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Full-Text Articles in Musculoskeletal, Neural, and Ocular Physiology

Cross-Modal Enhancement Of Perceived Brightness: Sensory Interaction Versus Response Bias, Yoav Arieh, Lawrence E. Marks, Eric C. Odgaard Jan 2003

Cross-Modal Enhancement Of Perceived Brightness: Sensory Interaction Versus Response Bias, Yoav Arieh, Lawrence E. Marks, Eric C. Odgaard

Department of Psychology Faculty Scholarship and Creative Works

Stein, London, Wilkinson, and Price (1996) reported the presence of cross-modal enhancement of perceived visual intensity: Participants tended to rate weak lights as brighter when accompanied by a concurrent pulse of white noise than when presented alone. In the present study, two methods were used to determine whether the enhancement reflects an early-stage sensory process or a later-stage decisional process, such as a response bias. First, the enhancement was eliminated when the noise accompanied the light on only 25% versus 50% of the trials. Second, the enhancement was absent when tested with a paired-comparison method. These findings are consistent with …


Context Effects In Visual Length Perception: Role Of Ocular, Retinal, And Spatial Location, Yoav Arieh, Lawrence E. Marks Apr 2002

Context Effects In Visual Length Perception: Role Of Ocular, Retinal, And Spatial Location, Yoav Arieh, Lawrence E. Marks

Department of Psychology Faculty Scholarship and Creative Works

In three experiments, we examined the transfer of orientation-contingent context effects between the eyes and across portions of the retina with or without variation in external spatial location. Previous research had shown that vertical lines are judged long, relative to horizontal lines, when the stimulus set comprises relatively long horizontals and short verticals (Contextual Condition B), as compared with the reverse when the stimulus set comprises relatively short horizontals and long verticals (Contextual Condition A). Consequently, the contextual set of stimuli influences the magnitude of the horizontal-vertical illusion (HVI), decreasing its size under Contextual Condition A and increasing its size …