Neurophysiology of Sustained Attention
Sustained attention requires the elaborated processing of sensory information by an alert and aroused nervous system. The spectrum of the electroencephalogram provides useful information concerning the state of CNS arousal as related to vigilance performance. Similarly, taskevoked pupillary responses reflect the intensity of cognitive processing, which declines during prolonged sensory monitoring. Such effects are not confined to simple sensory tasks, but are also observed in monotonous tests of complex reasoning.
KeywordsSustained Attention Sleep Loss Pupillary Response Monitoring Task Central Nervous System Activation
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