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Question

Read each of the following two statements Assertion (A) and Reason (R) and indicate your answer using the codes given below :

Assertion (A) : Lesions of the amyqdala decrease people’s emotional responses.
Reason (R) : Memory of frightening event is poor in people with damaged amyqdala

Codes :

The correct answer is
Both (A) and (R) are true, but (R) is not the correct explanation of (A).

Analyzing Assertion (A): Amygdala and Emotional Responses

Assertion (A) states that lesions of the amygdala decrease people’s emotional responses. The amygdala is a key brain region involved in processing emotions, especially fear and threat detection. Research shows that damage to the amygdala often leads to a reduced ability to experience or express emotions, particularly negative ones like fear. Therefore, Assertion (A) is considered true.

Analyzing Reason (R): Amygdala and Fear Memory

Reason (R) states that memory of frightening events is poor in people with damaged amygdala. The amygdala plays a critical role in the formation and consolidation of emotional memories, particularly those related to fear. Damage to this area can impair the ability to create lasting memories of aversive or frightening experiences. Thus, Reason (R) is also considered true.

Evaluating the Explanation

The question asks if Reason (R) correctly explains Assertion (A).

  • The amygdala's role in emotional processing directly impacts immediate emotional responses. Damage impairs this processing, leading to decreased responses (supporting A).
  • The amygdala's role in memory consolidation impacts the storage of emotional experiences. Damage impairs memory formation (supporting R).
  • While related, the impaired memory formation (R) is not the direct cause of the reduced emotional response (A). The reduced emotional response stems from the impaired emotional processing capacity itself due to the lesion. The poor memory is a separate, though associated, consequence.

Therefore, both statements are true, but the poor memory is not the correct explanation for the decreased emotional response.

Conclusion

Based on the analysis, both Assertion (A) and Reason (R) are factually correct statements regarding the function of the amygdala. However, the reason (impaired fear memory) does not directly explain the assertion (decreased emotional responses). The decreased emotional response is a consequence of impaired emotional processing, while impaired memory is another consequence related to memory consolidation.

Correct Option: Both (A) and (R) are true, but (R) is not the correct explanation of (A).

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Important Questions from System Physiology Animal

  1. Which one of the following synaptic vesicles (as observed under transmission electron microscope) contains catecholamines?

  2. Blood hemostasis is the interplay of several intrinsic and extrinsic factors. Deficiency of some of the blood clotting factors and their clinical manifestations are listed below.

    Factors

    Manifestations

    A.

    V

    i.

    Hageman trait

    B.

    VII

    ii.

    Hypoconvertemia

    C.

    IX

    iii.

    Hemophilia B

    D.

    XII

    iv.

    Parahemophilia

    Which one of the following options represents all correct matches?

  3. Aldosterone is synthesized exclusively in zona glomerulosa due to the presence of _________ enzyme in addition to a dehydrogenase. 

  4. How much hemoglobin is present approximately in each normal human red blood cell? 

  5. The sensory nerve fibers (Column X) and the sensory receptors connected to different sensory nerves (Column Y) are given below.

    Column X

    Column Y

    Sensory nerve fibre

    Sensory receptor

    A.

    la

    i.

    Muscle spindle, flower spray ending

    B.

    Ib

    ii.

    Pain and cold receptor

    C.

    II

    iii.

    Muscle spindle, annulo-spiral ending

    D.

    III

    iv.

    Golgi tendon organ

    Which of the following options represents the correct match between column X and column Y?

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