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

What is aldose-ketose isomerism, Aldose-ketose isomerism We  have  alre...

Aldose-ketose isomerism We  have  already  seen  that  in  a monosaccharide  either  an  aldehyde  (-€HO)  or  a ketone  (>C=O) group is present.  The former is called as aldos

What is rancidity, What is rancidity This results from  the  formation ...

What is rancidity This results from  the  formation  of  aldehyde due  to the  oxidation of unsaturated glycerides or by the liberation of fatty acids due to hydrolysis. In

Explain enzyme stabilization, Enzyme  stabilization Reducing the chances ...

Enzyme  stabilization Reducing the chances that an enzyme will  inactivate (in vivo or in  vitro) by changing the  environmental  conditions (such  as pH,  temperature,  concentra

Enviromental, what is the structure of the ecosystem

what is the structure of the ecosystem

Sense organ, when one moves from bright to dark place, chairs are not seen ...

when one moves from bright to dark place, chairs are not seen at ones. why?

Explain the types of failures that occur in operations, Question 1 It is t...

Question 1 It is the job of operations managers to convince the stakeholders that the investment in plant and equipment is going to enhance the value of the investments already he

Two plates in the lithosphere slide past each other, What is the name for t...

What is the name for the margin where two plates in the lithosphere slide past each other? Transform Fault Margins

Critical thinking., In hydraulic machines a liquid that has filled a pipe i...

In hydraulic machines a liquid that has filled a pipe is pushed at one end of the pipe. The liquid then pushes a machine part located at other end of the pipe. Why isn''t gas used

Lab animals, LAB ANIMALS : In this section, we shall deal with the importa...

LAB ANIMALS : In this section, we shall deal with the important aspects concerning lab animals. You are advised to be familiar with regulations concerning experiments on animals w

H, how is metal tyre fitted onthe wheel of bullock cart

how is metal tyre fitted onthe wheel of bullock cart

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