PSY290H5 Lecture Notes - Lecture 6: Lamellar Corpuscle, Small Press, List Of Military Aircraft Of Sweden
Document Summary
All organisms have sensory organs containing receptor cells that sense some stimuli but not others. Sensory organs are very diverse but all senses use the same type of energy- action potentials. Perception is the product of how we see the environment, not how the environment actually is. Number of waves= number of different types of visual receptors. Sensory systems rely on specialized receptor cells to detect specific energies, as well as brain systems that receive input from these receptors. Transduction: need to change energy from environment to a neural signal in the brain: pacinian corpuscle (discussed later, photoreceptor- photopigment absorbs and changes shape in response to light, hair cell- mechanical transduction open and closes ion channels. String actually pulls cells to open and close channels: hearing- auditory system can detect stimulus that is a trillion times smaller than light, sensory systems are limited in working with action potentials, 500-1000 ap/s. Each system has a unique way of transducing.
