Abstract
Photically evoked afterdischarge (AD) parameters were examined in albino rats during the time course of 1 h of iterative photic stimulation (515 light flashes). It was observed that percentage of AD elicitation, duration of AD activity, and number of spindle waves per AD increased and then subsequently decreased over time. The amplitude of the largest peak-to-peak wave per AD was unaffected by time. Greatest AD elicitation took place during the 5- to 15-min time segment following the initiation of iterative photic stimulation. Likewise, the last 5 min of iterative stimulation yielded the lowest AD elicitation scores. These data suggest the operations of an arousal continuum in the process of AD elicitation. It was also observed that spontaneous AD-like waves occurred in the visual cortex at irregular intervals that were not specifically correlated with the light flashes.
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Bigler, E.D., Fleming, D.E. Habituation and the occurrence of photically evoked afterdischarges in the albino rat. Bull. Psychon. Soc. 4, 275–277 (1974). https://doi.org/10.3758/BF03336724
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DOI: https://doi.org/10.3758/BF03336724