Neurochemistry of attention, Biology

Assignment Help:

Neurochemistry of Attention

Different neurotransmitters systems are implicated in attention. Cholinergic, dopaminergic and serotonergic systems play major roles in neurochemical machinery of attention.

Acetylcholine: More than any other neurotransmitter, acetylcholine has been implicated in attentional processes. Blockage of Muscarinic receptors by a drug scopolamine (antagonist) results in impaired performance on a number of task measuring sustained attention. On the other hand Nicotine (agonist) administration improves task performance on the measures of sustained attention. Lesions of the basal forebrain cholinergic system result in impaired attentional function in rats and monkeys. Therefore it seems that increased level of acetylcholine is important for sustained attention.


Related Discussions:- Neurochemistry of attention

What is counsellor, Q. What is Counsellor? Counsellor is someone who gi...

Q. What is Counsellor? Counsellor is someone who gives advice about the problem. A counselor's role is to help patients help themselves. In our context  a counsellor is  a comm

What is the thigmotropism, What is the thigmotropism? The Thigmotropism...

What is the thigmotropism? The Thigmotropism is the growth or movement of the plant in response to mechanical stimuli (touch or physical contact), as when a plant grows around

Define historical example of ecosystems science, Define Historical example ...

Define Historical example of Ecosystems Science? Mathematical and statistical tools are central to enhancing our understanding of large-scale systems and contain, for instance,

Thorax and lungs, Thorax and Lungs: The  lungs, a pair of conical-shap...

Thorax and Lungs: The  lungs, a pair of conical-shaped organs lie  in  the  thoracic cavity, protected by the bony  thorax composed of the  sternum and ribs a interiorly and r

Establishment of suspension cultures, Establishment of Suspension Cultures ...

Establishment of Suspension Cultures A callus crumbles into smaller clumps and single cells in liquid medium by gentle agitation (100-120 rPM) on a shaker. Shaking the cultur

Food and diet, 3 main ways in which the body uses food

3 main ways in which the body uses food

What is the intracellular digestion, Q What is the intracellular digestion?...

Q What is the intracellular digestion? Cellular digestion or Intracellular digestion is the breaking in the interior of the cell of big molecules coming from outside or even fr

Define the drugs effects on excretion, Define the Drugs Effects on Excretio...

Define the Drugs Effects on Excretion? Use of certain drugs can influence the excretion of certain substances. For example, besides their intended increase in sodium excretion,

Assessment and management of aortic stenosis, Assessment   The severity...

Assessment   The severity of symptoms depend on degree of obstruction.  In case of severe obstruction,  ECG shows right ventricular or biventricular hypertrophy. Cardiac cathet

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