Results 41 to 50 of about 7,984 (228)

Inhibitory Decay and Supercritical Brain Dynamics During Sleep Deprivation

open access: yesAdvanced Science, EarlyView.
Sleep deprivation progressively shifts human brain dynamics from near‐critical toward supercritical states, as revealed by neuronal avalanche analysis of resting‐state fMRI. These changes track subjective sleep pressure rather than vigilance lapses and show marked network heterogeneity. A circuit model suggests that reduced inhibitory efficacy provides
Dai Zhang   +6 more
wiley   +1 more source

Pupillometry as a tool to study expertise in medicine

open access: yesFrontline Learning Research, 2017
Background Pupillometry has been studied as a physiological marker for quantifying cognitive load since the early 1960s. It has been established that small changes in pupillary size can provide an index of the cognitive load of a participant as he/she ...
Adam Szulewski   +2 more
doaj   +1 more source

Pupillometry: Psychology, Physiology, and Function

open access: yesJournal of Cognition, 2018
Pupils respond to three distinct kinds of stimuli: they constrict in response to brightness (the pupil light response), constrict in response to near fixation (the pupil near response), and dilate in response to increases in arousal and mental effort, either triggered by an external stimulus or spontaneously.
openaire   +6 more sources

Pupillometry and mental effort

open access: yes, 2022
non
MASSA, PAOLA PIA
core  

Specific thresholds of quantitative pupillometry parameters predict unfavorable outcome in comatose survivors early after cardiac arrest

open access: yesResuscitation Plus, 2023
Aim: Quantitative pupillometry is the guideline-recommended method for assessing pupillary light reflex for multimodal prognostication in comatose patients resuscitated from out-of-hospital cardiac arrest (OHCA).
Benjamin Nyholm   +7 more
doaj   +1 more source

Chromatic Pupillometry Findings in Alzheimer’s Disease [PDF]

open access: yesFrontiers in Neuroscience, 2020
Intrinsically photosensitive melanopsin retinal ganglion cells (mRGCs) are crucial for non-image forming functions of the eye, including the photoentrainment of circadian rhythms and the regulation of the pupillary light reflex (PLR). Chromatic pupillometry, using light stimuli at different wavelengths, makes possible the isolation of the contribution ...
Martina Romagnoli   +16 more
openaire   +6 more sources

Updating Traumatic Brain Injury Classification for Surgeons: Integrating the CBI‐M Framework Into Trauma and Acute Care Practice

open access: yesWorld Journal of Surgery, EarlyView.
Traumatic brain injury (TBI) remains a major cause of death and disability worldwide. Traditional classification based on the Glasgow Coma Scale (GCS) provides a shared clinical language but insufficiently captures the biological heterogeneity, imaging variability, and contextual modifiers that influence outcomes.
Ruben Peralta   +6 more
wiley   +1 more source

Novel pupillometry protocols for the early detection of melanopsin dysfunction in glaucoma

open access: yes, 2017
This thesis developed new pupillometry paradigms to objectively measure melanopsin function in humans with healthy or diseased eyes. It was determined that melanopsin function is independent of age and refractive error.
Adhikari, Prakash
core   +1 more source

Practitioners' Perceptions of Augmented and Virtual Reality in Endodontic Treatment Planning: A Pilot Study

open access: yesInternational Endodontic Journal, EarlyView.
ABSTRACT Aim To develop a streamlined software workflow for converting cone‐beam computed tomography (CBCT) data into augmented reality (AR) and virtual reality (VR) formats, and to evaluate dental practitioners' perceptions of these advanced visualisation modalities compared to conventional CBCT analysis for endodontic treatment planning.
Marcel Reymus   +3 more
wiley   +1 more source

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