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https://www.readbyqxmd.com/read/29353461/eye-blinks-are-related-to-auditory-information-processing-evidence-from-a-complex-speech-perception-task
#1
S Oliver Kobald, Edmund Wascher, Holger Heppner, Stephan Getzmann
There is increasing evidence that spontaneous eye blinks are related to mental states and can predict performance in certain tasks because of their relation to dopaminergic activity. Moreover, it has been shown that eye blinks while performing visual tasks are preferably executed not before all available information and even the manual response has been processed and given. Thus, blinks provide a natural endpoint of visual information processing. In the present study, we investigate to what degree such functional assignment of eye blinks also applies when only auditory stimuli are processed...
January 20, 2018: Psychological Research
https://www.readbyqxmd.com/read/29350447/effect-of-sedation-with-butorphanol-on-variables-pertaining-to-the-ophthalmic-examination-in-dogs
#2
Jean-Yves Douet, Alain Regnier, Agnès Dongay, Sophie Jugant, Géraldine Jourdan, Didier Concordet
OBJECTIVE: To evaluate whether sedation with intramuscular butorphanol can interfere with different variables of the ocular examination in dogs. ANIMALS: Twenty-two beagles without ophthalmic abnormalities. PROCEDURES: Each dog was examined 20 min prior to and again just before administration of butorphanol to establish baseline data. The globe and nictitating membrane position was evaluated, and the following were recorded: menace response, dazzle reflex, corneal blink reflex, phenol red thread tear test (PRT), Schirmer tear test-1 (STT-1), pupil size (PS) measurement, and rebound tonometry...
January 19, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29350323/william-e-vidaver-1921-2017-an-innovator-enthusiastic-scientist-inspiring-teacher-and-a-wonderful-friend
#3
A H Jay Burr, Aaron Vidaver, Ulrich Schreiber, Doug Bruce, Danielle J Donnelly
William (Bill) E. Vidaver (February 2, 1921-August 31, 2017), who did his Ph.D. with Laurence (Larry) R. Blinks at Stanford (1964) and a postdoc with C. Stacy French (1965), taught and did research at Simon Fraser University (SFU) for almost 30 years. Here he published over 80 papers in photosynthesis-related areas co-authored by his graduate students, postdocs, visiting professors and SFU colleagues. He developed a unique high-pressure cuvette for the study of oxygen exchange and studied high-pressure effects in photosynthesis...
January 19, 2018: Photosynthesis Research
https://www.readbyqxmd.com/read/29346920/conditional-1-f-%C3%AE-noise-from-single-molecules-to-macroscopic-measurement
#4
N Leibovich, E Barkai
We demonstrate that the measurement of 1/f^{α} noise at the single molecule or nano-object limit is remarkably distinct from the macroscopic measurement over a large sample. The single-particle measurements yield a conditional time-dependent spectrum. However, the number of units fluctuating on the time scale of the experiment is increasing in such a way that the macroscopic measurements appear perfectly stationary. The single-particle power spectrum is a conditional spectrum, in the sense that we must make a distinction between idler and nonidler units on the time scale of the experiment...
September 2017: Physical Review. E
https://www.readbyqxmd.com/read/29346084/effects-of-the-road-environment-on-the-development-of-driver-sleepiness-in-young-male-drivers
#5
Christer Ahlström, Anna Anund, Carina Fors, Torbjörn Åkerstedt
Latent driver sleepiness may in some cases be masked by for example social interaction, stress and physical activity. This short-term modulation of sleepiness may also result from environmental factors, such as when driving in stimulating environments. The aim of this study is to compare two road environments and investigate how they affect driver sleepiness. Thirty young male drivers participated in a driving simulator experiment where they drove two scenarios: a rural environment with winding roads and low traffic density, and a suburban road with higher traffic density and a more built-up roadside environment...
January 12, 2018: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/29342241/ipat-intelligent-prediction-and-association-tool-for-genomic-research
#6
Chunpeng James Chen, Zhiwu Zhang
Summary: The ultimate goal of genomic research is to effectively predict phenotypes from genotypes so that medical management can improve human health and molecular breeding can increase agricultural production. Genomic prediction or selection (GS) plays a complementary role to genome-wide association studies (GWAS), which is the primary method to identify genes underlying phenotypes. Unfortunately, most computing tools cannot perform data analyses for both GWAS and GS. Furthermore, the majority of these tools are executed through a command-line interface (CLI), which requires programming skills...
January 11, 2018: Bioinformatics
https://www.readbyqxmd.com/read/29341353/fluorescence-redox-blinking-adaptable-to-structural-analysis-of-nucleic-acids
#7
Takafumi Miyata, Naohiko Shimada, Atsushi Maruyama, Kiyohiko Kawai
The phenomenon of "blinking" is unique to single-molecule fluorescence measurements. By designing a fluorophore with an appropriate dark state lifetime (τoff), we have devised a kinetic analysis based on the control of fluorescence blinking (KACB) to investigate the dynamics of biomolecules. By controlling the redox reaction based blinking (rKACB), we have previously investigated conformational dynamics of RNA at the single-molecule level. However, there have been little knowledge about suitable fluorescent molecules for rKACB, and the application of rKACB has been limited to the analysis of hairpins and duplex structures of nucleic acids...
January 17, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29340968/a-novel-blink-detection-method-based-on-pupillometry-noise
#8
Ronen Hershman, Avishai Henik, Noga Cohen
Pupillometry (or the measurement of pupil size) is commonly used as an index of cognitive load and arousal. Pupil size data are recorded using eyetracking devices that provide an output containing pupil size at various points in time. During blinks the eyetracking device loses track of the pupil, resulting in missing values in the output file. The missing-sample time window is preceded and followed by a sharp change in the recorded pupil size, due to the opening and closing of the eyelids. This eyelid signal can create artificial effects if it is not removed from the data...
January 16, 2018: Behavior Research Methods
https://www.readbyqxmd.com/read/29340652/pain-sensitivity-associated-with-the-length-of-the-maximum-interblink-period
#9
Wing Li, Meng C Lin
Purpose: Pain sensitivity has been identified as a factor that affects how individuals answer dry eye questionnaires, but it is unknown how it affects ocular discomfort. This study used the time that individuals could refrain from blinking as an indicator of ocular discomfort and set out to determine whether it was related to pain sensitivity, while adjusting for ocular surface conditions. Methods: Subjects first completed the Pain Sensitivity Questionnaire to quantify pain sensitivity levels...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29337016/tear-instability-importance-mechanisms-validity-and-reliability-of-assessment
#10
Charles W Mcmonnies
PURPOSE: To examine the factors which contribute to tear stability and the validity and reliability of methods used for assessing tear break up time which is a core part of an examination of tear stability in dry eye patients. METHODS: A review of publications which are relevant to tear stability and its assessment. RESULTS: Tear break up time may be more invasive than intended if difficulty avoiding blinking during assessment results in reflex tearing...
January 11, 2018: Journal of Optometry
https://www.readbyqxmd.com/read/29330763/safe-and-sensible-preprocessing-and-baseline-correction-of-pupil-size-data
#11
Sebastiaan Mathôt, Jasper Fabius, Elle Van Heusden, Stefan Van der Stigchel
Measurement of pupil size (pupillometry) has recently gained renewed interest from psychologists, but there is little agreement on how pupil-size data is best analyzed. Here we focus on one aspect of pupillometric analyses: baseline correction, i.e., analyzing changes in pupil size relative to a baseline period. Baseline correction is useful in experiments that investigate the effect of some experimental manipulation on pupil size. In such experiments, baseline correction improves statistical power by taking into account random fluctuations in pupil size over time...
January 12, 2018: Behavior Research Methods
https://www.readbyqxmd.com/read/29324440/micro-patterned-graphene-based-sensing-skins-for-human-physiological-monitoring
#12
Long Wang, Kenneth J Loh, Wei-Hung Chiang, Kausik Manna
Ultrathin, flexible, conformal, and skin-like electronic transducers are emerging as promising candidates for noninvasive and nonintrusive human health monitoring. In this work, a wearable sensing membrane is developed by patterning a graphene-based solution onto ultrathin medical tapes, which can then be attached to the skin for monitoring human physiological parameters and physical activity. Here, the sensor is validated for monitoring finger bending/movements and for recognizing hand motion patterns, thereby demonstrating its future potential for evaluating athletic performance, physical therapy, and designing next-generation human-machine interfaces...
January 11, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29311017/reanimation-of-the-paralyzed-lids-by-cross-face-nerve-graft-and-platysma-transfer
#13
Federico Biglioli, Matteo Zago, Fabiana Allevi, Daniela Ciprandi, Giovanni Dell'Aversana Orabona, Valentina Pucciarelli, Dimitri Rabbiosi, Ilaria Pacifici, Filippo Tarabbia, Chiarella Sforza
Alterations of facial muscles may critically humper patients' quality of life. One of the worst conditions is the reduction or abolition of eye blinking. To prevent these adverse effects, surgical rehabilitation of eyelid function is the current treatment choice. In the present paper, we present a modification of the technique devised by Nassif to recover lids from long-standing paralysis. In our modification, the upper lid is rehabilitated by a platisma graft innervated by the contralateral facial nerve branches using a cross-face sural nerve graft...
December 27, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29302972/tuning-single-quantum-dot-emission-with-a-micro-mirror
#14
Gang Cheng Yuan, Daniel E Gomez, Nicholas Kirkwood, Paul Mulvaney
The photoluminescence of single quantum dots fluctuates between bright (on) and dark (off) states, also termed fluorescence intermittency or blinking. This blinking limits the performance of quantum dot based devices such as light-emitting diodes and solar cells. However, the origins of the blinking remain unresolved. Here, we use a movable gold micro-mirror to determine both the quantum yield of the bright state and the orientation of the excited state dipole of single quantum dots. We observe that the quantum yield of the bright state is close to unity for these single QDs...
January 5, 2018: Nano Letters
https://www.readbyqxmd.com/read/29301261/detection-of-craving-for-gaming-in-adolescents-with-internet-gaming-disorder-using-multimodal-biosignals
#15
Hodam Kim, Jihyeon Ha, Won-Du Chang, Wanjoo Park, Laehyun Kim, Chang-Hwan Im
The increase in the number of adolescents with internet gaming disorder (IGD), a type of behavioral addiction is becoming an issue of public concern. Teaching adolescents to suppress their craving for gaming in daily life situations is one of the core strategies for treating IGD. Recent studies have demonstrated that computer-aided treatment methods, such as neurofeedback therapy, are effective in relieving the symptoms of a variety of addictions. When a computer-aided treatment strategy is applied to the treatment of IGD, detecting whether an individual is currently experiencing a craving for gaming is important...
January 1, 2018: Sensors
https://www.readbyqxmd.com/read/29300752/does-trait-anxiety-influence-effects-of-oxytocin-on-eye-blink-startle-reactivity-a-randomized-double-blind-placebo-controlled-crossover-study
#16
Sonja Schumacher, Misari Oe, Frank H Wilhelm, Michael Rufer, Markus Heinrichs, Steffi Weidt, Hanspeter Moergeli, Chantal Martin-Soelch
BACKGROUND: Previous research has demonstrated that the neuropeptide oxytocin modulates social behaviors and reduces anxiety. However, effects of oxytocin on startle reactivity, a well-validated measure of defense system activation related to fear and anxiety, have been inconsistent. Here we investigated the influence of oxytocin on startle reactivity with particular focus on the role of trait anxiety. METHODS: Forty-four healthy male participants attended two experimental sessions...
2018: PloS One
https://www.readbyqxmd.com/read/29298209/electrophysiology-of-cranial-nerve-testing-trigeminal-and-facial-nerves
#17
Iryna M Muzyka, Bachir Estephan
The clinical examination of the trigeminal and facial nerves provides significant diagnostic value, especially in the localization of lesions in disorders affecting the central and/or peripheral nervous system. The electrodiagnostic evaluation of these nerves and their pathways adds further accuracy and reliability to the diagnostic investigation and the localization process, especially when different testing methods are combined based on the clinical presentation and the electrophysiological findings. The diagnostic uniqueness of the trigeminal and facial nerves is their connectivity and their coparticipation in reflexes commonly used in clinical practice, namely the blink and corneal reflexes...
January 2018: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29295522/comparison-between-scalp-eeg-and-behind-the-ear-eeg-for-development-of-a-wearable-seizure-detection-system-for-patients-with-focal-epilepsy
#18
Ying Gu, Evy Cleeren, Jonathan Dan, Kasper Claes, Wim Van Paesschen, Sabine Van Huffel, Borbála Hunyadi
A wearable electroencephalogram (EEG) device for continuous monitoring of patients suffering from epilepsy would provide valuable information for the management of the disease. Currently no EEG setup is small and unobtrusive enough to be used in daily life. Recording behind the ear could prove to be a solution to a wearable EEG setup. This article examines the feasibility of recording epileptic EEG from behind the ear. It is achieved by comparison with scalp EEG recordings. Traditional scalp EEG and behind-the-ear EEG were simultaneously acquired from 12 patients with temporal, parietal, or occipital lobe epilepsy...
December 23, 2017: Sensors
https://www.readbyqxmd.com/read/29285420/development-of-a-non-invasive-blink-reflexometer
#19
Nancey Trevanian Tsai, Jesse S Goodwin, Mark E Semler, Ronald T Kothera, Mark Van Horn, Bethany J Wolf, Dena P Garner
Qualitative assessments of the blink reflex are used clinically to assess neurological status in critical care, operating room, and rehabilitative settings. Despite decades of literature supporting the use of quantitative measurements of the blink reflex in the evaluation of multiple neurological disorders, clinical adoption has failed. Thus, there remains an unmet clinical need for an objective, portable, non-invasive metric of neurological health that can be used in a variety of settings. We have developed a high-speed videography-based device to trigger, record, and analyze a blink reflex...
2017: IEEE Journal of Translational Engineering in Health and Medicine
https://www.readbyqxmd.com/read/29282985/chemical-structure-ensemble-and-single-particle-spectroscopy-of-thick-shell-inp-znse-quantum-dots
#20
Kemar R Reid, James R McBride, Nathaniel J Freymeyer, Lucas B Thal, Sandra J Rosenthal
Thick-shell (> 5 nm) InP-ZnSe colloidal quantum dots (QDs) grown by a continuous-injection shell growth process are reported. The growth of a thick crystalline shell is attributed to the high temperature of the growth process and the relatively low lattice mismatch between the InP core and ZnSe shell. In addition to a narrow ensemble photoluminescence (PL) line-width (~ 40 nm), ensemble and single particle emission dynamics measurements indicate that blinking and Auger recombination are reduced in these heterostructures...
December 28, 2017: Nano Letters
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