Explain neurochemical process, Biology

Assignment Help:

Alertness and sleep are dependent on the activity of the brain as a whole, although different levels of consciousness are determined primarily by areas of the brain stem. A key anatomical structure in the regulation of waking and sleeping, (and thus consciousness), is the reticular formation, located in the brain stem. It is a highly complex interlacing network of fiber bundles. Neuro chemically, there is a great diversity of neurotransmitters present: serotonin, mainly from the mid-line raphe nuclei; noradrenaline from the locus coeruleus; acetylcholine from pedunculopontine nuclei with also peptidergic and dopaminergic components.

The alterations in the activity of these neurotransmitters either triggers or accompany the onset of natural sleep and distinguish slow wave or non-REM from REM sleep thus providing one of the most compelling arguments in favour of chemical neurotransmission being specifically involved in mechanisms of conscious awareness.

Pharmacological manipulations of these neurotransmitters provide evidence for the role of neuro chemical processes in consciousness. In this context it is important to understand that there are two categories of drugs used to vary the level of neurotransmitters.


Related Discussions:- Explain neurochemical process

Describe the patent ductus arteriosus, Describe the Patent Ductus Arteriosu...

Describe the Patent Ductus Arteriosus? It is the persistence of normal fetal channel connecting the aorta and pulmonary artery. It accounts for 5-10 per cent of all CHDs. Funct

Explain the female reproductive system, Explain the Female Reproductive Sys...

Explain the Female Reproductive System? The female reproductive system consists of the primary sex organs, the ovaries, and the accessory organs necessary to effect fertilizati

ANIMAL COMMUNICATION, what is the excitation threshold of a neuron?how does...

what is the excitation threshold of a neuron?how does this threshold relate to the all or nothing rule of neural transmission

Explain about single cell proteins, Single Cell Proteins (SCP)  The t...

Single Cell Proteins (SCP)  The term SCP was coined by Prof. Caroll Wilson (MIT) in 1966. It means the proteins obtained from microbial sources, i.e. algae, fungi, bacteria,

Photosynthesis and cellular respiration, what cell organelle does photosynt...

what cell organelle does photosynthesis take place in?

Ideal eia and measures and benefits of eia, An ideal EIA system would: ...

An ideal EIA system would: (i)     Apply to all projects that are expected to have significant environmental effects and address all impacts that are expected to occur due to t

Explain factors influencing lipid oxidation, Factors Influencing Lipid Oxid...

Factors Influencing Lipid Oxidation  Food lipids contain a variety of fatty acids that differ in chemical and physical properties and also in their susceptibility to oxidation.

Safety measures in drug administration, introduction of safety measures of ...

introduction of safety measures of drug administration

What happens within the cell in the second interface period, What are the e...

What are the events that mark the beginning and the end of the second interphase period? What happens in the cell in this period? The second interphase period is the S. It begi

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