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

Emergence of zoology , Zoology: The domestication of animals  like hors...

Zoology: The domestication of animals  like horses and elephants and their use in warfare necessitated the study of their anatomy and physiology. A survey of Vedic literature h

Explain the oxygen toxicity - histotoxic hypoxia, Explain the Oxygen toxici...

Explain the Oxygen toxicity - Histotoxic Hypoxia Exposure to oxygen at increased pressure can produce a marked increase in the dissolved oxygen in blood. It produces toxic effe

Explain causes of fever - immune system, Explain causes of Fever - Immune S...

Explain causes of Fever - Immune System We have seen that due to injury, cut or bite, the inflammatory response develop and this is localized or systemic. The localized respons

Eye injuries-first aid treatment of localized injuries, Eye Injuries : The...

Eye Injuries : The eyes are a particularly vulnerable part of your body. Safety glasses, goggles or a face shield are a 'must' for any experiment where there is any , danger of sp

Remove the wastes from the body - function of kidney, Remove the wastes fro...

Remove the wastes from the body - Function of Kidney Remove the wastes from the body. Many metabolic waste products such as urea, uric acid, ammonia and creatinine need to be f

Lab coats in personal protective devices, Lab coats : The lab coat should ...

Lab coats : The lab coat should fit well and should be buttoned up correctly at all times. Cotton lab coats are more suitable than those made from nylon as the former could absorb

Explain hypersecretion (hyperthyroidism) or thyrotoxicosis, Explain the Hyp...

Explain the Hypersecretion (Hyperthyroidism) Or Thyrotoxicosis This condition generally occurs in adult life. This is commonly caused by hyperplasia of the gland and is called

Plant cells, what is the plant cells roll?

what is the plant cells roll?

Mathh, #ghhytiquestion..

#ghhytiquestion..

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