Research on thousands of volunteers indicates that sleep can be divided into four stages. The transition from wakefulness to sleep occurs with the onset of stage 1 sleep. During this stage, a mixed but relatively slow, low-voltage EEG pattern emerges. Breathing slows, muscle tone decreases and the body generally relaxes. At this point, individuals can still be readily awakened by external stimuli. If they are not awakened they move to stage 2. During this stage the brain emits occasional short bursts of rapid, high-voltage waves known as sleep spindles. During this stage, sleepers are much more difficult to awaken than they were during stage 1. Stage 2 is followed by stage 3 and 4 which are marked by the increasing appearance of slow, high voltage delta waves and by a further slowing of all major bodily functions.
What is extra sensory perception? Explain.
Normally, Perception depends on the stimulation of sensory receptors by various kinds of energy. Perceptions independent of sensory stimulations are called extrasensory perceptions (ESP). The field that studies ESP is called parapsychology (Para means ‘besides’). The name itself indicates its failure to gain widespread acceptance within mainstream of psychology. Surveys reveal that a considerable percentage of population believe in ESPs. Moreover, leading Journals in psychology, philosophy and medicine periodically publish articles on paranormal abilities.
Mention the parts and functions of a neuron.
Define psychology and what are the goals of psychology?
Psychology can be defined as the “Scientific study of behavior and mental and cognitive processes”.
Psychology as a science has four goals:
a. Describing and measuring behaviour
b. predicting behavior
c. controlling and modifying behavior, and ultimately
d. explaining behavior
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