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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.
Vitamin B 1 (Thiamine hydrochloride) a) Thiamine hydrochloride is a white, crystalline powder, slightly hygroscopic, of an odour resembling yeast and of bitter to taste. b)
What is Active site Active site : The site on the surface of an enzyme to which substrate or substrates bind.
Indications for Surgery : Patients usually present with fatigue, dyspnoea and ventricular arrhythmias. If they have additional tricuspid regurgitation, pulmonary valve replacement
A person has swelling on the front of his neck. Name the disease he is suffering from and the cause of it.
PKU is a recessive disorder. Suppose two people who were heterozygous for PKU married and had a child. What is the probability that the child will have PKU?
Q. What are the structures that form the external ear? What is its function? The internal ear comprises the auricle or pinna and the auditory canal its function is to conduct t
FUNCTIONS OF CELL WALL 1. Provides shape to plant cell rigidity to cells. 2. Functions as a barrier to entry of pathogens into the cells. 3. Provides pr
Q. What is the difference between cellular specific immune response and humoral specific immune response? Humoral specific immune response is the defense system by means of, an
Bovine rotavirus diarrhoea The bovine rotavirus is a RNA virus with 11 segments of double stranded RNA belonging to the genus Rotavirus in the family Reoviridae. Rotaviruses c
MCNAUGHTON'S CASE AND LAW: In 1843, McNaughton shot and killed Sir Robert Peel's secretary Edward -Drymmond. It was shown that McNaughton suffered from a number of delusi
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