title: Ultradian cyclicity in auditory and visual reaction time during long performance.
abstract: 24 subjects were tested to check the hypothesis proposed by Kleitman about a "basic rest-activity cycle". Reaction time tasks were delivered at 10-min. intervals for 320 min. Spectral density function analyses showed no significant periods within the limits of the cycle. Discussion concerns fulfilling assumptions of spectral analysis and Fisher's test.
authors.affiliation: Universitat de Barcelona, Departament de Psiquiatria i Psicobiologia Clinica, Facultat de Psicologia, Spain.
authors.forename: H
authors.initials: H
authors.lastname: Almirall
authors.forename: R
authors.initials: R
authors.lastname: Ferrer
authors.forename: M
authors.initials: M
authors.lastname: Sànchez-Turet
mesh_terms: D000328:Adult; D001143:Arousal; D001288:Attention; D001307:Auditory Perception; D005260:Female; D005556:Form Perception; D006801:Humans; D008297:Male; D010364:Pattern Recognition, Visual; D010507:Periodicity; D011597:Psychomotor Performance; D011930:Reaction Time