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Q. Global alteration of brain functioning - Sleep?
Sleep involves a global alteration of brain functioning, and occupies one third of our lives, The transition from waking to sleep is one of the most dramatic natural alterations in consciousness. Sleep is differentiated from waking state by reduction in neuronal responsiveness, inattention to sensory stimuli, and loss of consciousness. These two states differ fundamentally in most physiological parameters including the activity of a variety of key neurotransmitter systems.
Sleep Structure: Electroencephalogram (EEG) recordings reveal the two most basic states of sleep - REM (Rapid Eye Movement) sleep and NREM sleep. NREM comprises of four stages (Stages1 to 4). EEG pattern of wakeful state and different stages of sleep is explained further.
Active wakefulness: It is accompanied by low amplitude, high frequency beta waves. In relaxed wakefulness with eyes closed, the brain emits alpha waves. Alpha waves are low amplitude brain waves of about 8 to 13 cycles per second.
How do the repairing enzymes of the genetic system act? There are enzymes within the cells that detect errors or alterations in DNA molecules and start a repair of those errors
The best way to maintain quality of air and pollutant's emissions is by using less polluting fuels and processes. Following can be taken to control air pollution. Source correc
In many countries of Asia biomass contributes l argely as a source of primary energy. People in rural areas at the peripheries of forests, continue to collect fuel wood from adjace
Define the Properties of Fibre? The structural make up of fibre influences its properties which in turn affects the physiologic and metabolic roles. This is well-depicted in th
Habitat Conservation - Conservation of Wildlife Actually conservation means different things to different people. In the present context, conservation refers to the preservati
Q. Applications of genetic engineering? Applications of genetic engineering in different fields are: • Agriculture: Crops having larger yields, drought -and disease -resis
What is cDNA and what is its function and mechanism of action?
Is monoculture a system that contributes to great biological diversity of an ecosystem? Monoculture means that in a large area a single crop (only single species of plant) is c
Oral Route Paediatric Medications are prepared as Tablets (which can be crushed), powders, granules, mixtures, emulsions, elixirs and syrups. It is easier to persuade olde
wt is an air bladder and its function wt is catadromous and anadromus migration
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