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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.
Definition of old age? The exact timing of the onset of the ageing process cannot be ascertained because the effect of age varies among different individuals. However, the chr
Phases of Ovarian Cycle In non-mammalian vertebrates the ovarian cycle consists of the following phase; Pre breeding phase Breeding phase and Post breedin
Explain about the Pharmaceutical Management? A person with BMI 30 and above may require pharmaceutical management in addition to dietary and lifestyle modifications. It may als
Explain the Burden of Hypertension in heart diseases ? Since 1942, there have been several small and large population-based studies on Hypertension. A ineta-analysis showed an
Amoebae - Protozoan Amoebae may be naked or enclosed in tests or shells. The marine, freshwater and parasitic naked amoebae have large commonly tubular lobopodia or fine strap
Explain Precautions for Morphological Study of Fungi? 1. Use sterile forcep and needles for slide culture technique. 2. Aseptic conditions should be maintained. 3. Caref
What are the physical properties of Tear Film? Physical Properties of Tear Film: The tear film is a three-layered structure as given below: 1) Outermost Layer: Lipid Layer
Breifly describe the Menstrual Cycle? Each month during a female's reproductive years, the hypothalamus secretes a hormone that stimulates the anterior lobe of the pituitary gl
Explain what is Enzymes? Enzymes are organic substances that speed up, or catalyze, a chemical reaction. At a given temperature, molecules have varying amounts of energy, and
What must be the basal clade?
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