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

Define hospital health information system, Question 1 Define Hospital h...

Question 1 Define Hospital health information system. Explain its components. 2 Computerized medical information system allows more time to professionals for patient care. Expl

How the acid/base balance is maintained in an acid diet, How the Acid/Base ...

How the Acid/Base Balance is maintained in an Acid Diet? Let us first see how the acid/base balance is maintained in an acid diet. The sequence of steps involved includes: 1

.metals, Disadvantages of cold working metals (point form pliz)

Disadvantages of cold working metals (point form pliz)

Sea water, why sea water have high salinity compared with pond water

why sea water have high salinity compared with pond water

Explain the composition and functions of gastric juice, Explain the Composi...

Explain the Composition and Functions of Gastric Juice In resting condition, the secretion of gastric juice is little in amount and is about 10- 15 ml. After taking each meal,

The effect of soap on surface tension, The effect of soap on surface tensio...

The effect of soap on surface tension Select a large plate and rinse it unless you are sure that it is very clean. Fill the plate with cold water and let it stand for a time on

Explain niacin (vitamin b3), Niacin (vitamin B3) Though niacin or nicot...

Niacin (vitamin B3) Though niacin or nicotinic acid has been known  to the organic chemists  since  1867 and Funk isolated  it from yeast and rice polishing in order to identif

Types of diseases, Types of Diseases As we  have indicated above. the...

Types of Diseases As we  have indicated above. there are diseases,that  a person is born with, for example, a baby may have a defective heart at the time of its birth. Then t

Explain what is infective endocaditis, Explain what is INFECTIVE ENDOCADITI...

Explain what is INFECTIVE ENDOCADITIS ? Infective endocarditis could occur on-native valve - native valve endocarditis (NVE) or on a prosthetic valve (Prosthetic Valve Endocard

A&P, Most of the plasma is composed of?

Most of the plasma is composed of?

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