Word: sleeps
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Dates: during 1980-1989
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Hobson, who first carried out his electrode experiments in 1977, says these initial studies led to impressive results. "We began to map activity of the cells during sleep and came up with a now much discussed model...
Hobson and his colleague, Robert McCarley, say they found the brain appears to contain two populations of neurons, which are cells specialized for transmitting sensory information, and each type of neuron interacts with the sleep process in different ways...
...learned that some neural cells had a preference for being 'on' [processing hormones] during awake time, and some were always 'on' during sleep. But some of the 'awake' cells turn 'on' while in REM sleep," he says...
...What we began to notice was that there was an [activation of some of the] neurons during sleep, perhaps causing REM," he says...
Hobson and McCarley, who are both associated with the Department of Psychiatry at the Medical School, also tried to add to their dream model by analyzing the chemicals processed in the brain during REM sleep and then studying differences in the way various hormones direct sleeping versus waking activities...