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Stimulus-dependent modulation of perceptual and motor learning in a serial reaction time task.

Kirsch W, Hoffmann J - Adv Cogn Psychol (2012)

Bottom Line: Two sequences were used, in which structural regularities occurred either in the horizontal or in the vertical locations of successive stimuli.This pattern of results was independent of whether three fingers (Experiment 1) were used or only one finger (Experiment 2) was used for responding.This result suggests that perceptual and motor learning mechanisms may be weighted differently depending on the context in which the stimulus is presented.

View Article: PubMed Central - PubMed

Affiliation: Department of Psychology, University of Würzburg, Germany.

ABSTRACT
In two experiments, we investigated the impact of spatial attributes on the representation acquired during a serial reaction time task. Two sequences were used, in which structural regularities occurred either in the horizontal or in the vertical locations of successive stimuli. After training with the dominant hand, participants were required to respond with the non-dominant hand to either the original sequence or to a mirror-ordered version of the original sequence that required finger movements homologous to those used during training. We observed that a difference in reaction times between the two transfer conditions was smaller in the vertical sequence than in the horizontal sequence. This pattern of results was independent of whether three fingers (Experiment 1) were used or only one finger (Experiment 2) was used for responding. This result suggests that perceptual and motor learning mechanisms may be weighted differently depending on the context in which the stimulus is presented.

No MeSH data available.


Mean reaction times (RTs) per block for the horizontal and verticalconditions in Experiment 2. Note that the order of parallel and mirrortransfer blocks was counterbalanced across participants. R = randomstimuli; S = sequenced stimuli; pa = parallel transfer; mi = mirrortransfer.
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Figure 4: Mean reaction times (RTs) per block for the horizontal and verticalconditions in Experiment 2. Note that the order of parallel and mirrortransfer blocks was counterbalanced across participants. R = randomstimuli; S = sequenced stimuli; pa = parallel transfer; mi = mirrortransfer.

Mentions: RTs from error trials (2.80%) and outliers (2.23%) were excluded from analyses.The mean median RTs for the remaining trials are illustrated in Figure 4.


Stimulus-dependent modulation of perceptual and motor learning in a serial reaction time task.

Kirsch W, Hoffmann J - Adv Cogn Psychol (2012)

Mean reaction times (RTs) per block for the horizontal and verticalconditions in Experiment 2. Note that the order of parallel and mirrortransfer blocks was counterbalanced across participants. R = randomstimuli; S = sequenced stimuli; pa = parallel transfer; mi = mirrortransfer.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3376890&req=5

Figure 4: Mean reaction times (RTs) per block for the horizontal and verticalconditions in Experiment 2. Note that the order of parallel and mirrortransfer blocks was counterbalanced across participants. R = randomstimuli; S = sequenced stimuli; pa = parallel transfer; mi = mirrortransfer.
Mentions: RTs from error trials (2.80%) and outliers (2.23%) were excluded from analyses.The mean median RTs for the remaining trials are illustrated in Figure 4.

Bottom Line: Two sequences were used, in which structural regularities occurred either in the horizontal or in the vertical locations of successive stimuli.This pattern of results was independent of whether three fingers (Experiment 1) were used or only one finger (Experiment 2) was used for responding.This result suggests that perceptual and motor learning mechanisms may be weighted differently depending on the context in which the stimulus is presented.

View Article: PubMed Central - PubMed

Affiliation: Department of Psychology, University of Würzburg, Germany.

ABSTRACT
In two experiments, we investigated the impact of spatial attributes on the representation acquired during a serial reaction time task. Two sequences were used, in which structural regularities occurred either in the horizontal or in the vertical locations of successive stimuli. After training with the dominant hand, participants were required to respond with the non-dominant hand to either the original sequence or to a mirror-ordered version of the original sequence that required finger movements homologous to those used during training. We observed that a difference in reaction times between the two transfer conditions was smaller in the vertical sequence than in the horizontal sequence. This pattern of results was independent of whether three fingers (Experiment 1) were used or only one finger (Experiment 2) was used for responding. This result suggests that perceptual and motor learning mechanisms may be weighted differently depending on the context in which the stimulus is presented.

No MeSH data available.