TY - JOUR
T1 - The effect of interactions between one-dimensional component gratings on two-dimensional motion perception
AU - Burke, Darren
AU - Wenderoth, Peter
PY - 1993
Y1 - 1993
N2 - Ferrera and Wilson [(1990) Vision Research, 30, 273-287] reported veridical perception of the direction of motion of Type I plaids, whose component gratings span the resultant direction, but marked misperception of the direction of motion of Type II plaids, whose component gratings both lie on one side of the resultant direction. Because they failed to find any effect of component direction (angular) separation on this misperception, Ferrera and Wilson concluded that the misperception was not due to perceptual repulsion of component directions. We report that component direction repulsion does occur, that plaid direction misperception is tuned to component separation, with larger repulsions for smaller angles. It is concluded that there is no fundamental difference in direction coding for Type I and Type II plaids, and that Ferrera and Wilson failed to find a direction separation effect because the range of separations they used was insufficiently broad to detect the slope of the angular function.
AB - Ferrera and Wilson [(1990) Vision Research, 30, 273-287] reported veridical perception of the direction of motion of Type I plaids, whose component gratings span the resultant direction, but marked misperception of the direction of motion of Type II plaids, whose component gratings both lie on one side of the resultant direction. Because they failed to find any effect of component direction (angular) separation on this misperception, Ferrera and Wilson concluded that the misperception was not due to perceptual repulsion of component directions. We report that component direction repulsion does occur, that plaid direction misperception is tuned to component separation, with larger repulsions for smaller angles. It is concluded that there is no fundamental difference in direction coding for Type I and Type II plaids, and that Ferrera and Wilson failed to find a direction separation effect because the range of separations they used was insufficiently broad to detect the slope of the angular function.
KW - Plaid Motion Intersection of constraints Distribution shift Direction perception
UR - http://www.scopus.com/inward/record.url?scp=0027474728&partnerID=8YFLogxK
U2 - 10.1016/0042-6989(93)90090-J
DO - 10.1016/0042-6989(93)90090-J
M3 - Article
C2 - 8447106
AN - SCOPUS:0027474728
SN - 0042-6989
VL - 33
SP - 343
EP - 350
JO - Vision Research
JF - Vision Research
IS - 3
ER -