PsychologyChapter 8 (in part)The psychology of vision The purpose of human vision is to identify meaningful objects and actions.Your visual system has sorted all the points and graduations that are present in the reflected light into useful renditions of the objects. It has provided you’re with all the information you need to reach out and touch, or pick up, whichever object you want to use next.Vision researchers generally conceive of object perception as a type of unconscious problem solving, in which sensory information provides clues that are analyzed using information that is already stored in the person’s head.The detection and integration of stimulus featuresAny object that we see can be thought of as consisting of a set of elementary stimulus features, including the various straight and curved lines that form the object’s contours, the brightness and color of the light that the object reflects and the object’s movement or lack of movements with respect to the background.Feature detection in the visual cortexGanglion cells of the optic nerve run to the thalamus and form synapses with other neurons that carry their output to the primary visual area of the cerebral cortex.Within the primary visual area, millions of neurons are involved in analyzing the sensory input.Different neurons respond to different patterns.Edge detectors: neurons that respond best to stimuli that contains a straight contour separating a black patch from a white patch.Bar detectors: respond best to a narrow white bar against a black background, or a narrow black bar against awhite background.Any...