PROCESSING OF VISUAL FEEDBACK IN RAPID MOVEMENTS

DETERMINED THE MINIMUM AMOUNT OF TIME NECESSARY TO PROCESS VISUAL FEEDBACK FROM A MOVEMENT. 8 STUDENTS RAPIDLY MOVED A STYLUS FROM A HOME POSITION TO A TARGET. ON 1/2 THE TRIALS ALL LIGHTS TURNED OFF AT THE START OF THE MOVEMENT SO THAT THEY WERE MADE IN THE DARK. VISUAL FEEDBACK DID NOT FACILITATE ACCURACY IN HITTING THE TARGET WHEN THE MOVEMENT WAS AS SHORT AS 190 MSEC. FOR DURATIONS OF 260 MSEC. OR LONGER, HAVING THE LIGHTS ON FACILITATED ACCURACY, SUGGESTING THAT IT TAKES 190-260 MSEC. TO PROCESS THE FEEDBACK. (PsycINFO Database Record (c) 2006 APA, all rights reserved). © 1968 American Psychological Association.