SENSATION activation of receptors located in the eyes, ears, skin, nasal cavities, and tongue PERCEPTION the interpretation and organization of sensation SENSATION AND PERCEPTION Sensory receptors: specialized forms of neurons that are activated by different stimuli such as light and sound “Just noticeable difference”: the point at which a stimulus is detectable half the time it is present IGNORING SENSATIONS Habituation: ignoring a constant stimulus Sensory adaptation: sensory neurons stop responding to constant stimuli TWO TYPES OF PROCESSING INFORMATION Top-down processing: knowledge organizes individual features into a unified whole Bottom-up processing: analysis of smaller feature builds up to a complete perception LIGHT Light: a form of electromagnetic radiation described by wavelength and amplitude Color: determined by the length of the light waves. Brightness: determined by the ampli...
