VARIAÇÃO DIURNA ENTRE MATUTINOS E VESPERTINOS NOS TEMPOS DE REAÇÃO SIMPLES E DE MOVIMENTO

The aim of this study was to determine whether differences between the preferences of hours of sleep and wake (morningness-eveningness) have an impact on reaction times (RT) and motion (TM) measured in the early morning and late afternoon.

Forty students, 20 morning-types and 20 evening-types, performed by the morning and by the afternoon a key-pressing task with measures of simple reaction time and movement time. According to the results, both morning-types and evening-types showed lower simple reaction times in the afternoon as compared to values in the morning and morning-types obtained lower movement times than evening-types, both in the morning and in the afternoon.