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 the dichromates or mild colour blindness, Explain the Dichromates o...

Explain the Dichromates or Mild Colour Blindness A dichromate individual possesses only two cone pigments. Lack of the red pigment, called protanopia, makes distinguishing of t

K-means clustering, 1. Apply the k-means clustering to the following points...

1. Apply the k-means clustering to the following points in R4: (4:1, 3:6, 4:8, 5:5) (7:4, 3:0, 3:2, 6:1) (3:7, 4:9, 6:5, 6:1) (5:1, 5:6, 4:3, 5:4) (3:3, 4:0, 4:3, 5:

The earths iterior, Ask question how many years that our earth survived?#Mi...

Ask question how many years that our earth survived?#Minimum 100 words accepted#

Explain the control of salivary secretion, Explain the Control of Salivary ...

Explain the Control of Salivary Secretion The autonomic control of saliva secretion occurs in two ways, as unconditioned and conditioned reflex. What are these? Let's find out.

When a steep mountain stream flows abruptly on a flat plain, Which will mos...

Which will most likely form when a steep mountain stream flows abruptly onto a flat plain alluvial fan

Dental clinic-office business manager, Dental Clinic Case Study A clin...

Dental Clinic Case Study A clinic with three dentists and several dental hygienists needed a system to help administer patient records. This system keeps patient details and m

Estimate the moisture content and density, 1. The composition of solid wast...

1. The composition of solid waste from a residential community is as follows: Component Percent by weight Combustibles ---

Explain the term liming - decreasing soil acidity, Explain the term Liming ...

Explain the term Liming - Decreasing Soil Acidity Acid soils can be managed in two ways, viz. either by growing crops suitable for particular soil pH or by treating the soils w

What is soil aeration, What is Soil Aeration Whatever may be the struct...

What is Soil Aeration Whatever may be the structure of aggregate, it introduces pores in the soils. These pores are filled by air and/or water and have a role in the plant grow

Explain decarboxylation, Decarboxylation:   Amino  acids  undergo  decarbox...

Decarboxylation:   Amino  acids  undergo  decarboxylation reaction, enzymatically or by  treatment with  heat,  acid  or alkali (barium hydroxide)  to form the corresponding amines

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