Orsolya Szalárdy
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View article: Sleep Deprivation in Mice: Looking Beyond the Slow Wave Rebound
Sleep Deprivation in Mice: Looking Beyond the Slow Wave Rebound Open
Sleep is a fundamental process supporting the dynamic regulation of neural function. Emerging methods have proposed that the aperiodic components of brain signals (such as the spectral slope, spectral intercept, and spectral knee), in addi…
View article: Heartbeat‐related activity in the anterior thalamus differs between phasic and tonic REM sleep
Heartbeat‐related activity in the anterior thalamus differs between phasic and tonic REM sleep Open
Rapid eye movement (REM) sleep is a fundamental sleep state associated with diverse functions from elemental physiological processes to higher order neurocognitive functions. A growing body of research indicates that REM sleep with eye mov…
View article: Persistently increased post-stress activity of paraventricular thalamic neurons is essential for the emergence of stress-induced alterations in behaviour
Persistently increased post-stress activity of paraventricular thalamic neurons is essential for the emergence of stress-induced alterations in behaviour Open
A single exposure to a stressful event can result in enduring changes in behaviour. Long-term modifications in neuronal networks induced by stress are well explored but the initial steps leading to these alterations remain incompletely und…
View article: How the Brain Predicts Timing: Distinct Network Hubs for Predicting and Evaluating Auditory Sensory Events
How the Brain Predicts Timing: Distinct Network Hubs for Predicting and Evaluating Auditory Sensory Events Open
Temporal prediction enhances perceptual processing by aligning neural excitability with expected sensory events. While local oscillatory mechanisms are known to support timing, less is understood about how large-scale functional brain netw…
View article: Sleep Deprivation in Mice: Looking Beyond the Slow Wave Rebound
Sleep Deprivation in Mice: Looking Beyond the Slow Wave Rebound Open
Sleep is a fundamental process by which the brain achieves an optimal computational regime; it has been suggested that criticality is an appropriate theoretical framework in which such a process can be understood. Studying the critical and…
View article: MIND WANDERING DURING IMPLICIT LEARNING IS ASSOCIATED WITH INCREASED PERIODIC EEG ACTIVITY AND IMPROVED EXTRACTION OF HIDDEN PROBABILISTIC PATTERNS
MIND WANDERING DURING IMPLICIT LEARNING IS ASSOCIATED WITH INCREASED PERIODIC EEG ACTIVITY AND IMPROVED EXTRACTION OF HIDDEN PROBABILISTIC PATTERNS Open
Mind wandering, occupying 30-50% of our waking time, remains an enigmatic phenomenon in cognitive neuroscience. Predominantly viewed negatively, mind wandering is often associated with detrimental impacts on attention-demanding (model-base…
View article: NREM Slow-Wave Activity in Adolescents Is Differentially Associated With ADHD Levels and Normalized by Pharmacological Treatment
NREM Slow-Wave Activity in Adolescents Is Differentially Associated With ADHD Levels and Normalized by Pharmacological Treatment Open
Background A compelling hypothesis about attention-deficit/hyperactivity disorder (ADHD) etiopathogenesis is that the ADHD phenotype reflects a delay in cortical maturation. Slow-wave activity (SWA) of non-rapid eye movement (NREM) sleep e…
View article: The effects of aging and hearing impairment on listening in noise
The effects of aging and hearing impairment on listening in noise Open
View article: Mobile sleep EEG suggests delayed brain maturation in adolescents with ADHD: A focus on oscillatory spindle frequency
Mobile sleep EEG suggests delayed brain maturation in adolescents with ADHD: A focus on oscillatory spindle frequency Open
The observed between-groups difference might indicate delayed brain maturity unraveled during sleep in ADHD.
View article: Temporal association between sleep spindles and ripples in the human anterior and mediodorsal thalamus
Temporal association between sleep spindles and ripples in the human anterior and mediodorsal thalamus Open
Sleep spindles are major oscillatory components of Non‐Rapid Eye Movement (NREM) sleep, reflecting hyperpolarization‐rebound sequences of thalamocortical neurons. Reports suggest a link between sleep spindles and several forms of high‐freq…
View article: SLEEP EEG SPECTRAL EXPONENTS AND SLOW WAVE ACTIVITY IN ADHD
SLEEP EEG SPECTRAL EXPONENTS AND SLOW WAVE ACTIVITY IN ADHD Open
View article: ECOG SPECTRAL PARAMETERS OF HOMEOSTATIC SLEEP REGULATION
ECOG SPECTRAL PARAMETERS OF HOMEOSTATIC SLEEP REGULATION Open
View article: Persistently increased post-stress activity of paraventricular thalamic neurons is essential for the emergence of stress-induced maladaptive behavior
Persistently increased post-stress activity of paraventricular thalamic neurons is essential for the emergence of stress-induced maladaptive behavior Open
Traumatic events can immediately lead to debilitating symptoms collectively called Acute Stress Disorder (ASD), however the mechanisms of ASD are poorly understood. Using a rodent model of ASD here we identify a crucial communication bottl…
View article: The effects of aging and hearing impairment on listening in noise
The effects of aging and hearing impairment on listening in noise Open
Listening in a noisy environment (e.g., speech in noise) relies on the fundamental ability to extract coherence from the variable sensory input. This allows the detection active sound sources and their segregation of them from the rest of …
View article: Temporal association between sleep spindles and ripples in the human anterior and mediodorsal thalamus
Temporal association between sleep spindles and ripples in the human anterior and mediodorsal thalamus Open
Sleep spindles are major oscillatory components of Non-Rapid Eye Movement (NREM) sleep, reflecting hyperpolarization-rebound sequences of thalamocortical neurons. Reports suggest a link between sleep spindles and several forms of high freq…
View article: Overnight dynamics in scale-free and oscillatory spectral parameters of NREM sleep EEG
Overnight dynamics in scale-free and oscillatory spectral parameters of NREM sleep EEG Open
View article: Do we parse the background into separate streams in the cocktail party?
Do we parse the background into separate streams in the cocktail party? Open
In the cocktail party situation, people with normal hearing usually follow a single speaker among multiple concurrent ones. However, there is no agreement in the literature as to whether the background is segregated into multiple streams/s…
View article: Scale-free and oscillatory spectral measures of sleep stages in humans
Scale-free and oscillatory spectral measures of sleep stages in humans Open
Power spectra of sleep electroencephalograms (EEG) comprise two main components: a decaying power-law corresponding to the aperiodic neural background activity, and spectral peaks present due to neural oscillations. “Traditional” band-base…
View article: Overnight dynamics in scale-free and oscillatory spectral parameters of NREM sleep EEG: can polysomnography provide an insight into sleep regulation?
Overnight dynamics in scale-free and oscillatory spectral parameters of NREM sleep EEG: can polysomnography provide an insight into sleep regulation? Open
Sleep is an inherent feature of human neurobehavioral functioning. However, clinical and research practices largely rely on consensual criteria of sleep-wake characterization. In turn, quantitative EEG measures were shown to be largely red…
View article: Scale-free and oscillatory spectral measures of sleep stages in humans
Scale-free and oscillatory spectral measures of sleep stages in humans Open
Power spectra of sleep electroencephalograms (EEG) comprise two main components: a decaying power-law corresponding to the aperiodic neural background activity, and spectral peaks present due to neural oscillations.’Traditional’ band-based…
View article: Thalamic activity during scalp slow waves in humans
Thalamic activity during scalp slow waves in humans Open
Slow waves are major pacemakers of NREM sleep oscillations. While slow waves themselves are mainly generated by cortical neurons, it is not clear what role thalamic activity plays in the generation of some oscillations grouped by slow wave…
View article: Speech prosody supports speaker selection and auditory stream segregation in a multi-talker situation
Speech prosody supports speaker selection and auditory stream segregation in a multi-talker situation Open
To process speech in a multi-talker environment, listeners need to segregate the mixture of incoming speech streams and focus their attention on one of them. Potentially, speech prosody could aid the segregation of different speakers, the …
View article: Do we parse the background into separate streams in the cocktail party?
Do we parse the background into separate streams in the cocktail party? Open
A bstract In the cocktail party situation, people with normal hearing usually follow a single speaker among multiple concurrent ones. However, there is no agreement in the literature as to whether the background is segregated into multiple…
View article: Speech Prosody Supports Speaker Selection and Auditory Stream Segregation in a Multi-Talker Situation
Speech Prosody Supports Speaker Selection and Auditory Stream Segregation in a Multi-Talker Situation Open
View article: Sleep‐spindle frequency: Overnight dynamics, afternoon nap effects, and possible circadian modulation
Sleep‐spindle frequency: Overnight dynamics, afternoon nap effects, and possible circadian modulation Open
Summary Homeostatic and circadian processes play a pivotal role in determining sleep structure, timing, and quality. In sharp contrast with the wide accessibility of the electroencephalogram (EEG) index of sleep homeostasis, an electrophys…
View article: Thalamic activity during scalp slow waves in humans
Thalamic activity during scalp slow waves in humans Open
Slow waves are major pacemakers of NREM sleep oscillations. While slow waves themselves are mainly generated by cortical neurons, it is not clear what role thalamic activity plays in the generation of some oscillations grouped by slow wave…
View article: Sleep spindles, ripples, and interictal epileptiform discharges in the human anterior and mediodorsal thalamus
Sleep spindles, ripples, and interictal epileptiform discharges in the human anterior and mediodorsal thalamus Open
Sleep spindles are major oscillatory components of Non-Rapid Eye Movement (NREM) sleep, reflecting hyperpolarization-rebound sequences of thalamocortical neurons, the inhibition of which is caused by the NREM-dependent activation of GABAer…
View article: Sleep spindle frequency: overnight dynamics, afternoon nap effects, and possible circadian modulation
Sleep spindle frequency: overnight dynamics, afternoon nap effects, and possible circadian modulation Open
Homeostatic and circadian processes play a pivotal role in determining sleep structure, timing and quality. In sharp contrast with the wide accessibility of the EEG index of sleep homeostasis, an electrophysological measure of the circadia…
View article: A set of composite, non-redundant EEG measures of NREM sleep based on the power law scaling of the Fourier spectrum
A set of composite, non-redundant EEG measures of NREM sleep based on the power law scaling of the Fourier spectrum Open
View article: A new set of composite, non-redundant electroencephalogram measures of non-rapid eye movement sleep based on the power law scaling of the Fourier spectrum
A new set of composite, non-redundant electroencephalogram measures of non-rapid eye movement sleep based on the power law scaling of the Fourier spectrum Open
A novel method for deriving composite, non-redundant measures of non-rapid eye movement (NREM) sleep electroencephalogram (EEG) is developed on the basis of the power law scaling of the Fourier spectra. Measures derived are the spectral in…