Priming effect of figures that represent external objects or human body parts

A visual stimulus (e.g., a letter, word, or object) may have a lasting effect on the processing of subsequent stimuli. The present study verified the priming effect of a figure (i.e., five-petal daisy) on manual reaction time (MRT) to another equal or different five-petal daisy. Two distinct groups...

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Veröffentlicht in:Psychology & Neuroscience 2013, Vol.6 (1), p.7-13
Hauptverfasser: de Oliveira, Felipe Santos, Filho, Roberto S. Fraga, Matsushima, Elton Hiroshi, Gawryszewski, Luiz G
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creator de Oliveira, Felipe Santos
Filho, Roberto S. Fraga
Matsushima, Elton Hiroshi
Gawryszewski, Luiz G
description A visual stimulus (e.g., a letter, word, or object) may have a lasting effect on the processing of subsequent stimuli. The present study verified the priming effect of a figure (i.e., five-petal daisy) on manual reaction time (MRT) to another equal or different five-petal daisy. Two distinct groups were tested. One group was instructed that the five-petal daisy represented a human hand. The other group was instructed that the five-petal daisy represented a flower. The figures in the pairs of stimuli could share or not share some features such as handedness and view. In both groups, after being informed whether the five-petal daisy represented a flower or human hand, an uninformative flower was presented for 200 ms in the center of the screen. After 1000 ms, a second flower was presented in the same location until the observer responded by pressing a left or right switch. The results showed that prior presentation of the five-petal daisy affected MRT only when the figure represented a human hand. Furthermore, an opposite effect of view on MRT was found. The shorter MRT to the back (dorsal) view of the figure that represented a human hand could be attributable to a faster response to the dorsal view of a hand figure made with a prone posture of the participants' hand than to a front (palm) view. The longer MRT to the back view of the figure that represented a flower may be due to a mental rotation of the object along its vertical axis before selecting the correct response because the response was based on the position of the asymmetrical petal in the canonical front view of the daisy.
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subjects Female
Human
Human Body
Male
NEUROSCIENCES
Object Recognition
Priming
PSYCHOLOGY, BIOLOGICAL
Reaction Time
Visual Perception
title Priming effect of figures that represent external objects or human body parts
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