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Перевод: afferent speek afferent


[прилагательное]
центростремительный; афферентный


Тезаурус:

  1. Intentionality is usually overlooked by causal theorists who tend to see their job as being to sort out the afferent limb.
  2. Two independent sets of afferent fibres converging on a common population of cells are activated by stimulating electrodes (S1 and S2) placed either side of the extracellular recording electrode.
  3. Simplified diagram of a transverse section through the hippocampus of the rat, showing the principal neuronal fields (granule cells of the dentate gyrus (DG) and the pyramidal cells of areas CA3 and CA1), and the main excitatory afferent projections (the perforant path (pp) from entorhinal cortex to granule cells, the mossy fibre projection (mf) from granule cells to CA3 cells, and the Schaffer collateral (Sch) -commissural (comm) system which connects ipsilateral and contralateral CA3 cells to CA1 cells).
  4. More centrally, in the cerebral cortex the afferent fibres from groups of receptors are "wired together" so that more complexly patterned stimuli - such as edges or lines of a certain inclination - may preferentially elicit neural activity and the corresponding subjective experience.
  5. It may even be possible for background, contextual stimuli to interact with the pattern of nervous activity evoked by the target stimulus in the early stages of sensory or perceptual processing (Hull's (1943) notion of "afferent neural interaction").
  6. What is now needed to complete a mechanistic description of the induction requirements for associative LTP is a molecular coincidence detector, able to respond to the conjunction of activity in afferent fibres and adequate depolarization in target dendrites.
  7. The causal theory of perception relates the object and contents of perception in two directions: there is an afferent limb connecting the object with the nervous system in which perception is generated; and an efferent limb in virtue of which the neural events "reach out to" or "are about or of" the object.
  8. In each vertebrate segment the "reflex arc" is based upon two neurons: the afferent sensory root and the efferent motor root.
  9. The measurement of Ca 2+ transients associated with single action potentials in hippocampal afferent terminals has not yet been reported; however, the Ca 2+ signal produced in mossy fibre terminals by trains of stimuli is not changed following the induction of LTP in this NMDA receptor-independent pathway.
  10. These include an effect on gastric emptying and intestinal transit time, the reduction of intraluminal pressure and colonic faecal transit, all of which may alter central blood pressure regulation via afferent nerves from the gastrointestinal tract (Anderson, 1981).
  11. Cooperativity describes the existence of an intensity threshold for induction; "weak" tetani, activating relatively few afferent fibres, do not trigger LTP.
  12. D. Ascending afferent volleys to thalamus and cortex.
  13. Associativity has a similar explanation except that the required depolarization is provided by a different set of afferent fibres; in theory, these "helper" inputs could use any neurotransmitter that promotes depolarization, and, experimentally, depolarization is often provided by injecting current into the cell.
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