Results 1 to 10 of about 32,031 (301)

Critical Flicker Fusion Frequency: A Narrative Review [PDF]

Medicina, 2021
This review presents the current knowledge of the usage of critical flicker fusion frequency (CFF) in human and animal model studies. CFF has a wide application in different fields, especially as an indicator of cortical arousal and visual processing. In
Natalia D. Mankowska, Anna B. Marcinkowska, Monika Waskow, Rita I. Sharma, Jacek Kot, Pawel J. Winklewski   +5 more
doaj   +3 more sources

Inferior parietal lobule encodes visual temporal resolution processes contributing to the critical flicker frequency threshold in humans. [PDF]

PLoS ONE, 2014
The measurement of the Critical Flicker Frequency threshold is used to study the visual temporal resolution in healthy subjects and in pathological conditions.
Andrea Nardella, Lorenzo Rocchi, Antonella Conte, Matteo Bologna, Antonio Suppa, Alfredo Berardelli   +5 more
doaj   +2 more sources

Meta-analysis: The diagnostic accuracy of critical flicker frequency in minimal hepatic encephalopathy. [PDF]

Aliment Pharmacol Ther, 2013
BACKGROUND: Minimal hepatic encephalopathy (MHE) reduces quality of life, increases the risk of road traffic incidents and predicts progression to overt hepatic encephalopathy and death.
Torlot FJ, McPhail MJ, Taylor-Robinson SD.   +2 more
europepmc   +3 more sources

Critical flicker frequency measurement training

Oftalʹmologiâ, 2014
Purpose: Developing a method to improve the accuracy of the measuring of critical flicker frequency (CFF).Methods: When measuring CFF the light pulses with LEDs yellow 5 mm in diameter with a force of light 3 mcd placed in an area near point of clear ...
V. V. Rozhentsov
doaj   +4 more sources

Assessing the Relationship Between the Flicker Test and Cognitive Performance [PDF]

Biology
An individual’s ability to process flickering light is expressed by critical flicker fusion frequency (CFFF), tested with the flicker test. CFFF is used to assess visual processing, arousal, and cognitive functioning, among other things, although it is ...
Natalia D. Mankowska, Rita I. Sharma, Anna B. Marcinkowska, Jacek Kot, Pawel J. Winklewski   +4 more
doaj   +2 more sources

Visual Neuroplasticity: Modulating Cortical Excitability with Flickering Light Stimulation [PDF]

Journal of Imaging
The balance between cortical excitation and inhibition (E/I balance) in the cerebral cortex is critical for cognitive processing and neuroplasticity. Modulation of this balance has been linked to a wide range of neuropsychiatric and neurodegenerative ...
Francisco J. Ávila
doaj   +2 more sources

Finding flicker: Critical differences in temporal frequency capture attention [PDF]

Frontiers in Psychology, 2011
Rapid visual flicker is known to capture attention. Here we show slow flicker can also capture attention under reciprocal temporal conditions. Observers searched for a target line (vertical or horizontal) among tilted distractors.
John eCass, Erik eVan der Burg, David eAlais   +2 more
doaj   +6 more sources

Inhibitory control test, critical flicker frequency, and psychometric tests in the diagnosis of minimal hepatic encephalopathy in cirrhosis

The Saudi Journal of Gastroenterology, 2013
Background/Aim: Minimal hepatic encephalopathy (MHE) impairs health-related quality of life and driving ability of the patient. Objective: We assessed the utility of the inhibitory control test (ICT), critical flicker frequency (CFF), and psychometry in ...
Praveen Sharma, Ajay Kumar, Shweta Singh, Pankaj Tyagi, Ashish Kumar   +4 more
doaj   +2 more sources

The theory of critical flicker fusion frequency and its application in cataracts

Advances in Ophthalmology Practice and Research, 2023
Background: Due to media opacity, it is usually difficult to accurately evaluate the postoperative visual acuity in cataracts patients. As a small and portable tool, the critical flicker fusion frequency (CFF) device reflects the temporal resolution of ...
Guangcan Xu, Junxia Fu, Haolan Qi, Linyu Li, Wenqian Chen, Yi Gao, Tianju Ma, Zi Ye, Zhaohui Li   +8 more
doaj   +1 more source

Impact of Temporal Visual Flicker on Spatial Contrast Sensitivity in Myopia

Frontiers in Neuroscience, 2021
PurposeTo investigate whether short-term exposure to high temporal frequency full-field flicker has an impact on spatial visual acuity in individuals with varying degrees of myopia.MethodsThirty subjects (evenly divided between control and experimental ...
Jie Ye, Pawan Sinha, Fang Hou, Xianghang He, Xianghang He, Meixiao Shen, Fan Lu, Yilei Shao   +7 more
doaj   +1 more source