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

Erosion, where can glacier erosion occur?

where can glacier erosion occur?

Method for water immiscible-insoluble liquid-chemical wastes, For water imm...

For water immiscible/insoluble liquid/solid wastes which can be emulsified The spillage of water immiscible/insoluble liquid/solid could be scrubbed with brush in presence of

General features of first aid procedure, GENERAL FEATURES OF FIRST AID PROC...

GENERAL FEATURES OF FIRST AID PROCEDURE : The order of priorities in administering first aid is decided by the principal ,objective - to save life. Equally important, you must not

First aid treatment of localized injuries, FIRST AID TREATMENT OF LOCALIZED...

FIRST AID TREATMENT OF LOCALIZED INJURIES : So far, we have seen main life-saving functions of first aid. Let us discuss the task of controlling some other injuries so that they d

Erkinson develpomental theory, Maureen is a 50 year old married mother of t...

Maureen is a 50 year old married mother of three school age children. She works part-time at the local bank as a teller. She is going through menopause and is finding it very annoy

Explain change of posture - decreased cardiac output, Explain Change of pos...

Explain Change of posture - Decreased Cardiac Output When a person stands up from lying down posture, there is an immediate but transient fall in systolic blood pressure. This

Peripheral nervous system (pns), Peripheral nervous system (pns): Excep...

Peripheral nervous system (pns): Except for the  brain and the spinal cord,  the  rest of  the network  of  nerves and neurons is included in tha  peripheral nervous system, or

Osmosis, What is osmosis? What are Isotonic, Hyperonic and Hypotonic Slout...

What is osmosis? What are Isotonic, Hyperonic and Hypotonic Sloutions? What are the pracautions for the experiment of osmosis?

Physical Science, If more of substance b dissolves b has a higher what than...

If more of substance b dissolves b has a higher what than substance a

White lipped tree frog, how does reproduction help the white lipped tree fr...

how does reproduction help the white lipped tree frog survive

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