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- W229541208 abstract "Signal frequency in a visual vigilance task was increased at two different testing times, corresponding to a and a in the diurnal cycle. Two methods were used to increase signal frequency. An increase solely in signal probability, with total event rate unaffected, improved detection performance mainly at the low point of the cycle. This improvement was accompanied by a decrease in values of the signal detection theory index, β. An increase in total event rate, at a fixed level of signal probability, had no significant effect on detection rates, but decreased false alarm rates at both testing times. The decrease was accompanied by increased values of d; and β. Performance temperature relationships were found only in the high event rate conditions. Morning values of d' exhibited a relationship with degree of introversion. No relationship was found between introversion and daily temperature changes which casts some doubt on the generality of changeover theory." @default.
- W229541208 created "2016-06-24" @default.
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- W229541208 date "1974-01-01" @default.
- W229541208 modified "2023-09-27" @default.
- W229541208 title "Effects of time of day and signal frequency on vigilance performance" @default.
- W229541208 hasPublicationYear "1974" @default.
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