SPATIAL-FREQUENCY ADAPTATION - THRESHOLD ELEVATION AND PERCEIVED CONTRAST

We have measured the spread of contrast adaptation across the dimensio n of spatial frequency. Threshold elevation was tightly tuned to the a dapting spatial frequency but became much broader as test contrast was increased. This means that, for a given test frequency, there are som e frequencies which do not raise threshold but do result in a loss of perceived contrast, The contrast dependence, retinal specificity and i nterocular transfer of adaptation effects elicited from same- and remo te-frequency adaptation were compared. While we were able to show some distinct differences between threshold and suprathreshold tests, we w ere unable to demonstrate any reliable differences in the retinal spec ificity and interocular transfer between same- and remote-frequency ad aptation. Copyright (C) 1996 Elsevier Science Ltd.