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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.
Sunshine recorder Sunshine recorder (Figure shown below) measures the duration of sunshine. The recorder consists essentially of a glass sphere of about 10 cm in diameter mount
List a few shortcomings of native starches which make it unacceptable in certain food applications. Lack of free-flowing properties of water repellence of the starch granules,
what is the model of tolerence mpdel of sucession
Q. What are the functions of the osseous tissue? The main functions of the osseous tissue that are to provide structural rigidity to the body and to delineate the spatial posit
Define Fortification to prevention of iron deficiency anaemia? Food fortification is one of the alternatives that ensure consumption of the nutrient regularly in daily diet. Fo
Rigs Pattern: The nursing unit has been divided into small cubicles for 1,2,4 and 6 beds. The beds are arranged parallel to the longitudinal wall. The pattern was first bu
Potassium, Calcium, Iron and Magnesium - Microorganism? These are supplied by inorganic salts and exist in the cell as cations. These perform various functions in the cell like
is rhinobatis poisonous?
Why is there little or no grass in the forest? 1. Because of the presence of the bushy trees close together in the forest, sunlight does not penetrate simply to the ground. Thi
Amoeboid Protozoan Amoeboid protozoan are distinguished by the presence of flowing extensions of their body known as pseudopodia. These are used for feeding and locomotion. Th
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