Estimation of Sleep Onset Latency Based on the Blood Pressure Regulatory Reﬂex Mechanism

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Estimation of Sleep Onset Latency Based on the Blood Pressure Regulatory Reﬂex Mechanism

Jung, Da Woon - Nama Orang; Hwang, Su Hwan - Nama Orang; Chung, Gih Sung - Nama Orang; Lee, Yu-Jin - Nama Orang; Jeong, Do-Un - Nama Orang; Park, Kwang Suk - Nama Orang;

Abstract—Sleep onset latency (SOL) is an objective indicator of sleepiness and is being used clinically as a diagnostic tool for sleep deprivation.Thisstudyproposesanewandlessintrusiveapproach toestimateSOLbasedonthebloodpressure(BP)regulatoryreﬂex mechanism.Wehypothesizedthatthearterialbaroreﬂex,onekind of reﬂex mechanism for BP regulation, maintains the toning-down effect sleep has on BP. The arterial baroreﬂex is strongly activated after the time of sleep onset in order to maintain the lowered BP by leading to an increase in heart beat interval (HBI). This observation suggests that the arterial baroreﬂex has a marked inﬂuence on the HBI control with the onset of sleep. As a result, a positive correlation is expected between ﬂuctuations of BP and those of subsequent HBI after sleep onset. To investigate our hypothesis, we determined the relationship between BP and HBI using the R– J and R–R intervals measured from an electrocardiogram and a ballistocardiogram.WeestimatedSOLusingthecorrelationcoefﬁcientscorrespondingtotherelationshipbetweenﬂuctuationsofthe R–J interval and those of the subsequent R–R interval. The SOLs of ten healthy subjects [age (mean ± SD): 28.72 ± 3.21 years] were estimated using our proposed method and compared with the polysomnography data. The mean absolute error was 0.25 ± 0.35 min, corresponding to a half epoch (15 s) on average. We expect our method will be applicable as a nonintrusive and automatic SOL estimation system that does not require the use of electroencephalogram sensors.

Index Terms—Arterial baroreﬂex, ballistocardiogram, electrocardiogram, sleep onset latency.

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Penerbit: : IEEE JOURNAL OF BIOMEDICAL AND HEALTH INFORMATICS., 2013
Deskripsi Fisik: IEEE JOURNAL OF BIOMEDICAL AND HEALTH INFORMATICS, VOL. 17, NO. 3, MAY 2013 p. 539-544
Bahasa: English
ISBN/ISSN: 2168-2194
Klasifikasi: NONE
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Subjek: TIDUR-ASPEK KESEHATAN
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Pernyataan Tanggungjawab: Da Woon Jung ... [et al.]

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Estimation of Sleep Onset Latency Based on the Blood Pressure Regulatory Reﬂex Mechanism

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