Fear - Physiology
Research News and Information

Saturday, November 21, 2009

Factors governing single-trial contextual fear conditioning in the weanling rat.

29 Sep 2009 Although contextual fear conditioning emerges later in development than explicit-cue fear conditioning, little is known about the stimulus parameters and biological substrates required at early ages. The authors adapted methods for investigating ... Read more...

From threat to fear: the neural organization of defensive fear systems in humans.

28 Sep 2009 Postencounter and circa-strike defensive contexts represent two adaptive responses to potential and imminent danger. In the context of a predator, the postencounter reflects the initial detection of the potential threat, whereas the circa-strike is ... Read more...

Dopamine is necessary for cue-dependent fear conditioning.

7 Sep 2009 Dopamine (DA) is implicated in many behaviors, including motor function, cognition, and reward processing; however, the role of DA in fear processing remains equivocal. To examine the role of DA in fear-related learning, dopamine-deficient (DD) mice ... Read more...

Latest indexed articles for 'Fear - Physiology'

These are the very latest articles for this heading:

• Factors governing single-trial contextual fear conditioning in the weanling rat. 29 Sep 2009
• From threat to fear: the neural organization of defensive fear systems in humans. 28 Sep 2009
• Dopamine is necessary for cue-dependent fear conditioning. 7 Sep 2009
• Fear extinction across development: the involvement of the medial prefrontal cortex as assessed by temporary inactivation and immunohistochemistry. 31 Aug 2009
• A balancing act: D4 receptor activation and the neurobiological basis of emotional learning. 31 Aug 2009
• Alteration of synaptic transmission in the hippocampal-mPFC pathway during extinction trials of context-dependent fear memory in juvenile rat stress models. 30 Aug 2009
• The APP-interacting protein FE65 is required for hippocampus-dependent learning and long-term potentiation. 25 Aug 2009
• Selective activation of the M1 muscarinic acetylcholine receptor achieved by allosteric potentiation. 24 Aug 2009
• Inactivation of the infralimbic but not the prelimbic cortex impairs consolidation and retrieval of fear extinction. 23 Aug 2009
• The bed nucleus of the stria terminalis mediates inter-individual variations in anxiety and fear. 17 Aug 2009
• Blockade of NMDA receptors and nitric oxide synthesis in the dorsolateral periaqueductal gray attenuates behavioral and cellular responses of rats exposed to a live predator. 13 Aug 2009
• Linking genetically defined neurons to behavior through a broadly applicable silencing allele. 11 Aug 2009
• Cornering the fear engram: long-term synaptic changes in the lateral nucleus of the amygdala after fear conditioning. 3 Aug 2009
• [NO-ergic system activation in the nucleus accumbens during presentation of contextual signals of danger] 30 Jul 2009
• Interpreting patterns of brain activation in human fear conditioning with an attentional-associative learning model. 30 Jul 2009
• Delayed extinction attenuates conditioned fear renewal and spontaneous recovery in humans. 30 Jul 2009
• Is a dark virtual environment scary? 30 Jul 2009
• Activation of metabotropic glutamate receptor type 2/3 supports the involvement of the hippocampal mossy fiber pathway on contextual fear memory consolidation. 26 Jul 2009
• Reciprocal patterns of c-Fos expression in the medial prefrontal cortex and amygdala after extinction and renewal of conditioned fear. 22 Jul 2009
• Amygdala activation predicts gaze toward fearful eyes. 13 Jul 2009

See a longer list of these articles.

Technical information about 'Fear'

Definition: The affective response to an actual current external danger which subsides with the elimination of the threatening condition.

Descriptor UI: D005239

Alternative terms: Fear; Fears;

Related Mesh Headings: Phobic Disorders;

Allowable Qualifiers: classification; drug effects; physiology; radiation effects; ethics; psychology;

Tree Number: F01.470.361;

Technical Notes: human & animal