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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.
State in brief about the nuclear DNA The nuclear DNA is distributed between two or more chromosomes, the number of which varies among different eukaryotes, and is characterist
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Define Nutritional Requirements and Recommended Allowances for Proteins and Amino Acids? The FAO/WHO Committee (1973) expressed the protein requirements in terms of egg or milk
What are the near point and the far point of the vision? The near point is the closest distance among an object and the eye that makes possible the formed image to be focused,
Explain about Ridge mapping Ridge relationship is also critical especially in cases with multiple implants and fixed prosthesis, which is an advanced treatment procedure. But,
Contrast sense Sense of contrast is the ability to perceive slight changes in luminance between regions which are not separated by definite borders. This is as important as to
what are chordates
in sericulture industry do which stages of silkworm weaver buy? why do they do so?
What is the main theory opposed to evolution? The major theory that opposes the evolution theory on the description of how species emerged (phylogenesis) is fixism.
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