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

Explain monocytes - types of white blood cells, Explain Monocytes - Types o...

Explain Monocytes - Types of White Blood Cells They are motile and occasionally show phagocytic activity. They form only 5% of leukocytes, capable of providing more phagocytic

Human body, which two body systems control movement of digestive organs?

which two body systems control movement of digestive organs?

Astronomy, Describe the process of gas capture that helped to build the Jov...

Describe the process of gas capture that helped to build the Jovian planets?

Explain the functions of the kidney, Explain the Functions of the Kidney ...

Explain the Functions of the Kidney The functions of the kidneys, as you already know, are to form urine and to pass urine for excretion, maintain water and electrolyte balance

To show which types of soil hold water best, To show which types of soil ho...

To show which types of soil hold water best Tie cloth over the end of various lamp chimneys and then fill every one to within 8 cm of the top with dissimilar types of soil. Use

Explain the gastric phase - secretion of gastric juice, Explain the Gastric...

Explain the Gastric Phase - Mechanism of Secretion of Gastric Juice Another 45% of the gastric secretion is discharged in this phase. The mechanical presence of food in the ant

The difference between hard and soft water, The difference between hard and...

The difference between hard and soft water Collect some hard water from a stream(or make some as defined in the next experiment). Also secure some soft water like as rain wate

Define the utilization of glucose - carbohydrates, Define the Utilization o...

Define the Utilization of Glucose - Carbohydrates A constant blood glucose level is maintained so that all body tissues have a constant supply. Excess glucose is converted to g

Social science, discuss the importance of society and culture to existence ...

discuss the importance of society and culture to existence of man .

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