Naslov
Effects of stimulus expectancy on heart rate and movement execution

Autori
Reić, Ina ; Manenica, Ilija

Izvornik
Review of Psychology (1330-6812) 9 (2002), 1-2; 49-53

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
stimulus expectancy ; heart rate ; movement execution

Sažetak
Some investigations on stimulus expectancy situations have shown decreasing effects of expectancy intervals on heart rate and reaction time, which was interpreted as facilitating effects of such situations. The aim of this study was to find out whether the stimulus expectancy, followed by lower arm movement, would facilitate the execution of movements. Trained subjects executed lower arm movements of different amplitudes, on a kinaesthesiometer, without visual control, after a sound stimulus. Cardiac R-R intervals were continuously recorded during stimulus expectancy, movement execution and resting periods. Results showed cardiac deceleration for all expectancy intervals, but contrary to results of studies on reaction time, no effects of expectancy interval length were found on the movement time. This disagreement could be due to task complexities, where the reaction tasks were comparatively simple, while the movement tasks included, not only speed and precision, but also kinaesthetic information processing, which had its effects on sinus arrhythmia, as well.

Izvorni jezik
Engleski

Znanstvena područja
Psihologija

POVEZANOST RADA