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Show Brain Wave Nave Studies Studiesof Studiesof of Sleep Process ProcessNew New YorkD York -D D - D fferent tlerent parts of the thebrain thebrain thebrain brain apparently go to sleep sep separately separately arately and to d fferent iferent degrees degreesDrs degreesDrs degreesDrs Drs H Davis and P A Davis of ofHarvard ofHarvard Harvard Med cal school and Drs DrsA DrsA DrsA A L Loomis E N Harvey and G GHobart GHobart GHobart Hobart of the Loomis laboratory at atTuxedo atTuxedo atTuxedo Tuxedo I\ I A } \ , IY \ Y have found in m bra n nwave nwave nwave wave studies reported to the Jour lour Journ1 lournil jourml n\1 n 1 nil ' \ Science Their studies also alsosuggest alsosuggest alsosuggest suggest that clues to the cause of ofmany ofmany ofmany many mental d seases ceases or abnormalit abnormalat abnormal It at es may be found in m stud es of ofthe ofthe ofthe the normal falling falImg asleep processFour processFour process processFour Four kinds kmds of brain bram waves or orelectr orelectr orelectr electr cal patterns appear during duringthe duringthe duringthe the go ng to sleep process they theyfound theyfound theyfound found First rust there is the state when whenthe whenthe whenthe the person is at rest but awakp awake awakpNext awakeNext awak"Next awakNext " Next folio v different dillerent kinds kmds of waves wavesm wavesin wavesin m in the dro ' vsy 'lay lay floating state A Asecond Asecond Asecond second intermediate mtermedlate state is char charactenzed charactertzed characterized actenzed actertzed by a still d different Ierent bram brain bramwave brainwave brainwave wave pattern and this merges mergesinto mergesinto mergesinto into the fourth pattern found m mreal mreal inreal real sleepOf sleepOf sleep sleepOf Of practical importance 'hey hey 'heypomt 'heypoint ' heypoint pomt point out is the fact that the pat pat- patterns patterns - terns of early sleep in m normal per persons persons persons sons are sink strIk ngly like those seen seenm seenin seenin m in some mentally sick or otherwise otherwiseabnormal otherwiseabnormal otherwiseabnormal abnormal persons Scientists mak making maklag making ing lag brain wave studies should not notbe notbe notbe be misled by the pattern of an un en unsuspected ensuspected unsuspected suspected dozing dozmg or floating Odtmg state stateInto stateinto stateinto Into diagnosing dlagnosmg a state of mental mentalabnormal mentalabnormal mentalabnormal abnormal tyThIs tyThis ty tyThis This similarity suggests that thatmany thatmany thatmany many abnormal mental condItIOns condItIOnsmay conditionsmay conditionsmay may depend on general mod1flca modafica mod1flcatlOns modafications modifleations tlOns tions of bra n function which are arefundamentally arefundamentally arefundamentally fundamentally like those of normal normalsleep normalsleep normalsleep sleep |