Hippocampal modulation of learning

effects of theta-contingent training trials in rabbit classical conditioning by Matthew A Seager

Written in English
Published: Pages: 43 Downloads: 739
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Subjects:

  • Learning -- Psychology,
  • Classical conditioning,
  • Hippocampus (Brain)

Edition Notes

Statementby Matthew A. Seager
The Physical Object
Paginationvi, 43 leaves :
Number of Pages43
ID Numbers
Open LibraryOL15267631M

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Wallenstein, Gene V. and Michael E. Hasselmo. GABAergic scenario typically continued across theta cycles until the full semodulation of hippocampal population activity: sequence learning, place field development, and the phase precession effect. J. Neuroquence was ?doi= Serotonin Deficiency Increases Context-Dependent Fear Learning Through Modulation of Hippocampal Activity Jonas Waider, 1, * Sandy Popp, 1 Boris Mlinar, 2 Alberto Montalbano, 2 Francesco Bonfiglio, 2 Benjamin Aboagye, 1 Elisabeth Thuy, 1 Raphael Kern, 1 Christopher Thiel, 1 Naozumi Araragi, 3, 4 Evgeniy Svirin, 1, 5 Angelika G Hippocampal theta-band oscillations are thought to facilitate the co-ordination of brain activity across distributed networks, including between the hippocampus and prefrontal cortex (PFC). Impairments in hippocampus-PFC functional connectivity are implicated in schizophrenia and are associated with a polymorphism within the ZNFA gene that shows a genome-wide significant association with  › Publications. Consequences for Hippocampal Output and Learning. Ultimately, any dysfunction in hippocampal encoding of context is likely reflected in changes to the primary hippocampal output neurons: CA1 PCs. Som + interneurons appear poised to inhibit excitation during the US and are required for CFC, but the response of PCs in their absence is ://

We have used the theta oscillation in our previous studies [53, 54], which were based on faster gamma-frequency oscillations [1, 57–60], spatial information [61–63], in-time locking cell activities [], and regulation of learning facilities [1, 65–67].The MS-DBB (Medial Septum-Diagonal Band of Broca) has been classically viewed as the hippocampal theta rhythm generator [57, 64, 68]. Serotonin Deficiency Increases Context-Dependent Fear Learning Through Modulation of Hippocampal Activity Jonas Waider 1*, Sandy Popp 1, Boris Mlinar 2, Alberto Montalbano 2, Francesco Bonfiglio 2, Benjamin Aboagye 1, Elisabeth Thuy 1, Raphael Kern 1, Christopher Thiel 1, Naozumi Araragi 3,4, Evgeniy Svirin 1,5, Angelika G. Schmitt   Inheritance of Hippocampal Place Fields 3. The postsynaptic output is an inhomogeneous Poisson process with intensity λout(t) = v 0 + N−1 n=0 k J n(t k n)(t −t k n), () where v 0 is the spontaneous output rate, (t) is the excitatory postsynaptic potential (EPSP), and tk n is the arrival time of the kth input spike at synapse convenience, the EPSP function is nor- MR improved the impairment of learning and memory function accompanied by selective modulation of the expression of multiple related genes, reduced plasma and hippocampal inflammatory response, normalized H 2 S levels in the hippocampus, cortex, and plasma, up-regulated the mRNA and protein expression levels of cystathionine β-synthase in the #!

Theta oscillations are believed to play an important role in the coordination of neuronal firing in the entorhinal (EC)-hippocampal system but the underlying mechanisms are not known. We simultaneously recorded from neurons in multiple regions of the EC-hippocampal loop and examined their temporal relationships. Theta-coordinated synchronous spiking of EC neuronal populations predicted the (09) Yirmiya, R. and Goshen, I. () Immune Modulation of Learning, Memory, Neural Plasticity and Neurogenesis. Brain, Behavior, and Immunity, 25, (S(jmbntvnsjt1aadkposzje))/reference/?. 1 day ago  Loss of vestibular function is known to cause spatial memory deficits and hippocampal dysfunction, in terms of impaired place cell firing and abnormal theta rhythm. Based on these results, it has been of interest to determine whether vestibular loss also affects the development and maintenance of long-term potentiation (LTP) in the ://

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These various hippocampal subregions and pathways are thought to contribute to the different aspects of learning and memory that the hippocampus supports. Thus, understanding how nicotine affects LTP and STP and induces LTP in the different subregions may yield clues as to how nicotine alters different learning and memory :// Hippocampal modulation of learning book of learning and hippocampal, neuronal plasticity by repetitive transcranial magnetic stimulation (rTMS) Zaghloul Ahmed.

Ph.D. Program in Biology, The Graduate School and University Center of NY, New York, New York, USA. Search for more papers by this author. Andrzej :// Speed modulation of hippocampal theta frequency and power predicts water maze learning Preprint (PDF Available) March with 17 Reads How we measure 'reads'   The interleukin‐1 (IL‐1) cytokine family (IL‐1α, IL‐β, and the IL‐1 receptor antagonist) is involved in immune and inflammatory responses both in the Hippocampal modulation of cingulo-thalamic neuronal activity and discriminative avoidance learning in rabbits.

Kang E(1), Gabriel M. Author information: (1)Department of Psychology, Stanford The modulation of learning and memory after left or right microinjections of the selective 5-HT1A receptor agonist 8-OH-DPAT and of the 5-HT1A receptor antagonist NAN into the hippocampal CA1 area of male Wistar rats was :// The role different hippocampal subregions play in various aspects of learning and memory and the effects of nicotine on synaptic plasticity in these regions as measured by LTP (see text for details).

a Inputs and outputs of three hippocampal subregions (DG, CA3, and CA1) and their involvement in various hippocampus-dependent learning and memory   modulation of hippocampal population activity: sequence learning, quence was recalled.

When the GABAB-receptor-mediated sup-place field development, and the phase precession effect.J. Neuro- pression of excitatory and inhibitory transmission at intrinsic fibers physiol. –, Modulation of Hippocampal Activities Modulation of activities in the hippocampus and in the ‘neural chain’ that begins at the entorhinal cortex and runs through the CA areas to the subiculum may occur through influences mediated by the diffusely projecting biogenic amine systems, afferent cholinergic influences, and both localized and   OPEN Selective Estrogen Receptor Modulation Increases Hippocampal Activity during Probabilistic Association Learning in Schizophrenia Jochen Kindler1,2,3, Cynthia Shannon Weickert1,2,4, Ashley J Skilleter1,2,4, Stanley V Catts5, Rhoshel Lenroot1,2,4 and Thomas W Weickert*,1,2,4 Hippocampal modulation of learning book of Psychiatry, University of New South Wales, Randwick, NSW, Australia; 2Neuroscience Research   In the current study, we tested if variations in speed modulation of hippocampal theta can predict spatial learning rates in the water maze.

Using multi-step regression, we find the magnitude and robustness of hippocampal theta frequency versus speed scaling can predict water maze learning :// This chapter compares the putative mechanisms by which dopamine selectively affects learning that is thought to be mediated by functionally distinct brain regions, such as the hippocampus and dorsal striatum.

First, it discusses a summary of the behavioral changes that result from alterations in normal dopamine signalling. The way in which dopamine mediates hippocampal and dorsal striatal :oso/   Nicotinic modulation of hippocampal cell signaling and associated effects on by nicotine and nAChR activation and in turn these cell-signaling cascades are responsible for nicotine's effects on hippocampal learning and plasticity.

The studies discussed here suggest that hippocampal The hippocampus book., 3 (), pp. Preprint of the book chapter published in Hippocampal Place Fields: Relevance to Learning and Memory, SJY Mizumori (ed.), Oxford University Press, Chap pp.

Spatial decisions and neuronal activity in hippocampal projection zones in pr efrontal cortex and striatum FP Battaglia 1, A Peyrache 2, M Khamassi 2,3, SI Wiener   UNCORRECTED PROOF Adenosine A 2A Receptor Modulation of Hippocampal CA3-CA1 Synapse Plasticity During Associative Learning in Behaving Mice Bruno M Fontinha1, Jose´ M Delgado-Garcı´a*,2, Noelia Madron˜al2, Joaquim A Ribeiro1, Ana M Sebastia˜o1 and Agne`s Gruart2 1Institute of Pharmacology and Neurosciences, Faculty of Medicine, Unit of Neurosciences, Institute of Molecular   hippocampal long-term potentiation (LTP), hippocampus-dependent 1-trial memory at long retention delays (>6 h) requires hippocampal D1-class receptors during learning.

Hippocampal D1-class receptors also modulate the induction and magnitude of early LTP (& Modulation of Hippocampal NCAM Polysialylation and Spatial Memory Consolidation by Fear Conditioning Carmen Sandi, Jose´ J.

Merino, M. Isabel Cordero, Nyika D. Kruyt, Keith J. Murphy, and Ciaran M. Regan Background: Cell adhesion molecule function is involved in hippocampal synaptic plasticity and associated with memory ://+and+stressfull+ If the effects of curiosity on learning were driven, at least in part, by dopaminergic modulation of hippocampal activity, it would imply a specific effect of curiosity on the late phase of LTP.

The lower bound of the timescale for late LTP is not clear, but the retention intervals tested here are potentially consistent with such a ://(14) To explore NGF modulation of hippocampal plasticity and function, NGF levels were augmented or blocked in intact adult rats, and subsequent in vivo effects on cholinergic neurons, hippocampal long-term potentiation (LTP), and learning were examined.

NGF augmentation significantly enhanced cholinergic neuronal markers and facilitated induction Stress is a biologically significant factor shown to influence synaptic plasticity and memory functioning in the hippocampus.

This study examined the role of the amygdala, a brain structure implicated in coordinating stress behaviors and modulating memory consolidation, in mediating stress effects on hippocampal long-term potentiation (LTP) and memory in :// Hippocampal Synaptic Enhancement as a Basis for Learning and Memory: A Selected Review of Current Evidence from Behaving Animals The extent to which this latter process (short-term exploratory modulation) may reflect information acquisition by the hippocampus is also discussed.

Original language Fingerprint Dive into the research topics The hippocampal lesions did not increase CR-frequency during acquisition, extinction or during reacquisition.

These results suggested a suppressive modulation by hippocampal efferents on several limbic structures and a functional independence of subiculum and :// Summary.

We studied the mechanisms of action of acetylcholine (ACh) and dopamine (DA) on hippocampal CA1 pyramidal cells of the in vitro slice preparation.

ACh caused an initial hyperpolarization in half the cells studied which was eliminated when synaptic transmission was blocked and was therefore presynaptic in :// Abstract.

Activity of hippocampal neurons is regulated by several types of receptors to neuropeptides, hormones and neurotransmitters.

14,49 Glutamate is the most prominent neurotransmitter of the fast excitatory synapses in hippocampus and other parts of the mammalian brain.

Glutamate receptors include ionotropic and metabotropic famil60 and the ionotropic ones are divided in two broad Amygdala Is Critical for Str ess-Induced Modulation of Hippocampal. Long-T erm Potentiation and Lear ning. Jeansok J. Kim, 1. Hongjoo J. Lee, 1. learning (K i m et al., ; L eDoux,   Hippocampal synaptic plasticity is believed to importantly contribute to the formation and consolidation of some types of memory.

Stimulation of noradrenergic receptors in the hippocampus alters neuronal excitability and synaptic plasticity, suggesting a key role for noradrenaline (NA) in learning In conclusion, the endogenous activation of adenosine A2A receptors plays a pivotal effect on the associative learning process and its relevant hippocampal circuits, including activity-dependent These results support a role for estrogen receptor modulation of mesial temporal lobe neural activity in the remediation of learning disabilities in both men and women with :// Cholinergic neurons densely innervate the hippocampus, mediating the formation of episodic as well as semantic memory.

Here, we will review recent findings on acetylcholine's modulation of memory function, with a particular focus on hippocampus-dependent learning, and the circuits :// Since the discovery of long-term synaptic enhancement and long-term potentiation (LTE/LTP), a substantial body of empirical support has accumulated for the theory that LTP of hippocampal synapses represents the experimental activation of processes that normally subserve distributed information storage.

Although most experiments have yielded data that tend to support this hypothesis, recently :oso//. Learning not only shapes the brain to form new memories but also affects future learning.

Previous studies show that Pavlovian contextual fear conditioning (cFC) and environmental enrichment (EE) can inhibit or facilitate further learning via shifting parvalbumin (PV) interneurons network towards a high PV or low PV state in hippocampal neural circuit, respectively (Donato et al., ).VIP Modulation of Hippocampal Synaptic Plasticity: A Role for VIP Receptors as Therapeutic Targets in Cognitive Decline and Mesial Temporal Lobe Epilepsy Front Cell Neurosci.

Jun 12; doi: /fncelSo-ochim-tang-gamibang (SOCG) is a decoction formula which has been used to improve mental activity in traditional Korean medicine. The present study was performed to evaluate whether the treatment of SOCG was involved in activating hippocampal neurons in mice which were subjected to chronic restraint stress (CRS).

Mice were subjected to CRS for 2 weeks to induce depressive-like behaviors