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

Determine the depth of potential well - potential vanishes, 1.  The Lennard...

1.  The Lennard-Jones potential is given by Where A and B depend on the depth of the potential well and the distance at which potential vanishes. Draw the profile of thi

Six kingdom coloring worksheet, What protist changes shape constantly and f...

What protist changes shape constantly and flows around it''s food to engulf it

Sc, describe the factors which decide the broad area of scientific activity...

describe the factors which decide the broad area of scientific activity

Define the complement system, Define the Complement system The compleme...

Define the Complement system The complement system is a series ofproteins. There are only a handful of proteins in the complement system and they are floating freely in our blo

Experiment to show that air has weight, TO SHOW THAT AIR HAS WEIGHT Dri...

TO SHOW THAT AIR HAS WEIGHT Drive a thin nail by the exact centre of a long rod such as a metre stick or a yard stick. Balance the stick by resting the nail on the rims of two

Explain loop of henle - structures of a nephron, Explain Loop of Henle - St...

Explain Loop of Henle - Structures of a Nephron Loop of Henle: The Loop of Henle is a long U-shaped part of the renal tubule, extending through the medulla from the end of the

Personal sensitivity- hygiene, Personal sensitivity : There are other dang...

Personal sensitivity : There are other dangers from substances which are not so common. e.g. mutagens , but one aspect we have not mentioned involves you. The eyes, lungs and skin

Determine the most important soil animals, Explain why earthworms are said ...

Explain why earthworms are said to be the most important soil animals. Earthworms ingest organic matter as well as soil where they mix, granulate and excrete to increase stabil

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

Explain the medulla oblongata, Explain the Medulla Oblongata The medull...

Explain the Medulla Oblongata The medulla extends from the pons above and is continuous with the spinal cord below as can be seen in Figure. It is about 2.5 cm long shaped like

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