Sensory Gating In Primary Insomnia

European Journal of Neuroscience European Journal of Neuroscience, Vol. 31, pp. 21122121, 2010 doi:10.1111/j.1460-9568.2010.07237.x cognitive NEUROSCIENCE Sensory gating in master(a) insomnia Ilana S. Hairston,1,2 Lisa S. Talbot,2 Polina Eidelman,2 June Gruber2,3 and Allison G. Harvey2 Psychiatry Department, Addiction explore Center, University of Michigan, Rachel Upjohn Bldg, 4250 Plymouth Rd, Ann Arbor, MI 48109 5740, USA 2 psychological science Department, University of California, Berkeley, CA, USA 3 Psychology Department, Yale University, New Haven, CT, USA Keywords: event-related potentials, human, K-complex, sensory(prenominal) processing, spindles 1 Abstract Although foregoing interrogation indicates that sleep architecture is largely intact in primordial insomnia (PI), the spectral content of the sleeping electroencephalographic stick to and measures of head metabolism suggest that individuals with PI are physiologically more aroused than fair sle epers. Such observations imply that individuals with PI may not experience the entire deactivation of sensory and cognitive processing, resulting in reduced ?ltering of external sensory learning during sleep.

To campaign this hypothesis, gating of sensory information during sleep was tested in participants with primary insomnia (n = 18) and good sleepers (n = 20). Sensory gating was operationally de?ned as (i) the dissimilitude in magnitude of elicited response potentials elicited by pairs of clicks presented during awake and Stage II sleep, and (ii) the number of K complexes evoked by the same auditory stimulus. During wake the groups did not dissent in magnitude of sensory gating. During sleep, sensory gating of the N350 com! ponent was washy and only diminished in participants with insomnia. P450, which occurred only during sleep, was strongly gated in good sleepers, and less so in participants with insomnia. Additionally, participants with insomnia showed no stimulus-related add in K complexes. Thus, PI is potentially...If you want to get a full essay, order it on our website: OrderEssay.net

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