Results 21 to 30 of about 41,260 (287)

Cortical Correlates of Increased Postural Task Difficulty in Young Adults: A Combined Pupillometry and EEG Study

Sensors, 2022
The pupillary response reflects mental effort (or cognitive workload) during cognitive and/or motor tasks including standing postural control. EEG has been shown to be a non-invasive measure to assess the cortical involvement of postural control.
Melike Kahya, Ke Liao, Kathleen M. Gustafson, Abiodun E. Akinwuntan, Brad Manor, Hannes Devos   +5 more
doaj   +1 more source

Intrapatient variability of the pupillary pain index to remifentanil [PDF]

, 2017
info:eu-repo/semantics ...
Amorim, Pedro, Antunes, P., Cabral, Tiago, Correia, Rui P., Nunes, Catarina S., Teixeira, J., Vide, Sérgio   +6 more
core   +10 more sources

Fixed and dilated pupils by pupillometer in lateralized periodic discharges: a case report in the neurocritical care unit [PDF]

Journal of Neurocritical Care, 2022
Background Fixed and dilated pupils (FDPs) have become synonymous with devastating neurological damage and brainstem injury commonly associated with mass effect and herniation.
Christopher Thomas Primiani, Khalil Salim Husari, Rohan Mathur, Romergryko Guance Geocadin   +3 more
doaj   +1 more source

Pupil tracks statistical regularities: behavioral and neural implications [PDF]

Journal of Integrative Neuroscience, 2020
Pupillary light reflex adjusts the amount of light reaching the retina. Recent work suggests that the brainstem pupillary light reflex pathway is controlled by the environment's internal models derived from higher-order temporal statistics.
Shamini Warda, Shubham Pandey
doaj   +1 more source

Pupillary dynamics and accommodative response in mild traumatic brain injury

Taiwan Journal of Ophthalmology, 2023
PURPOSE: To measure the pupillary dynamics and accommodative response in individuals with mild traumatic brain injury (mTBI) as compared to age-matched controls.
Pritam Dutta, Ayisha Atiya, Smita Vittal, S. Ambika, Jameel Rizwana Hussaindeen   +4 more
doaj   +1 more source

Blue-light stimulation of the blind-spot constricts the pupil and enhances contrast sensitivity

PLoS ONE, 2023
Short- and long-wavelength light can alter pupillary responses differently, allowing inferences to be made about the contribution of different photoreceptors on pupillary constriction.
Tim Schilling, Mojtaba Soltanlou, Hans-Christoph Nuerk, Hamed Bahmani   +3 more
doaj   +2 more sources

Pupillary and microsaccadic responses to cognitive effort and emotional arousal during complex decision making

Journal of Eye Movement Research, 2020
A large body of literature documents the sensitivity of pupil response to cognitive load (e.g., Krejtz et al. 2018) and emotional arousal (Bradley et al., 2008).
Krzysztof Krejtz, Justyna Żurawska, Andrew Duchowski, Szymon Wichary   +3 more
doaj   +1 more source

Time's arrow and pupillary response [PDF]

Psychophysiology, 2005
AbstractThe psychological arrow of time refers to our experience of the forward temporal progression of all natural processes. To investigate whether and how time's arrow is mentally coded in individual everyday events, a relatedness judgment task was used. The items each consisted of a verb (probe) and an adjective or participle (target). The temporal
Nuthmann, A, van der Meer, Elke E.
openaire   +3 more sources

RdgB2 is required for dim-light input into intrinsically photosensitive retinal ganglion cells. [PDF]

, 2015
A subset of retinal ganglion cells is intrinsically photosensitive (ipRGCs) and contributes directly to the pupillary light reflex and circadian photoentrainment under bright-light conditions.
Berson, David M, Elsaesser, Rebecca, Güler, Ali D, Hattar, Samer, Montell, Craig, Rupp, Alan, Sheng, Wenlong, Walker, Marquis T, Weng, Shijun   +8 more
core   +2 more sources

The effect of induced hyperammonaemia on sleep and melanopsin-mediated pupillary light response in patients with liver cirrhosis: A single-blinded randomized crossover trial.

PLoS ONE, 2022
Background & aimsSleep disturbances are related to hepatic encephalopathy and hyperammonaemia in patients with cirrhosis. The circadian rhythm is regulated by light stimulation of the retina via melanopsin-containing ganglion cells.
Anna Emilie Kann, Shakoor Ba-Ali, Jakob B Seidelin, Fin Stolze Larsen, Steffen Hamann, Peter Nissen Bjerring   +5 more
doaj   +2 more sources