Results 21 to 30 of about 50,736 (309)

Explicit and Implicit Processes in Human Aversive Conditioning [PDF]

open access: yes, 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

Beta-adrenergic receptors in the lateral nucleus of the amygdala contribute to the acquisition but not the consolidation of auditory fear conditioning

open access: yesFrontiers 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   +4 more
doaj   +1 more source

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

open access: yesPLoS 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   +3 more
doaj   +1 more source

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

open access: yes, 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.   +11 more
core   +1 more source

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

open access: yesFrontiers 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   +11 more
doaj   +1 more source

Dissecting the role of defined neuronal populations in fear learning [PDF]

open access: yes, 2014
The astonishing plasticity of the brain and its ability for continuous learning and memory formation are among its most essential functions, since constant adaptation to the environment is critical for an animal’s survival.
Eggert Wolff, Steffen Benjamin
core   +1 more source

Conditioning of fear and conditioning of safety in rats

open access: yesActa 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

Nicotine and extinction of fear conditioning [PDF]

open access: yesNeuroscience, 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   +3 more
openaire   +2 more sources

Fear conditioning and the basolateral amygdala [PDF]

open access: yesF1000Research, 2020
Fear is a response to impending threat that prepares a subject to make appropriate defensive responses, whether to freeze, fight, or flee to safety. The neural circuits that underpin how subjects learn about cues that signal threat, and make defensive responses, have been studied using Pavlovian fear conditioning in laboratory rodents as well as humans.
Yajie Sun, Helen Gooch, Pankaj Sah
openaire   +3 more sources

The psychophysiology of posttraumatic stress disorder and panic disorder : fear conditioning, autonomous underpinnings and issues of measurement [PDF]

open access: yes, 2007
Die Ergründung des Phänomens Angst in seinen gesunden und pathologischen Ausprägungen stellt für Forscher und Kliniker auch nach Jahrzehnten intensiver Forschung immer noch eine Herausforderung dar. Angst ist eine adaptive und verhaltenssteuernde Emotion,
Blechert, Jens
core   +1 more source

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