An enquiry into the relationship between activation and performance using saccadic eye movement parameters

摘要

Saccadic eye movement was measured in three studies in a tracking task in which increasing stimulus jumping frequency indicates increasing difficulty. In the first study, after taking a benzodiazepine 16 subjects showed decreased saccadic velocity (activation indicator), but their reaction times and anticipatory behaviour (performance indicators) did not parallel this decline, although the saccadic amplitudes did. In the second deactivation study 23 subjects worked on somewhat boring oculomotor tasks for 2 h and shoed the same decrease in saccadic velocity but showed almost no performance decline.