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Psychological Research
Gepubliceerd in:

01-11-2007 | Original Article

Detection of motion onset and offset: reaction time and visual evoked potential analysis

Auteurs: Kairi Kreegipuu, Jüri Allik

Gepubliceerd in: Psychological Research | Uitgave 6/2007

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Abstract

Manual reaction time (RT) and visual evoked potentials (VEP) were measured in motion onset and offset detection tasks. A considerable homology was observed between the temporal structure of RTs and VEP intervals, provided that the change in motion was detected as soon as the VEP signal has reached critical threshold amplitude. Both manual reactions and VEP rise in latency as the velocity of the onset or offset motion decreases and were well approximated by the same negative power function with the exponent close to −2/3. This indicates that motion processing is normalised by subtracting the initial motion vector from ongoing motion. A comparison of the motion onset VEP signals in two different conditions, in one of which the observer was instructed to abstain from the reaction and in the other to indicate as fast as possible the beginning of the motion, contained accurate information about the manual response.
vorige artikel Preceding stimulus awareness augments offset-evoked potentials: Evidence from motion-induced blindness
volgende artikel Motion misperception caused by feedback connections: A neural model simulating the Fröhlich effect
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Metagegevens
Titel
Detection of motion onset and offset: reaction time and visual evoked potential analysis
Auteurs
Kairi Kreegipuu
Jüri Allik
Publicatiedatum
01-11-2007
Uitgeverij
Springer-Verlag
Gepubliceerd in
Psychological Research / Uitgave 6/2007
Print ISSN: 0340-0727
Elektronisch ISSN: 1430-2772
DOI
https://doi.org/10.1007/s00426-006-0059-1

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