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The release from refractoriness hypothesis of N1 of event-related potentials needs reassessment
رهایی از فرضیه مقاومتی N1 پتانسیلهای مربوط به رویداد نیاز به ارزیابی مجدد دارد-2020 N1 of event-related potentials (ERPs) is augmented in amplitude in ~50e150 ms by occasional changes
(deviants) in the physical features of a sound repeated at intervals of from ~400 ms to seconds (standard).
The release-from-refractoriness hypothesis links the N1 augmentation to a deviant-feature-specific
neural population that is fresh to fully respond as opposed to a standard-feature-specific neural population
that is unresponsive due to its post-response refractoriness. The present work explored this hypothesis
in the context of ERP studies, behavioral habituation studies and studies on stimulus-specific
adaptation (SSA). The idea of hundreds of milliseconds neural population-level refractoriness was
observed to be founded upon negative N1 evidence (no observable effect of dishabituating stimuli on N1
to standards e the null hypothesis retained) and merely supported by positive N1 evidence (null hypotheses
rejected). This idea was also found to be directly challenged by positive N1 evidence. No
conclusive network- or single-neuron-level evidence was found for the refractoriness. Therefore, the
validity of the release-from-refractoriness hypothesis of N1 to guide psychophysiological research needs
reassessment. Keywords: Habituation | Dishabituation | Event-related potential | N1 | Mismatch negativity (MMN) | Adaptation | Neural fatigue | Stimulus-specific adaptation (SSA) |
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