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Neuroscience: Exploring the Brain 4th Edition

Neuroscience: Exploring the Brain (4th Edition)

Book Edition4th Edition
Author(s)Bear, Connors
PublisherWolters Kluwer

Chapter 18, End of Chapter, Review Questions, Exercise 1

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According to the theory of J-L, the sensory response is first sent followed by the feeling of anxiety. As per C-B theory a person can experience the emotion without showing the emotional expression.


1. J-L theory:

The oversleeping of an individual will not allow him to attend the exam. As a result, the body of the person gave out some sensory responses, generating the fear of the same. These responses are brought about by the sympathetic division and involve an increase in the heart rate, increased blood flow, vasoconstriction, raised blood pressure, profuse sweating, relaxation of the gallbladder, glycogen breakdown, and decreased stomach motility. All these are the flight or fright responses by the autonomic nervous system. All these responses result in the anxiety felt by the person as per the theory proposed by J-L. 


2. C-B theory: 

This is the exact same situation, but as per this theory the experience and the emotional response are independent of each other. According to this theory, both the physical  response to the situation and the emotions are expressed at the same time. As per C-B, an emotion may produce physiological changes that may not be sensed always. The response generated depends on the manner in which the thalamus is subjected to activation. The transfer of signals occurs in the thalamus directly, or via the ascending cortical input, generating an emotion. Hence, the oversleeping of a person, the anxiety, increase in heart rate and the related flight or flight responses will be simultaneous.

Verified Answer

J-L theory:

Increased time of sleeping in an exam leads to rise in heart rate, blood pressure, breakdown of glycogen and sweating.


C-B theory:

The conditions like increase in heart rate, sweating, sweating and anxiety occur simultaneously with more time slept in an exam. 


Anxiety is felt prior to the rise in the heart rate. 

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