Forebrain , Science

Assignment Help:

Forebrain:

The largest part of  the brain that you  see in Fig. is the cerebrum. It consists of  two halves or hemispheres  joined  together by  a band of  nerve fibres. Interestingly the crossing over of nerve fibres here causes the right half  to control the actions.of  the left side of the body and vice versa. The outer surface of  the cerebrum is  the cerebral cortex.  It is often referred to as the  'grey matter' because of  its colour. It is profusely supplied with blood vessels. The cortex was explored in a very fascinating way, particularly by a Canadian neuro- surgeon, Wilder Penfield: Since 1900's it was known that the brain cpntained no pain :ceptors and.hence  it could be operated upon, without making the person unconscious: local anesthesia, the top of  the skull could be removed  like a cap to expose the cortex. Penfield did exactly this and he stimulated different parts of the cortex, one by one, by matching  them with an electric wire or probe. He was amazed to observe the reactions of the dtients. On touching one part of  the cortex with the probe, the patients could see, hear or nell or feel! Patients could revive old memories. Some reported hearing the sound of a articular song; one woman felt as if  her daughter was in  the room talking to her; another. erson could actually recollect the smell of  flowers! Stimulation of  other regions caused notor responses such as the movement of  an arm or leg.  

1649_Forebrain.png


Related Discussions:- Forebrain

Explain the history and milestones of the concept of blood, Explain the His...

Explain the History and Milestones of the Concept of Blood In this section, we will discuss about the historical development of the concept of blood and blood cells. This discu

Explain somatic mutation theory of ageing, Explain somatic mutation theory ...

Explain somatic mutation theory of ageing Random mutation makes the cells inefficient. An increase in the number of mefficient cells in an organ impairs their functioning. Rand

Useful instruction for stock verification and maintenance , Useful Instruct...

Useful Instruction : You should go through of LT-1 course before doing this exercise. This exercise is a mix of demonstration and hands on activities. Take the help of your counse

To show how soil is formed from rocks, To show how soil is formed from rock...

To show how soil is formed from rocks Carefully heat a piece of glass in a flame and then plunge it into cold water. The unexpected cooling of the glass causes it to contract u

Forest cover, Forest cover: An analysis of satellite imageries and ai...

Forest cover: An analysis of satellite imageries and air photos indicates that in  1982 about  1 I%of land area in India was thick forests and the remaining 3% degraded or th

Check-in sequences for treatment of the spillage site , Check-in Sequences ...

Check-in Sequences At the time of opening the lab, the following need to be kept in mind: 1.  Ensure that the door locks have not been tampered. If any tampering is detected

Anthropological evidence, Anthropological Evidence Modern humans aros...

Anthropological Evidence Modern humans arose at a time when the Earth was going through a very cold and icy period called the Ice Age, which began about 75,000 years ago and

Torque and equilibrium, equilibrium, Physics what is the effect of torque a...

equilibrium, Physics what is the effect of torque and equilibrium on taps, doors,handle bars and bicycles??

Sex, How are babys produced

How are babys produced

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