Rod Signals in Higher Color Mechanisms: The McCollough Color Aftereffect Observed in Scotopic Illumination

摘要: The McCollough color aftereffect — a long-lasting specific to both line orientation and spatial frequency was observed in scotopic illumination well below the rod-cone break. Two adaptation procedures were used: (a) Adaptation photopic green vertical grating alternating with magenta horizontal or an orange blue grating; (b) gratings of different low apatial frequencies. After adaptation, test patterns viewed illumination. sftereffects patterns. These results are consistent physiological observations that rod signals feed into opponent mechanisms.