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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.
A wire 50.0 m long and 2.00 mm in diameter is connected to a source with a potential difference of 9.11 V, and the current is found to be 33.7 A. Assume a temperature of 20°C and,
Q. What is polyembryony? Polyembryony is the phenomenon in which a single embryo in its initial embryonic stage divides itself forming many new individuals of genetically ident
Possible causes of elevated triglycerides: - Obesity - Alcohol - Uncontrolled diabetes - Hypothyroidism - Genetic - Liver disease - Drugs Possible causes o
Mycotic diseases Mycotic (fungal) diseases of animals and birds are of considerable importance both from public health and economic point of view. The fungi responsible for an
Open Pulmonary Valvotonzy, I nfundibular Resection and Trans Annular Patch : The pulmonary annulus may be narrow based on pre-operative investigations and on measurement
HACCP Plan : The written document which is based upon the principles of HACCP and which delineates the procedures to be followed.
Microfilaments comprise of the proteins The microfilaments comprise of the proteins, actin and myosin, the same contractile proteins that are found in skeletal muscle cells. Si
Contamination of the Implant Body before Insertion The implant may be contaminated by manufacturing error, by the operator, from non titanium instrumentation and by the bacteri
PHYLUM ECHINODERMATA Definition and Indroduction Bilateral and deuterostomial eucoelomate eumetazoa with rough , tough and leathery skin due to a dermal skeleton o
Q. Metabolic Aberrations and Symptoms? We all know that insulin exerts an important role in the maintenance of normal blood glucose levels through its effect on the metabolism
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