAMPAL FORMATION
Neuroimaging Clinics of North America, 1997Arterial 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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Anatomy of the Hippocampal Formation
2014The hippocampus is one of several brain regions that together comprise the hippocampal formation. The hippocampal formation is a prominent C-shaped structure bulging in the floor of the temporal horn of the lateral ventricle. The hippocampus proper consists of three major subfields (CA1-CA3).
Christian, Schultz, Maren, Engelhardt
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Fractal anatomy of the hippocampal formation
Surgical and Radiologic Anatomy, 2018We 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 +8 more
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Neuroplasticity in the Hippocampal Formation
1978Publisher 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 ...
G, Lynch, C, Gall, T V, Dunwiddie
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Acetylcholine Sensitivity of Hippocampal Formation Neurons
Canadian Journal of Physiology and Pharmacology, 1974Microiontophoretic 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,
B H, Bland +2 more
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Microvascular anatomy of the hippocampal formation
Surgical Neurology, 1992The 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 ...
S, Marinković +2 more
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