Amygdala is an Prunus amygdalus - like structure present in the brain and is known to dally an important part in human emotion , specially the fear and anxiety , and its ’ several resulting behavior . In this article we will look at what happens when amygdala is damage .
What Is Amygdala?
Before we jump over to our implicated subject , let us first know briefly about what amygdala is . Amygdala come from the Latin - Greek word of honor , intend “ Almond ” . The name comes from the fact that this construction looks like an Prunus dulcis and it is found in the genius .
The amygdala in the human head is placed somewhat strategically at the dorsomedial part of the temporal lobe , anteriorly ( in the front ) of the Hippocampus and very close to the tail of the Caudate nucleus . It is placed near to the hypothalamus and also the brain stem .
Amygdala ranges from 1 atomic number 96 to 4 curium , average of about 1.8 cm , and has blanket connection with the brain . This includes , the neighbouring structures like hippocampus , basal ganglia , entorhinal cortex , brainstem , thalamus and hypothalamus . Amygdala is also link well with the limbic organisation and other associatory pallium , prefrontal cortex , and basal forebrain . Therefore , its input is known to institute a major core to the entire brain .
Amygdala is well known to play an authoritative part in human emotion , especially care and anxiety and its respective resulting behavior . foreplay of the amygdaloid nucleus in the human , produces a opinion of fear and ira . This is because , this structure is place near the brainstem , where the sympathetic pathway is locate , to raise all physiological reflexes when we are wild or frightened . aside from this , the extreme proximity of amygdala and hippocampus hold us to believe that amygdala has some form of memory functions too . And in fact , it has memory functions too . However , it is more towards the memory of producing anxiety and fear .
Amygdala is also crucial for sexual function by vomeronasal electronic organ - detected pheromones . Sex - come to hormone is secreted by the hypothalamus in respond to the amygdala . Moreover , amygdala , also has a role in the payoff system , where positive emotion is kindle .
What Happens If Amygdala Is Damaged?
Now , what happen if amygdala is damaged ? In eccentric of imp , the bilaterally symmetric ( both , there is one left and one right amygdala ) lesion of amygdala demonstrated that there is a massive step-down of fearfulness and aggressiveness and the monkeys became more friendly , sexually and also non - sexually towards other monkeys .
Then , what is the eccentric in mankind ? Same is the case here too . There is a decrease of fear and aggression in the individual if the amygdaloid nucleus gets damage . However , there is also something more to it . bilaterally symmetrical lesion of amygdala also cause the affected person to have an deflower ability to interpret worked up scene of facial verbal expression . A damage to the amygdaloid nucleus is link to autism . Amygdala has a possible family relationship with the social power of a human being , although more studies on this is required .
A typeface study has found that the terms to a woman ’s amygdala is not only associated with only a decrease in the experience of fright , but the absence of fear whole . However the study concluded that the woman showed a wide compass of all other emotion ; which suggest that the disabling effect of the harm to the amygdala is fix only to the experience of fear .
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