Cholinergic agents and the McCollough effect.

  title={Cholinergic agents and the McCollough effect.},
  author={William Byth and Damian J McMahon and David J. King},
  volume={29 4},
The strength of the McCollough effect (ME), a pattern-contingent colour aftereffect, has been shown to be inversely related to acetylcholine, being significantly strengthened by (anticholinergic) scopolamine and weakened by (cholinergic) physostigmine delivered before adapting to the ME stimuli. The purpose of the present study was (i) to establish whether the effect of pre-adaptation scopolamine is linearly dose-dependent and (ii) to investigate the effects of scopolamine and physostigmine… CONTINUE READING