Wavelength effects on simple reaction time

The effects of stimulus context on components of simple reaction time

59 Arguably, latency characteristics have been one of the most extensively investigated behavioural aspects in areas of psychological research ranging from psychophysics and neurophysiology to cognitive psychology. The investigations of simple reaction time (RT) in various sensory and motor modalities can be traced to the very origins of experimental psychology and continue to be an active area...

Interaction of raclopride and preparatory interval effects on simple reaction time performance.

In a series of three experiments, simple reaction time (RT) was characterized with respect to a variable preparatory interval (PI) in order to investigate the relationship between interval timing and RT. In Experiment 1, it was shown that RT decreases as a function of PI and that this effect varies with amount of training. In Experiment 2, RT was shown to increase during probe trials that used ...

The effects of a multi-ingredient, caffeine-containing supplement (iFocus®) on simple reaction time

Methods Seven (5 male, 2 female) physically active college students (Mean+SD: Age – 22.86+1.68 yr, Ht cm 174.33+10.44, Wt kg 74.51+13.50, years of training 5.50+2.14, hours of training per week, 8.21+2.23) volunteered for this investigation. In a double-blind, placebo-controlled, cross-over trial, subjects consumed one serving of iFocus 30-45 minutes prior to performance a test of simple reacti...

Effects of stimulus duration and intensity on simple reaction time and response force.

Previous research indicates that response force increases with stimulus intensity in simple reaction time (SRT) tasks. This result contradicts the common view that the perceptual system activates the motor system via a punctate go signal of fixed size. An elaborated view assumes that the size of the go signal depends on stimulus intensity so that more intense stimuli yield more forceful respons...

Effects of the intensity of auditory and visual ready signals on simple reaction time.