PSYCH 350 Chapter Notes -Functional Magnetic Resonance Imaging, Carroll Izard, Heart Rate Variability
11 Mar 2013
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Document Summary
Emotions are a complex set of behaviors produced in response to some external or internal event, or elicitor, which serve to motivate and direct thoughts and actions. Physiological component, involving changes in autonomic nervous system activities such as respiration and heat rate. Expressive component, usually a facial display that signals the emotion such as smiles, grimaces, cries and laughter. Experiential component, the subjective feeling or cognitive judgment of having an emotion. Emotions serve to initiate, maintain, or terminate interactions with others. Moods are more enduring emotional states that may help us understand the child"s personality attributes, such as the tendency to be shy, dependent, or aggressive. Can record changes in physiological functions such as heart rate (acceleration or deceleration). Heart rate variability (the individual"s basic heart rate pattern). Electroencephalogram (eeg) patterns showing brain activity as affective stimuli are presented. A new technology is positron emission tomography (pet) and functional magnetic resonance imaging (fmri).
