BCS 110 Lecture Notes - Lecture 22: Sympathetic Nervous System, Anterior Pituitary, Chest Pain
20 Apr 2018
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4/19/18: classification of emotion, emotions are subjective, conscious experiences characterized primarily by psychophysiological expressions, biological reactions and mental states, studies have shown that people of different cultures make similar facial expressions in similar circumstances. Analysis of these expressions suggests that there are six basic human emotions: anger, happiness, surprise, disgust, sadness and fear. Physiological reaction is thus necessary to feel an emotion: cannon-bard (1915) - stimulus triggers both autonomic & somatic responses and emotion. Lesions of the acc are associated with fear, irritability and depression. Pair a neutral stimulus (e. g. , a tone) with an aversive stimulus (e. g. , a shock). Present the tone later and the animal will show a conditioned fear response (i. e. , a defensive behavior. Predatory aggression involves attacks against a member of another species for the purposes of obtaining food. Affective aggression is for show rather to kill for food (e. g. , establishing a defensive posture or dominance in a social hierarchy). (cats)
