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Gerard A. Kerkhof

Researcher at University of Amsterdam

Publications -  129
Citations -  6242

Gerard A. Kerkhof is an academic researcher from University of Amsterdam. The author has contributed to research in topics: Circadian rhythm & Melatonin. The author has an hindex of 39, co-authored 127 publications receiving 5717 citations. Previous affiliations of Gerard A. Kerkhof include Leiden University.

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Different melatonin rhythms and sleep-wake rhythms in patients on peritoneal dialysis, daytime hemodialysis and nocturnal hemodialysis

TL;DR: Although most sleep parameters were impaired in all three groups, conventional daytime dialysis patients had the worst sleep and Melatonin seems to play a subordinate role in the sleep-wake rhythm of automated peritoneal Dialysis patients.
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Chronic Insomnia and Daytime Functioning: An Ambulatory Assessment

TL;DR: In this paper, the relation between daytime functioning and chronic insomnia was investigated, and subjective well-being was found to be compromised in insomniacs as compared to control participants, but no differences in the level of performance were found.
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Event‐Related Potentials and Auditory Signal Detection: Their Diurnal Variation for Morning‐Type and Evening‐Type Subjects

TL;DR: The relationship between detection performance and various Event-Related Potential (ERP) components was investigated in an auditory threshold detection task and both the amplitude and the latency of the N115 and the P190 components intra-session decrement was found.
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Circadian variation in base rate measures of cardiac autonomic activity

TL;DR: Findings were interpreted as an indication for circadian endogenous parasympathetic modulation of cardiac activity that is mainly confounded by prior wakefulness that extends 24 h, while the sympathetic modulation is relatively uncoupled from the endogenous circadian drive and mainly influenced by prior activation.
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Assessment of response fluctuations in Parkinson's disease by ambulatory wrist activity monitoring.

TL;DR: Factor as simplicity and the potential to record unrestrained motor activity for several days continuously in all settings, make activity monitoring a welcomed acquisition in the assessment of response fluctuations in PD.