Results 21 to 30 of about 716,992 (304)

Explicit and Implicit Processes in Human Aversive Conditioning [PDF]

, 2006
The ability to adapt to a changing environment is central to an organism’s success. The process of associating two stimuli (as in associative conditioning) requires very little in the way of neural machinery.
Carter, Ronald McKell
core   +1 more source

Functional imaging of stimulus convergence in amygdalar neurons during Pavlovian fear conditioning. [PDF]

PLoS ONE, 2009
BACKGROUND:Associative conditioning is a ubiquitous form of learning throughout the animal kingdom and fear conditioning is one of the most widely researched models for studying its neurobiological basis.
Sabiha K Barot, Ain Chung, Jeansok J Kim, Ilene L Bernstein   +3 more
doaj   +1 more source

Differential activation of anatomically defined neuronal subpopulations in the amygdala during fear conditioning and extinction [PDF]

, 2009
The amygdala is a key structure of the neuronal circuitry mediating expression and extinction of conditioned fear. However, fear memories are thought to be encoded in a larger network comprising the medial prefrontal cortex (mPFC) and the ...
Senn, Verena
core   +1 more source

Conditional stimulus choices affect fear learning: Comparing fear conditioning with neutral faces and shapes or angry faces

, 2022
Past fear conditioning studies have used different types of conditional stimuli (CSs). Whether this choice affects learning outcomes in particular when neutral stimuli (e.g., neutral faces vs. shapes) are used is unclear. Data were aggregated across nine
Lipp, Ottmar V., Waters, Allison M., Luck, Camilla C., Camilla C. Luck, Waters, Allison M, Ottmar V. Lipp, Ney, Luke J., Luck, Camilla C, Allison M. Waters, Ney, Luke J, Luke J. Ney, Lipp, Ottmar   +11 more
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Beta-adrenergic receptors in the lateral nucleus of the amygdala contribute to the acquisition but not the consolidation of auditory fear conditioning

Frontiers in Behavioral Neuroscience, 2010
Beta-adrenergic receptors (βARs) have long been associated with fear disorders and with learning and memory. However, the contribution of these receptors to Pavlovian fear conditioning, a leading behavioral model for studying fear learning and ...
David E A Bush, Ellen M Caparosa, Anna Gekker, Joseph LeDoux, Joseph LeDoux   +4 more
doaj   +1 more source

Enduring neurobehavioral effects of early life trauma mediated through learning and corticosterone suppression

Frontiers in Behavioral Neuroscience, 2009
Early life trauma alters later life emotions, including fear. To better understand mediating mechanisms, we subjected pups to either predictable or unpredictable trauma, in the form of paired or unpaired odor-0.5mA shock conditioning which, during a ...
Stephanie Moriceau, Stephanie Moriceau, Stephanie Moriceau, Charlis Raineki, Charlis Raineki, Charlis Raineki, Jennifer D Holman, Jason G Holman, Regina M Sullivan, Regina M Sullivan, Regina M Sullivan, Regina M Sullivan   +11 more
doaj   +1 more source

Scopolamine and Pavlovian fear conditioning in rats: dose-effect analysis [PDF]

, 1999
Muscarinic-cholinergic antagonism produces learning and memory deficits in a wide variety of hippocampal-dependent tasks. Hippocampal lesions produce both acquisition deficits and retrograde amnesia of contextual fear (fear of the place of conditioning),
Anagnostaras, Stephan G., Maren, Stephen, Sage, Jennifer R., Goodrich, Stacy, Fanselow, Michael S.   +4 more
core   +5 more sources

Conditioning of fear and conditioning of safety in rats

Acta Neurobiologiae Experimentalis, 1995
In separate groups of rats forward and backward procedures for classical defensive conditioning were superimposed on on-going bar pressing for food. The forward conditioned stimulus elicited suppression of bar presses, indicating acquisition of fear. The backward stimulus paired with identical shock elicited behaviour typical for rats in a condition of
G, Walasek, M, Wesierska, K, Zieliński
openaire   +2 more sources

Learning and nicotine interact to increase CREB phosphorylation at the jnk1 promoter in the hippocampus [PDF]

, 2012
Nicotine is known to enhance long-term hippocampus dependent learning and memory in both rodents and humans via its activity at nicotinic acetylcholinergic receptors (nAChRs).
Rachel L Poole, Gould, Thomas J., Michael D Adoff, Gould Thomas J., Kenney, Justin W., Thomas J Gould, Poole Rachel L., Poole, Rachel L., Logue, Sheree F., Kenney Justin W., Justin W Kenney, Sheree F Logue, Logue Sheree F., Adoff, Michael D., Adoff Michael D.   +14 more
core   +1 more source

Nicotine and extinction of fear conditioning [PDF]

Neuroscience, 2010
Despite known health risks, nicotine use remains high, especially in populations diagnosed with mental illnesses, including anxiety disorders and Post-Traumatic Stress Disorder (PTSD). Smoking in these populations may relate to the effects of nicotine on emotional memories.
G A, Elias, D, Gulick, D S, Wilkinson, T J, Gould   +3 more
openaire   +2 more sources