Distinct Mechanisms Mediate Visual Detection and Identification

摘要: A core organizing principle for studies of the brain is that distinct neural pathways mediate behavioral tasks [1, 2]. When two related are mediated by a common pathway, one likely to generalize other. Here, we test whether performance on laboratory model object detection and identification mechanisms visual adaptation. Although both rely luminance pattern in images, their demands processing quite different. Object requires discriminating image differences associated with light reflected from adjacent objects. To encode these reliably, neurons adapt limited dynamic range prevailing viewing conditions [3-6]. identification, other hand, fixed response an independent illumination [7]. We compared discrimination simulated surfaces. In striking contrast less structured contexts, found clear evidence processes judgments tasks. These results challenge models account perceived lightness entirely through action image-encoding mechanisms.