Michal Šmotek

• PsyD (Clinical Psychology) Ph.D. (Neuroscience)
• Clinical Psychologist at Institute of Neuropsychiatric Care (INEP), Prague, Czech Republic

The aim of this study was to explore the effects of 20 min of narrow-bandwidth light exposure of different wavelengths (455, 508, and 629 nm, with irradiance of 14 µW/cm2) on various neuropsychological and neurophysiological parameters of vigilance in healthy volunteers and to provide further evidence of the behavioral (subjective sleepiness, react...

The objective of the present study was to assess the effect of combining CBT-I with wearing blue-light blocking glasses 90 min prior to bedtime on subjective and objective sleep parameters and daily symptoms (anxiety, depression, hyperarousal). Thirty patients (mean age 48.1 ± 16.13 years, range 21–71, 15 men/15 women) completed a CBT-I group thera...

The aim of the study was to examine subjective sleep quality in a population of healthy volunteers and its association with evening and night light exposure to screens of media devices. A total of 693 participants (mean age 31.2±11.4 years, 159 men, and 538 women) completed an online questionnaire battery consisting of several sleep-related questi...

Serotonergic agonist psilocybin is a psychedelic with antidepressant potential. Sleep may interact with psilocybin’s antidepressant properties like other antidepressant drugs via induction of neuroplasticity. The main aim of the study was to evaluate the effect of psilocybin on sleep architecture on the night after psilocybin administration. Regard...

The article summarizes the results of an EEG validation study following the proposal of a methodology for identification and monitoring of air traffic controllers' fatigue level based on layered-voice analysis (LVA) described in the initial study (Kouba et al., 2020). 10 licensed air traffic controllers from APP Prague participated in the experimen...

Background: Since the discovery of ipRGCs (intrinsic photosensitive retinal ganglion cells) in the retina, new research possibilities for studying the effects of light on the regulation of various behavioral and physiological functions that are independent of image formation arose. As ipRGCs are most sensitive to light of short wavelengths (460-480...

The article deals with the proposal of a methodology for identification and monitoring of traffic operators´ fatigue level, with focus on the air traffic controllers. Many scientific methods of fatigue detection are not applicable in the traffic operators´ environment due to significant disruption of the normal traffic operators´ comfort. Research...

Although patients with insomnia often show a discrepancy between self‐reported and objective sleep parameters, the role of and change in this phenomenon during treatment remain unclear. The present study aimed to assess the effect of cognitive behavioural therapy for insomnia on subjective and objective sleep discrepancy of total sleep time, sleep‐...

Introduction: Insomnia is one of the most frequent sleep disorders, affecting up to 30% of the adult population, with CBT-I being considered one of the most effective methods for chronic insomnia. Small to none attention is, however, paid to the “light hygiene” – a set of rules and recommendations to mitigate the negative impact of evening/night sc...

Introduction: The study investigates the association between circadian phenotype (CP), its stability (interdaily stability - IS) and physical activity (PA) in a weight loss (WL) programme. Methods: Seventy-five women in WL conservative treatment (BMI ≥ 25 kg/m2) were measured (for about 3 months in between 2016 and 2018) by actigraphy. Results:...

Background: Cognitive behavioral therapy is one of the most effective treatment for insomnia disorder. However, there is still a certain percentage of patients who do not response to this treatment. Moreover, there is no clear evidence that the CBT for insomnia (CBT-I) has an effect on objective sleep parameters. Further research is needed to exam...

Recent studies have shown a significant association between increased body weight (especially obesity) and the circadian setting – chronotype – as well as with living in accordance with the internal clock. The aim of this study was to explore the association between chronotype, social jet-lag (SJL), obesity and subjectively perceived sleep quality....

Introduction: Since the discovery of a novel photoreceptor cell, ipRGC in the retina, it began to emerge that the eye performs a dual role in detecting light for a range of behavioral and physiological (non-image forming, NIF) responses that are distinct from the classical image-forming function mediated by rods and cones. The ipRGCs consist of dif...

Light is considered one of the most important factors influencing circadian system in humans. Synchronizing effects of light depend on the accuracy of timing, intensity, or duration of light stimulus and on its wavelength. Biological clock located in the suprachiasmatic nucleus is set not only by signals from rods and cones but also through an inpu...

Light is considered one of the most important factors influencing circadian system in humans. Synchronizing effects of light depend on the accuracy of timing, intensity, or duration of light stimulus and on its wavelength. Biological clock located in the suprachiasmatic nucleus is set not only by signals from rods and cones but also through an inpu...

Sleep and circadian rhythmicity play a highly active and substantial role in cognition. One of the important roles of sleep is the process of consolidation of memories via hippocampo-cortical interplay. Recent research shows how sleep rhythms may contribute to memory enhancement in both healthy and diseased brain. Could sleep itself be considered a...

Cieľom článku je predstaviť u nás doposiaľ neznámy Bostonský kvalitatívny skórovací systém pre Reyov-Osterriethov test komplexnej figúry a možnosti jeho využitia v neuropsychologickej diagnostike kognitívneho deficitu.

The effects of direct current on central nervous system, today known as transcranial direct current stimulation is a method not entirely unknown among biological treatments in psychiatry. It is a perspective tool for the modulation of brain activity, applicable in the research of cortical representations of sensomotorical, cognitive and other funct...