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

Endomitosis, why and where endomitosis happen?

why and where endomitosis happen?

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

Tuning in on the stars, Tuning in on the Stars: The fact that stars e...

Tuning in on the Stars: The fact that stars emit radiowaves was discovered accidentally in  1932  by  a young engineer Karl Jansky. He was trying to find the source of  noise

Moisture from breathing, Moisture from breathing Moisture coming from b...

Moisture from breathing Moisture coming from breathing might be shown by blowing on a cool mirror or into a cool glass or bottle.

What is pedology, What is Pedology Pedology is concerned with the study...

What is Pedology Pedology is concerned with the study of the composition, distribution and formation of soils as it occurs in nature.  On the other hand edaphology is the study

Explain the process of filtration - formation of urine, Explain the Process...

Explain the Process of Filtration - Formation of Urine The kidneys form urine in three phases: simple filtration, selective re-absorption and secretion. Let us begin with the p

Describe about the term - inorganic phosphorus, Describe about the term - ...

Describe about the term - inorganic  phosphorus The large quantity of carbon dioxide evolved during organic matter decomposition is thought to be important to the release of ce

Friction, essay on friction is a necessary evil

essay on friction is a necessary evil

Explain agglutination - antigen-antibody interaction, Explain Agglutination...

Explain Agglutination - Detection of Antigen-Antibody Interaction Agglutination - If Ag is present on the surface of cells, or can be made to coat these surfaces of cells, thes

Explain immunoglobulin m - classification of antibodies, Immunoglobulin M -...

Immunoglobulin M - Classification of Antibodies Protects against bacteria, gives an early immune response, present on surface of lymphocytes. It stays confined to blood stream

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