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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.
What are the plant tropisms? Tropisms are the movements that caused by external stimulus. In Botany the studied plant tropisms are phototropism (tropism in response to light),
Q. Can Obesity causes the cardiovascular disease? As you know obesity or excessive weight is the primary cause of cardiovascular disease. It is an independent risk factor for h
what is the life cycle of a protozoa
Q. What is the life cycle of Trypanosoma cruzi? The Trypanosoma cruzi is a heteroxenous parasite that is it has an intermediate host, the triatomine bug, and a definitive host,
Iodine Iodine functions are essential components of the thyroid hormones thyroxine (T 4) and triiodothyronine (T3), which regulate the rate of energy metabolism. Absorbed iodi
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Nutrient Elements of Plants Let us first find out the chemical composition of plants and see which element nature has selected to support their healthy growth. Only then we wi
Why Capsulate Staining is Difficult? Capsule staining is difficult because capsular material is soluble in water and may be dislodged or removed during vigorous washing. Negati
Louping ill This is an infectious encephalomyelitis of sheep and man occurring during spring and summer when the vectors like ticks are active. It is reported from British Isl
What is frog central nervous system Consider Neuron B in the frog central nervous system whose plasma membrane has a newly discovered ligand-gated ionotropic receptor, named th
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