PSY 102 Study Guide - Midterm Guide: Subliminal Stimuli, Detection Theory, Absolute Threshold
27 Nov 2018
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Document Summary
Sensation: the process by which our sensory receptors & nervous system and represent stimulus emerges from our environment: detect physical energy from environment & encode it as neural signals. Perception: the process of organizing & interpreting sensory information, enabling us to recognize meaningful objects and event. Transduction: the process of converting an external energy or substance into electrical activity within neurons: conversion of one form of energy to another, transforming of stimulation energies into neural impulses. Sensory adaptation: activation is greatest when a stimulus is first detected: diminished sensitivity as a result of constant stimulation, conserves energy and attentional resources. Absolute threshold: lowest level of a stimulus needed for the nervous system to detect a change 50% of the time, when no other stimuli are present. Subliminal: below one"s absolute threshold for conscious awareness: subliminal perception: the processing of sensory information that occurs below the level of conscious awareness (limen, subliminal persuasion (priming): subliminally presented words that influence our decisions.
