Biological basis of aggression, Science

Assignment Help:

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.  


Related Discussions:- Biological basis of aggression

Explain maintaining the ph balance, Explain maintaining the pH Balance ...

Explain maintaining the pH Balance You must be aware of the term pH. PH we know provides a measure on a scale from 0 to 14 of the acidity or alkalinity of a solution (where 7 i

Find the angle of incidence, a ray of light falls on a transparent slab of ...

a ray of light falls on a transparent slab of refractive index u.if the reflected and refracted rays are mutually perpendicular to each other,find the angle of incidence.

Technology in industry, Technology in industry: One aspect of  technolo...

Technology in industry: One aspect of  technology is that the latest scientific methods are used in prduction. This, in turn, depends on the availability of the-right type of s

Explain increase in sound wave pressure through middle ear, Explain Increas...

Explain Increase in Sound Wave Pressure through Middle Ear There are certain factors which contribute to an approximately eighty-fold increase in sound wave pressure through mi

Experiment of making a model of a simple flower, Experiment of Making a mod...

Experiment of Making a model of a simple flower By Using of modelling clay, coloured paper and toothpicks make 3D-dimensional models representing the parts of a typical flower.

Precautions in nonionising radiations, Precautions : The following precaut...

Precautions : The following precautions should be taken while using UV lamps: 1) TJV lamps must always be properly shielded. 2)Wear approved goggles when working with or clo

Define ishihara''s charts - colour blindness, Define Ishihara's Charts - Co...

Define Ishihara's Charts - Colour Blindness Colour blindness is often assessed using Ishihara's charts. If ever you visited an eye specialist, you too must have seen this chart

Define the sources of sound and their level of loudness, Define the Sources...

Define the Sources of sound and their level of loudness Let us now have a look at Table, where the various sources of sound, their level of loudness and its comparison to the f

Demonstrate the crystal structure of clays, Crystal Structure of Clays  ...

Crystal Structure of Clays  Most clay minerals have two types of basic structural units  - tetrahedral and octahedral.  The tetrahedral unit is 4- 4  SiO  in which silicon

Introduction to laws regulations and related issues, INTRODUCTION : This e...

INTRODUCTION : This exercise is based on here 'Laws and Regulations' of this course. What are we going to do in this exercise? - This might be the question arising in your mind. I

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd