Subject:
UNIT 4: SENSATION AND PERCEPTION Sensation: your window to the world Sensation a process by which our sensory receptors and nervous system receive and represent stimulus (or physical) energy and encode it as neural signals. Our sensory and perceptual processes work together to help us sort out complex processes Bottom-Up Processing analysis that begins with the sense receptors and works up to the brain?s integration of sensory information Top-Down Processing information processing guided by higher-level mental processes as when we construct perceptions drawing on our experience and expectations The Absolute Threshold minimum stimulation needed to detect a particular stimulus 50% of the time. It is the intensity at which we can detect a stimulus half of the time
