End of another day
From the Active Body to the Mind
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In all emotions, multiple volleys of neural and chemical responses change the internal milieu, the viscera, and the musculoskeletal system for a certain period and in a particular pattern. Facial expressions, vocalizations, body postures, and specific patterns of behavior (running, freezing, courting, or parenting) are thus enacted. The body chemistries as well as viscera such as the heart and lungs help along. Emotion is all about transition and commotion, sometimes real bodily upheaval. In a parallel set of commands the brain structures that support image-production and attention change as well; as a result, some areas of the cerebral cortex appear to be less active, while others become especially so.
In the simplest of diagrams, here is how a visually presented threatening stimulus triggers the emotion fear and leads to its execution.
For the purposes of providing a manageable description of the process of emotion and feeling, I have simplified them to fit into a single chain of events beginning with a single stimulus and terminating with the establishment of the substrates of the feeling related to the stimulus. In reality, as might be expected, the process spreads laterally into parallel chains of events and amplified itself. This is because the presence of the initial emotionally competent stimulus often leads to the recall of other related stimuli that are also emotionally competent. ..... Pages 63 / 64
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