Results 41 to 50 of about 26,857 (213)

Photic stimulation inhibits growth hormone secretion in rats: A hypothalamic mechanism for transient entrainment [PDF]

open access: yes, 2004
It is well established that photic cues are used by the suprachiasmatic nucleus (SCN) to entrain circadian rhythms to the light/dark cycle, but the role of photic stimuli in the regulation of ultradian neuroendocrine rhythms is ill defined.
Davies, Jeffrey S.   +2 more
core   +1 more source

Neuropsychological-EEG Activation in Genetic Generalized Epilepsy

open access: yesPediatric Neurology Briefs, 2015
Investigators from Lithuanian University of Health Sciences, Kaunas, evaluated the effects of neuropsychological activation (NPA) tasks on epileptiform discharges (ED) in adolescents with idiopathic generalized epilepsy (IGE) and in comparison with ...
J Gordon Millichap, John J Millichap
doaj   +1 more source

Frequency of intermittent photic stimulation: Effect on photic afterdischarges, photic driving, and behavioral activity [PDF]

open access: yesBulletin of the Psychonomic Society, 1976
The effects of various frequencies of intermittent photic stimulation (1/7, 1/3.5, 1/1, 3/1, 6/1, 9/1, 15/1, 18/1, 24/1, and 60/1 sec) on photically evoked afterdischarges (PhADs), photic driving (PD), and behavioral activity (gridcrossings) were examined in rats.
Erin D. Bigler, Donovan E. Fleming
openaire   +1 more source

Quantifying changes in EEG complexity induced by photic stimulation [PDF]

open access: yes, 2009
Objectives: This study aims to characterize EEG complexity, measured as the prediction error resulting from nonlinear prediction, in healthy humans during photic stimulation.
Nollo, G.   +5 more
core   +1 more source

Response to photic stimulation as a measure of cortical excitability in epilepsy patients [PDF]

open access: yes, 2023
Studying states and state transitions in the brain is challenging due to nonlinear, complex dynamics. In this research, we analyze the brain's response to non-invasive perturbations.
Reynolds, A   +7 more
core   +1 more source

EEG-predictor’s effectiveness of starting therapy in epilepsy de novo by adult

open access: yesБюллетень сибирской медицины, 2011
The study cerebral rhythm reactivity by functional load at 49 patient’s with epilepsy de novo. Make photic stimulation and cognitive activation. It was demonstrated that patients, who get remission on starting anticonvulsant therapy have intact brain ...
O. V. Grebenyuk   +3 more
doaj   +1 more source

Semiology of functional/dissociative seizures in idiopathic generalized epilepsy: An inpatient video‐electroencephalographic study

open access: yesEpilepsia, EarlyView.
Abstract Objective This study was undertaken to estimate the prevalence and characterize the semiology of co‐occurring functional/dissociative seizures (FDSs) and identify clinical features potentially associated with the development of video‐electroencephalography (video‐EEG)‐diagnosed FDSs in patients with idiopathic generalized epilepsy (IGE ...
Javier Peña‐Ceballos   +13 more
wiley   +1 more source

Effect of photic stimulation on acetylcholine release from cat cerebral cortex [PDF]

open access: yes, 1972
Cortical release of acetylcholine was assayed using the leech muscle preparation in cats with transected brainstems. Both spontaneous and elicited somatosensory and visual cortical release of acetylcholine were measured, photic stimuli being directed ...
Bartolini, A.   +2 more
core   +1 more source

Mechanisms of Photosensitive Epilepsies

open access: yesPediatric Neurology Briefs, 1999
Intermittent photic stimulation was performed in 21 photosensitive epileptic patients and the relation of the photoparoxysmal response (PPR) to the epilepsy syndrome was determined in a study at the National Epilepsy Center, Shizuoka Higashi Hospital ...
J Gordon Millichap
doaj   +1 more source

Does age influence diagnostic outcomes in an adult cohort referred to a first‐seizure clinic?

open access: yesEpilepsia, EarlyView.
Abstract Objective The aging Danish population is associated with increasing morbidity and healthcare utilization. This study examines age‐related differences in resource utilization and diagnostic outcomes between older (65–95 years) and younger adults (18–64 years) evaluated for suspected epilepsy, including clinical management, diagnostic yield, and
Anne Line Lund Birkmose   +3 more
wiley   +1 more source

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