Wallace Mendelson's Human Sleep: Research and Clinical Care PDF

By Wallace Mendelson

ISBN-10: 1461290686

ISBN-13: 9781461290681

ISBN-10: 1461319218

ISBN-13: 9781461319214

Sleep performs a huge function within the historical past of the neurosciences. On Easter Monday in 1920, Otto Loewi used to be woke up within the evening via a dream within which he conceived of neurotransmitters speaking around the synapse. He quick made notes, yet within the morning he couldn't comprehend his scribbles. the subsequent evening, the dream got here back. He wrote down his techniques extra conscientiously and, day after today, performed the an important test that introduced sleek neu­ rophysiology (Koelle, 1986). because the starting of the fashionable period of sleep examine within the Nineteen Fifties, we've got used the foundations of neurotransmission to discover the rules of sleep. with no resorting excessively to reviews on blind males and elephants, even if, it's reasonable to assert that the phenomena of sleep and waking could be approached from many views. between different issues, sleep is a method that may be defined electri­ cally, an event that thus far defies physiological measurements, and a social habit. during this ebook, i've got attempted to explain the body structure and pharmacology of sleep (Part I) and to narrate them to medical sleep problems (Part II). Having neither the ability nor the grandiosity of Rous­ seau, i've got made no try to write an encyclopedia of all that's recognized at the topic. relatively, i feel of this booklet as extra of a snap­ shot, giving an image of the place we're, and it truly is was hoping, a historical past of ways we obtained here.

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Other changes in the sleep EEG occur across the lifetime. , 1983), and the relation of amplitude and frequency of EEG waves changes. In general, the two are inversely related; that is, waves of lower frequency have higher amplitudes. , 1984). In terms of the two-process model of sleep regulation (to be discussed later in this chapter), the elderly may also display a reduced decay rate of process S (see p. 282) (Borbely, 1987). EFFECTS OF TEMPORAL VARIABLES ON SLEEP The duration of wakefulness before sleep is inversely related to the time it takes to fall alseep (sleep latency).

5HT -~~ 5HT~)) /. METHYSERGIDE FIGURE 2-1. Synthesis and degradation of serotonin, showing hypothesized actions of drugs discussed in the text. teral administration, and various clinical studies described subjective sleepiness (Fig. 2-2). A number of studies have examined its effects on nocturnal sleep (Table 2-1, Fig. 2-3). One (Schneider-Helmert, 1981) focused on the placebo nights immediately following L-tryptophan administration. In six of the studies, increased total sleep time was reported; in nine others, no effect was found.

This is referred to as the rebound phenomenon and may be seen following either REM (Clemes and Dement, 1967; Dement, Greenberg, and Klein, 1966a) or stage 4 (Agnew, Webb, and Williams, 1964) deprivation. Decreased REM or stage 4 sleep can be produced by mechanically arousing a subject whenever the polygraph indicates that the subject is entering that stage. When subjects are deprived of REM sleep in this manner of several nights, it 18 CHAPTER ONE is found that they must be aroused progressively more and more often.

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Human Sleep: Research and Clinical Care by Wallace Mendelson

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