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

Age related differences in erythropoiesis, Age Related Differences in Eryth...

Age Related Differences in Erythropoiesis 1. During intrauterine life, in the early embryo, erythropoiesis occurs in the mesoderm (the middle of the three germ layers of an emb

Systems view of life, Systems view of life: Evolution has given rise to...

Systems view of life: Evolution has given rise to various types of  life forms from single celled bacteria to organisms as complex as a human being. It may interest you to know

Explain the spinal nerves, Explain the Spinal Nerves As mentioned earli...

Explain the Spinal Nerves As mentioned earlier, there are 31 pairs of spinal nerves that leave the vertebral canal by passing through the intervertebral foramina formed by adja

Explain the methods of food processing, The methods of food processing by c...

The methods of food processing by covering the two major methods- thermal processing dehydration.  Food processing methods which include  freezing, microwave proces

Safety spectacles in personal protective devices, Safety spectacles : Safe...

Safety spectacles : Safety spectacles need to be used where there is the slightest risk of splashes of chemicals or fragments of dust, glass, etc. getting into the eyes.

Define age related changes in alimentary canal, Define age related changes ...

Define age related changes in Alimentary canal Advancement in ageing leads to loss of teeth. In this process, first the enamel changes then dentine and cement. Thus their masti

Name the groups of organs in digestive system, The digestive system is made...

The digestive system is made up of two groups of organs: Alimentary  tract, which  includes mouth, pharynx,  oesophagys,  stomach, small intestine,  large intestine, appendix

Hard and soft water in cleaning, Hard and soft water in cleaning Prepar...

Hard and soft water in cleaning Prepare two samples of dirty cloth. Wash one in soft water with soap unless it is clean. Wash the other cloth in hard water for the similar leng

Describe the process of a medical audit, Question 1 Discuss the issues wit...

Question 1 Discuss the issues with existing Health management information system in India Question 2 Explain the significance of health information systems in nursing educ

Bdp, describe the factors which decide the broad area of scientific activit...

describe the factors which decide the broad area of scientific activity?

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