Biological basis of aggression, Science

Biological Basis of Aggression:

Studies show that mild electrical stimulation of  a specific region of the hypothalamus - produces aggressive behaviour  in animals. When a cat's  hypothalamus was stimulated by implanting electrodes in  the brain and passing an electric current, it's hair stood on end; it hissed and arched it's back and would strike at anything that was placed in its cage. 

In  higher mammals like monkeys this instinctive pattern  is not observed. Their behaviour was seen to be more controlled by  the cerebral cortex rather than mere stimulation of the hypothalamus. The hypothythus may  send a message  to the cerebral cortex that its aggressive centres have bcen stimulated, the cortex then chooses the response considering what is going on in the environment, and what has been  stored in  the memory from past experiences. 

We  too have centres in  thc brain that can make us behave aggressively, but thefactivation  is under cognitive control. Some brain damaged persons may react to stimulation with aggressive behaviour, which would not elicit any response from normal persons. In such cases, it was found  that  the cerebral cortex was the damaged area ot  the brain. In normal persons. we can say  that  aggressive hehaviour  is determined largkly by social influences and personal experiences.  

Posted Date: 9/28/2012 9:08:15 AM | Location : United States







Related Discussions:- Biological basis of aggression, Assignment Help, Ask Question on Biological basis of aggression, Get Answer, Expert's Help, Biological basis of aggression Discussions

Write discussion on Biological basis of aggression
Your posts are moderated
Related Questions
Explain Cephalic Phase or Neural Phase 45% of the total gastric secretion is discharged in this phase. The flow of juice occurs before food reaches the stomach. Sight of food,

#question.find the specific gravity of blood lymph and water.?

explain reoroductive system of housefly

who is the first scientist

ACTIVITY 1 TO CALCULATE CURRENT DRAWN BY THE GIVEN APPLIANCES AND SUGGEST PROPER FUSE RATING AND PLUG TYPE Here , you hence learnt how to calculate the current drawn by an


Transport: River Valley civilisations were characterised by  settlements along the rivers and growth of cities which needed, among.other  things, stones and wood from distant

State the harmul effects of Acidity of soil Acidity of soil may have harmful effects on plants due to the effect on enzymatic changes, reduced availability of nutrients like c


Explain the functions of Multicellular Organism Multicellular organisms are specialized quite similar to a team that does a lot of work efficiently as compared to a single pers