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A ROLE OF MASK IN MOTOR PRIMING

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Jaskowski P.

Kolokwia Psychologiczne (Psychological Colloquia)

2006

vol. 14

163-174

Masked stimuli (primes) can affect preparation of a motor response to subsequently presented target stimuli. In numerous studies it has been shown that the priming effect develops in time being biphasic: straight (benefits for compatible and costs for incompatible trials) for short primetarget temporal distances and inverse (benefits for incompatible and costs for compatible trials) for long ones. It is the matter of the current debate what is the second phase triggered by. According to the self-inhibition (SI) hypothesis, motor response elicited by a prime is automatically followed by an inhibition phase provided that the prime is effectively masked. The object-updating (OU) hypothesis assumes that this phase is triggered by the mask provided that it contains features calling for the response alternative to that preparation of which was induced by the prime. Our last behavioral and electrophysiological results suggest that the priming depends on the temporal position of the mask and that this modulating effect is present even though the prime is fully visible and has no relevant features. These findings contradict both the SI and OU hypothesis. They are, however, consistent with the mask-triggered inhibition (MTI) hypothesis which assumes that the mask triggers the inhibition of the prime-induced activation more or less independent of the mask content.

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1 Kolokwia Psychologiczne (Psychological Colloquia)

1 Jaskowski P.

1 2006

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A ROLE OF MASK IN MOTOR PRIMING