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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.
Plants are supplied with adequate amount of phosphorus Phosphorus has also been associated with early maturity of crops particularly the cereals. Its shortage is accompanied by
True or false, adaptations are the result of finding the best or only solution to a given problem a species faces.
Explain the Bright Field Microscopes? Figure illustrates the compound bright field microscope. This is the most commonly used microscope in biology and microbiology courses. It
Major Criteria 1) Positive blood culture • Typical microorganism for infective endocarditis from two separate blood cultures Viridans streptococci, Streptococcus bovis, HAC
Explain about Bioactive materials Bioactive materials: Certain glasses, ceramics, and glass-ceramics that contain oxides of silicon, sodium, calcium and phosphorus (SiO 2 , Na
Define Dietary modifications in the diet of the elderly? Loss of teeth due to increased decay of teeth and gums is common in aged person. Fitting dentures may also make chewin
In phylum colenterata if tissues are present in the body of an organism then why organs are not present as group of tissues makes an organuestion..
Lipid Digestion Digestion of fats is also similar in both invertebrates and vertebrates. Lipases are the - enzymes that hydrolyse fats. A single lipase can catalyse many step
Define Fat requirements in human body? There is no change in fat digestibility at altitude of
(i) Effect on Human Health: Air pollution causes many respiratory problems in human being. (1) Dust, soot and smog causes several respiratory troubles such as bronc
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