Psychology Final Exam Notes.docx

Psychology Final Exam Notes.docx - Sensation and Perception...

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Sensation and Perception – Chapter Five The Basics Sensation Stimulus detection o Our sense organs translate environmental stimuli into nerve impulses o Those impulses are then sent to the brain Perception Making “sense” of what our sense tell us o Organizing the stimulus input and giving it meaning o Perception is heavily influence by context Transduction Characteristics of the stimulus are converted into nerve impulses o There are more than just 5 senses: balance, temperature, pain, pressure, and immune system are all sensory systems o Sensory system extract info that we need to survive from the environment Synesthesia Condition in which the brain mixes up senses (ex. Sounds have colors) o Theory 1: The pruning of neural connections that occurs in infancy hasn’t happened o Theory 2: insufficient inhibition in the brain so input overflows to other areas Psychophysics Psychophysics The study of the relation between physical stimulus and physiological response Fechner: “The father of psychophysics” Absolute Threshold Lowest intensity at which a stimulus can be detected 50% of the time Varies depending on fatigue, expectations, etc.
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