Proceedings of the Annual Meeting of the Cognitive Science Society

Studies of dyslexics, whose implicit memory is impaired,suggest that their implicit inference of sound statistics and itsintegration into perception is inefficient. Specifically,dyslexics' implicit memory decays faster and consequentlyonly accumulates information over shorter temporal windows.We now ask whether this abnormal dynamic is domain generalby measuring its cortical distribution. We measure thedynamics of behavioral context effects and the concurrentneural adaptation during fast acquisition fMRI. We find asimilar pattern of fast decay of adaptation across a broad rangeof cortical areas, though most significant effects are found inauditory cortex. This broad neural distribution suggests that therelevant aspect of implicit statistical inferences is not the natureof stimuli, but their temporal distribution.