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CAS NE 202 Final: NE 202 Final Exam Study Guide

27 Pages

Course Code
CAS NE 202
David Somers

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Arousal = intensity of emotion Valence = if it is pleasant or unpleasant Basic Emotions Neural substrates o Basic emotions Innate, cross cultural, evolutionarily old emotions that are expressed by particular physiological patterns and facial configurations Most basic emotions are unpleasant in valence Facial Expressions Emotion Vector Circumplex Models o Vector Model Order emotions along axis of positive and negative valence oriented at 90 degree angles meeting at a common endpoint Arousal is measured by the distance from the neutral endpoint Looks like a boomerang o Circumplex Model Orders emotion around the circumference of a circle centered at the intersection of two orthogonal axes of arousal (Xaxis) and valence (Y axis) The circumplex model is more suggestive of a continuum of emotional states Skin Conductance Response o Reflects the activity of sweat glands o Recorded form the second and third digits of the hand o Eccrine sweat glands on these body parts receive no parasympathetic innervation o Activity of sweat glands during emotional arousal increases electrical conduction of skin surface o Widely used in polygraph tests o Slow signal: better for arousal than valence Startle Response o Musculoskeletal reflex o Eyeblink component of the startle response is measured by electrodes over the orbicularisforehead o Sensitive to emotional valence (not arousal) o Includes the brainstem reticular formation that plays a role in arousal and interfaces with sensory and motor functions o EMG measurements of eye muscles o Measures musculoskeletal reflex o Fast, brief signal better for valence than arousal 3 Component Model of Emotions o breaking down the concept of emotion into different informationprocessing stages the evaluation of sensory input the conscious experience of a feelingstate of being the expression of behavioral and physiological responses o PHYSIOLOGY o FEELING
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