A new analysis, based on the concept of the ideal observer in signal detection theory, is described. It allows: tracing of the flow of discrimination information through the initial physiological stages of visual processing for arbitrary spatio-chromatic stimuli, and measurement of the information content of said visual stimuli. (TJH)

Discrepant effects of drugs on behavior maintained by temporal-discrimination procedures make conclusive statements about the neuropharmacological bases of timing difficult. The current experiment examined the possible contribution of a general, drug-induced disruption of stimulus control. Four pigeons responded on a three-component multiple…

Many of the references in this bibliography are followed by a listing of ERIC descriptors to indicate the contents. The literature is pertinent to educational facilities design in providing for visual orientation, comprehension, and response to the physical environment. Listed items are presented in two sections: (1) human physiological,…