CAS PS 101 Chapter Notes - Chapter 5: Neural Adaptation, Absolute Threshold, Response Bias

• School: Boston University
• Department: Psychological & Brain Sciences
• Course: CAS PS 101
• Professor: Ira Wells

Document Summary

Sensation: the detection of physical stimuli and transmission of that info to the brain. Perception: brains processing, organization, and interpretation of sensory info. Construction of useful and meaningful info about a particular sensation. 5. 1 how does perception emerge from sensation? bottom-up processing: perception based on the physical features of the stimulus top-down processing: how knowledge, expectations, or past experiences shape the interpretation of the sensory info. What we expect to see influences what we see. Ability to make sense out of incorrect stimuli through top-down processing is why proofreading our own writing is difficult. Sensory coding: sensory systems translate the physical properties of stimuli into patterns of neural impulses. Transduction: the process by which sensory stimuli are converted to signals the brain can interpret. Involves sensory receptors which are specialized cells in the sense organs. They receive the chemical or physical stimulation and pass the impulses to the brain in a form of neural impulses.