The first-night effect may last more than one night

Bon, Olivier Le; Staner, Luc; Hoffmann, Guy; Dramaix, M.; Sebastian, I. San; Murphy, James R.; Kentos, M.; Pelc, Isidore; Linkowski, Paul

doi:10.1016/s0022-3956(01)00019-x

Cited by 197 publications

(112 citation statements)

References 23 publications

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“…The major factors responsible for this effect are the unfamiliar surroundings of the sleep laboratory and the subjects' lack of adaptation to the discomfort induced by electrodes, cables and instruments applied to their body [43,44]. Other factors influencing the magnitude of the FNE have been discussed and include the psychological effect of being the object of study [43,44,45,46] or personality traits, such as trait anxiety [47,48,49] or even a placebo effect [50]. The FNE can be quantitatively measured even when the subjects do not report subjective sleep quality degradation [47,51].…”

Section: Environmental Conditionsmentioning

confidence: 99%

“…Generally, the first night is consistently characterised by increased REM sleep latency and a reduction in the amount of time spent in REM, although increased sleep onset latency, shorter total sleep time and hence lower overall sleep efficiency are often also observed [43,44,45,47,52]. In addition, the partial REM sleep deprivation in the first night may likely have consequences for the second night (REM rebound) [53].…”

Section: Environmental Conditionsmentioning

confidence: 99%

“…While some ambulatory studies suggest that conducting home recording eliminates or reduces the FNE [71,72,73], others conducted with healthy participants [45], elderly individuals [74,75] and patients [47] conclude that adaptation effects are still observed. Consequently, as home-based ambulatory PSG does not prevent a possible FNE, such study settings should always include an adaptation night.…”

Section: Environmental Conditionsmentioning

confidence: 99%

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Guidelines for the Recording and Evaluation of Pharmaco-Sleep Studies in Man: The International Pharmaco-EEG Society (IPEG)

Jobert¹,

Wilson

Roth

et al. 2013

Neuropsychobiology

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The International Pharmaco-EEG Society (IPEG) presents guidelines summarising the requirements for the recording and computerised evaluation of pharmaco-sleep data in man. Over the past years, technical and data-processing methods have advanced steadily, thus enhancing data quality and expanding the palette of sleep assessment tools that can be used to investigate the activity of drugs on the central nervous system (CNS), determine the time course of effects and pharmacodynamic properties of novel therapeutics, hence enabling the study of the pharmacokinetic/pharmacodynamic relationship, and evaluate the CNS penetration or toxicity of compounds. However, despite the presence of robust guidelines on the scoring of polysomnography -recordings, a review of the literature reveals inconsistent -aspects in the operating procedures from one study to another. While this fact does not invalidate results, the lack of standardisation constitutes a regrettable shortcoming, especially in the context of drug development programmes. The present guidelines are intended to assist investigators, who are using pharmaco-sleep measures in clinical research, in an effort to provide clear and concise recommendations and thereby to standardise methodology and facilitate comparability of data across laboratories.

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Section: Environmental Conditionsmentioning

confidence: 99%

Section: Environmental Conditionsmentioning

confidence: 99%

Section: Environmental Conditionsmentioning

confidence: 99%

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Guidelines for the Recording and Evaluation of Pharmaco-Sleep Studies in Man: The International Pharmaco-EEG Society (IPEG)

Jobert¹,

Wilson

Roth

et al. 2013

Neuropsychobiology

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“…It is purported that multiple factors are responsible for these observations, including the equipment and the environment. 2 Furthermore, more recent evidence suggests these effects may extend beyond the first night. 2 The importance of sleep pertaining to health is increasingly recognised.…”

Section: Introductionmentioning

confidence: 99%

“…2 Furthermore, more recent evidence suggests these effects may extend beyond the first night. 2 The importance of sleep pertaining to health is increasingly recognised. Thus, establishing methods to accurately measure sleep, in the absence of a sleep laboratory, has been a recent focus.…”

Section: Introductionmentioning

confidence: 99%

Assessment for the possibility of a first night effect for wrist actigraphy in adolescents

2016

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ObjectivesEvidence of a ‘first night effect’ has been documented for polysomnography. The possibility of this has not been previously assessed in wrist actigraphy, yet may have important implications for the study design of future sleep research. We sought to examine potential evidence of a ‘first night effect’ for wrist actigraphy in adolescents across weekdays and weekend nights for multiple sleep outcomes.Design3-year prospective cohort study (Midlands Adolescent Schools Sleep Education Study).Setting8 secondary schools in the Midlands region of the UK.ParticipantsAdolescents (aged 11–13 years at baseline) were recruited to the study and were requested to wear a wrist actigraph for 7 consecutive days/nights at baseline and then annually for 2 years during the second term of the academic year.Primary outcome measuresWe compared multiple sleep outcomes (total sleep time, wake after sleep onset, sleep efficiency, sleep onset latency, number of awakenings, length of awakenings, sleep onset time) when the device was worn on a weekday and weekend and compared these to other nights to identify possible evidence of a ‘first night effect’ for wrist actigraphy.ResultsNo significant differences were found between any sleep outcomes when the first night of wrist actigraphy was on a weekday compared with other weekdays. When the first night was measured on a weekend (Friday), average total sleep time was significantly greater (486±5 min) compared with the second night (Saturday; 469±6 min), p=0.01.ConclusionsWe found no evidence to support a ‘first night effect’ for wrist actigraphy in our adolescent sample. The first night of actigraphy data should not be disregarded in future studies that deploy this technique to measure sleep over prolonged time periods.

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