TY - JOUR AU - Spigel, Irwin M. AB - Published as a separate and in The Journal of Psychology, 1960, 60, 209-210. THE EFFECTS OF DIFFERENTIAL POST-EXPOSURE ILLUMINATION ON THE DECAY OF A MOVEMENT AFTER-EFFECT* Dcportment of Psychology, Tcmfdc UnivoJiiy IRWIN M. SPICEL Exploration of a somewhat neglected parameter in the perception of move- ment after-effects appears potentially capable of providing a new approach to the understanding of neural involvements in these phenomena. A recently completed pilot study has demonstrated the effects of post ex- posure darkness on the decay-rate of the after-effect. A systematic study of this influence, it is believed, will provide an instrument capable of more pre- cise determination of whether a peripheral or central role predominates in the production of this form of apparent movement. Specifically, it was found that an interval of darkness following exposure to a rotating spiral was in some way associated with a delay or inhibition of the decay of the usual after-effect of such rotation. Ten male Ss, all graduate students in psychology at Temple University, were employed for the study. Each S was given 10 trials, with a 30-second exposure to an 8-inch logarithmic spiral rotating at 200 rpm under conditions of constant illumination. As instructed, following cessation TI - The Effects of Differential Post-Exposure Illumination on the Decay of a Movement After-Effect JF - The Journal of Psychology DO - 10.1080/00223980.1960.9916438 DA - 1960-10-01 UR - https://www.deepdyve.com/lp/taylor-francis/the-effects-of-differential-post-exposure-illumination-on-the-decay-of-O1B9SnhTLn SP - 209 EP - 210 VL - 50 IS - 2 DP - DeepDyve ER -