Results 31 to 40 of about 234,528 (304)

Affecting long-term fear memory formation through optical control of Rac1 GTPase and PAK activity in lateral amygdala

open access: yesScientific Reports, 2017
Fear conditioning, a behavioral model for studying fear-related disorders, is believed to be formed by alterations of synaptic efficacy mediated by changes in synaptic transmission and neuronal morphology in lateral amygdala (LA).
Aniruddha Das   +3 more
doaj   +1 more source

Natural amyloid-β oligomers acutely impair the formation of a contextual fear memory in mice.

open access: yesPLoS ONE, 2012
Memory loss is one of the hallmark symptoms of Alzheimer's disease (AD). It has been proposed that soluble amyloid-beta (Abeta) oligomers acutely impair neuronal function and thereby memory.
Kara A Kittelberger   +3 more
doaj   +1 more source

mGluR5 in amygdala modulates fear memory generalization

open access: yesFrontiers in Behavioral Neuroscience, 2023
IntroductionFear memory generalization is regarded as the core characteristic of posttraumatic stress disorder (PTSD) development. However, the mechanism that contributes to the generalization of conditioned fear memory is still unclear.
Shou-Min Xuan   +11 more
doaj   +1 more source

Post-training Activation of Rac1 in the Basolateral Amygdala Is Required for the Formation of both Short-term and Long-term Auditory Fear Memory

open access: yesFrontiers in Molecular Neuroscience, 2015
Rac1, a member of the Rho family of small GTPases, is crucial for morphological changes of the mature neuronal synapse including spine formation and activity-dependent spine enlargement, while its role in the formation of associated memories, such as ...
Qinqin eGao   +8 more
doaj   +1 more source

Sexually divergent expression of active and passive conditioned fear responses in rats

open access: yeseLife, 2015
Traditional rodent models of Pavlovian fear conditioning assess the strength of learning by quantifying freezing responses. However, sole reliance on this measure includes the de facto assumption that any locomotor activity reflects an absence of fear ...
Tina M Gruene   +4 more
doaj   +1 more source

Role of TRPC6 in conditioning and extinction of contextual fear memory in mice

open access: yesDi-san junyi daxue xuebao, 2020
Objective To explore the role of transient receptor potential canonical 6 (TRPC6) on conditioning and extinction in contextual fear memory. Methods A total of 32 male C57BL/6J mice (6~8 weeks old) were randomized into fear conditioning (Cond group, n=16)
TIAN Yiqin   +4 more
doaj   +1 more source

NR2A- and NR2B-containing NMDA Receptors in the Prelimbic Medial Prefrontal Cortex Differentially Mediate Trace, Delay, and Contextual Fear Conditioning [PDF]

open access: yes, 2013
Activation of N-methyl-D-aspartate receptors (NMDAR) in the prelimbic medial prefrontal cortex (PL mPFC) is necessary for the acquisition of both trace and contextual fear memories, but it is not known how specific NR2 subunits support each association ...
Gilmartin, Marieke R.   +2 more
core   +2 more sources

Fear Conditioning Assay in Mouse

open access: yesBio-Protocol, 2013
The study of fear memory is important for understanding various anxiety disorders in which patients experience persistent recollections of traumatic events.
Melissa Wang, Isabel Muzzio
doaj   +1 more source

Not all stressors are equal : behavioral and endocrine evidence for development of contextual fear conditioning after a single session of footshocks but not of immobilization [PDF]

open access: yes, 2012
Exposure of animals to footshocks (FS) in absence of any specific cue results in the development of fear to the compartment where shocks were given (contextual fear conditioning), and this is usually evaluated by time spent freezing.
Armario, Antonio   +3 more
core   +2 more sources

Putting fear in its place: remapping of hippocampal place cells during fear conditioning [PDF]

open access: yes, 2004
We recorded hippocampal place cells in two spatial environments: a training environment in which rats underwent fear conditioning and a neutral control environment.
Blair, HT   +4 more
core   +1 more source

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