VISION

VISION - Sensation and Perception-Part 1 • 3 steps of...

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Unformatted text preview: Sensation and Perception--Part 1 • 3 steps of sensation/perception • How many senses do we have? • Visual sense • Stimulus input • Physiology of seeing • Color vision • Gustatory sense Sensation and Perception 3 steps of how information from the outside world gets represented inside our heads # 1: Objects in the world emit or reflect stimuli # 2: Sensory organs detect the stimuli, encode it into neural information and send it to particular areas of the brain •-This process is known as SENSATION # 3: Our brain receives the neural information, organizes and interprets it as a perceptual experience. •-This process is known as PERCEPTION How many senses do we have? Sensory system Sense Organs We experience : 1) Visual Eyes Sight 2) Auditory Ears Sounds 3) Gustatory Tongue, mouth Tastes 4) Olfactory Nose Smells 5) Touch Skin Temperature, pain, vibration, texture 6) Vestibular Inner ear Balance 7) Kinesthetic Muscles and tendons Sense of body position and movement Vision: Stimulus Input • Electromagnetic energy: travels in waves. •-Visible light (all of the colors of the rainbow) that humans detect is a small slice of the whole spectrum of electromagnetic waves (about 350- 750 nanometers) Physiology of Seeing: Anatomy of the Eye • Cornea: transparent covering at the front of the eye: provides protection and support • Pupil: small opening through which light flows into eye. Changes in size depending on the amount of light that is let into the eye • Iris: colored area surrounding pupil; muscle that dilates and contracts the pupil • Lens: focuses incoming light by changing its curvature •...
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VISION - Sensation and Perception-Part 1 • 3 steps of...

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