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bioinformational theory

a general theory of emotional–motivational organization, integrating cognitive and psychophysiological levels of analysis. It is concerned with how emotions are elicited and displayed and with how they interact; specifically, information about emotions is contained in associative memory networks that include action information (motor programs) and connections to subcortical motivation circuits. Emotions are viewed as context-specific action or response dispositions activated by input that modifies concepts in the emotion network. The model, originally forwarded in the 1970s as a theory of emotional imagery, was derived from research on fear and anxiety but has since evolved and acquired diverse applications across a variety of behavioral and emotional phenomena.

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Psychology term of the day

September 8th 2024

NMDA receptor

NMDA receptor

a type of glutamate receptor that binds NMDA as well as glutamate. NMDA receptors are coupled to ligand-gated ion channels and are also voltage-sensitive, which enables them to participate in a variety of information-processing operations at synapses where glutamate is the neurotransmitter. The drugs of abuse ketamine and PCP are antagonists at NMDA receptors, preventing the influx of calcium ions at calcium channels, which may cause the hallucinogenic effects of these drugs. Excessive flow of calcium ions into the presynaptic neuron via the NMDA receptor is thought to contribute to glutamate toxicity. A hypothesis on the etiology of schizophrenia involves dysfunction of the NMDA glutamate receptor (see glutamate hypothesis). Compare AMPA receptor.