PSY100H1 Midterm: Midterm- Textbook Chapter 5 Notes You dont need to read textbook! Just read this! I took this course on 2010. Guaranteed A in this midterm. Ch.5) Sensation, Perception, and Attention
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PSY100H1 Full Course Notes
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Sensation: how sense organs respond to external stimuli and transmit the responses to the brain. Perception: the processing, organization, and interpretation of sensory signals that result in an internal representation of the stimulus. Stimulus must be coded to be understood by the brain. Sensory coding: the way that sensory organs translate a stimulus"s physical properties into neural impulses. Transduction: a process by which sensory receptors produce neural impulses when they receive physical or chemical stimulation. Sensation coding can be divided into two categories. Quantitative factors such as intensity, brightness, and loudness (often indexed by the neural firing frequency) Qualitative factors such as colour or taste (different receptors) Absolute threshold: the minimum intensity of stimulation that must occur before one can experience a sensation. Difference threshold: the minimum amount of change required in order to detect a difference between intensities of stimuli.
