PSYCH 202 Lecture Notes - Lecture 38: Microvillus, Basilar Membrane, Outer Ear
Document Summary
Sensation: detection of our environment by our bodies and brains, perception, the subjective experience of our environment, transduction, translation of an external stimulus into a neural signal, touch, mechanical pressure, taste/smell, chemical molecules. Sound: vibration of air molecules, vision, photons. Proprioception: where our bodies are in space, golgi tendon organ, muscle spindles. Spinal cord uses direct input from sensory receptors for immediate control of reflexes: processed in same area of cortex as touch. Proprioception fails: autotopagnosia, denial of our own (specific) body parts, phantom limbs, perception of limbs remains, following amputation. Smell: olfaction, sense of smell; allows perception of airborne chemicals, odorants, chemical signals perceived as scents. Labeled lines: separate sensory modalities use separate pathways (mostly, miracle fruit combines the lines. Synesthesia (joined sensations: stimulation of one sense leads to perceptual experience in another. Physics of sound: what is sound, physical definition, pressure changes in the air or other medium, perceptual definition.
