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

Scientific and technical achievements of bronze age, Scientific and Technic...

Scientific and Technical Achievements of Bronze Age:   The major technical advance  that accompanied the rise of cities was the discovery and use of metals, particularly coppe

Roche limit- photosphere, 1.Summarize the evidence supporting the theory th...

1.Summarize the evidence supporting the theory that the Cretaceous-Tertiary extinction, which includes the extinction of the dinosaurs, was precipitated to a significant degree by

Dating the past, Dating  the Past: Today, that  a particular  rock  i...

Dating  the Past: Today, that  a particular  rock  is a million ycars old, or a fossil is 50 thousand ycars old. For  instance, how do we estimate the duration of various geo

Concentrations of solutions, if 120g of a 6% sucrose solution are needed, w...

if 120g of a 6% sucrose solution are needed, what mass of sucrose is required to prepare the solution?

Science project, i dont know how to set up my science board

i dont know how to set up my science board

Define the amount of calcium in urine, Define the Amount of Calcium in Urin...

Define the Amount of Calcium in Urine Normally I00 to 300 mg of calcium is excreted in the urine daily. Urine calcium is low in intestinal malabsorption and rickets - a childho

Prevention of disease, Prevention of disease: Now that we know that inf...

Prevention of disease: Now that we know that infectious diseases are caused by microbes,  it should be possible to prevent diseases by controlling their transmission and proper

Explain the functions of gastric juice - antiseptic action, Explain the Fun...

Explain the Functions of Gastric Juice - Antiseptic Action Antiseptic action: Hydrochloric acid in the gastric juice acts as a barrier to the passage of certain microorganisms

Explain tidal volume and inspiratory reserve volume, Explain Tidal Volume a...

Explain Tidal Volume and Inspiratory Reserve Volume Tidal Volume (TV):   It is the volume of air that is taken in or given out during quiet breathing. The volume 1s about 500

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