de.mpg.escidoc.pubman.appbase.FacesBean
Deutsch
 
Hilfe Wegweiser Impressum Kontakt Einloggen
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Vortrag

Do we keep track of where we've been or what we've done?

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons84258

Thornton,  IM
Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;

Externe Ressourcen
Es sind keine Externen Ressourcen verfügbar
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Horowitz, T., & Thornton, I. (2000). Do we keep track of where we've been or what we've done?. Talk presented at 23rd European Conference on Visual Perception (ECVP 2000). Groningen, Netherlands.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0013-E49A-B
Zusammenfassung
We explored the interaction between visual search, memory, and action using a simple visuomotor task. Stimuli were eight light-grey disks (targets; ~1 deg diameter) on a medium-grey background. Targets were numbered 1 - 8, and placed randomly within a 12 deg × 11.5 deg rectangle. The task was to move a mouse pointer to each target and click on it in numerical order, as quickly as possible, starting with number 1. Twelve subjects performed 60 trials in each of two conditions: vanish -- each target was removed from the screen after the subject clicked on it; no change -- clicking on a target did not change the display. Reaction time (RT) decreased roughly linearly by 22.89 ms per item with each response (not counting RT to the first target). There was no effect of condition, nor an interaction. We conclude that all targets initially compete at some level to control responses. Each response completely eliminates that target from competition. In a further study, we attempted to separate retrospective (what you did) and prospective (what you will do) elements of the task. We did this by scrambling items ahead of the current target after each response. Preliminary results suggest prospective memory may be driving the decrease in RT.