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https://www.readbyqxmd.com/read/28446896/fixation-patterns-of-chinese-participants-while-identifying-facial-expressions-on-chinese-faces
#1
Mu Xia, Xueliu Li, Haiqing Zhong, Hong Li
Two experiments in this study were designed to explore a model of Chinese fixation with four types of native facial expressions-happy, peaceful, sad, and angry. In both experiments, participants performed an emotion recognition task while their behaviors and eye movements were recorded. Experiment 1 (24 participants, 12 men) demonstrated that both eye fixations and durations were lower for the upper part of the face than for the lower part of the face for all four types of facial expression. Experiment 2 (20 participants, 6 men) repeated this finding and excluded the disturbance of fixation point...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28428919/tibial-bone-grafting-for-wrist-reconstruction
#2
Schneider K Rancy, Stephanie D Malliaris, Scott W Wolfe
Background Iliac crest bone graft harvesting is routinely performed for upper extremity orthopedic procedures despite high complication rates associated with sensory nerve injury, hematoma, chronic pain, and fracture. Description of Technique Cancellous bone graft is harvested from the proximal tibia using a medial approach, minimizing donor site morbidity. Patients and Methods A retrospective review was undertaken of 14 patients who underwent cancellous proximal tibia bone graft harvesting to augment healing of wrist reconstruction, with 2 months minimum follow-up...
May 2017: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/28391213/integration-of-low-power-asic-and-mems-sensors-for-monitoring-gastrointestinal-tract-using-a-wireless-capsule-system
#3
Md Shamsul Arefin, Jean-Michel Redoute, Mehmet Yuce
This paper presents a wireless capsule microsystem to detect and monitor pH, pressure, and temperature of the gastrointestinal (GI) tract in real-time. This research contributes to the integration of sensors (microfabricated capacitive pH, capacitive pressure, and resistive temperature sensors), frequency modulation and pulse-width modulation based interface IC circuits, microcontroller, and transceiver with meandered conformal antenna for the development of a capsule system. The challenges associated with the system miniaturization, higher sensitivity and resolution of sensors, and lower power consumption of interface circuits are addressed...
April 4, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28319191/overt-orienting-of-spatial-attention-and-corticospinal-excitability-during-action-observation-are-unrelated
#4
Sonia Betti, Umberto Castiello, Silvia Guerra, Luisa Sartori
Observing moving body parts can automatically activate topographically corresponding motor representations in the primary motor cortex (M1), the so-called direct matching. Novel neurophysiological findings from social contexts are nonetheless proving that this process is not automatic as previously thought. The motor system can flexibly shift from imitative to incongruent motor preparation, when requested by a social gesture. In the present study we aim to bring an increase in the literature by assessing whether and how diverting overt spatial attention might affect motor preparation in contexts requiring interactive responses from the onlooker...
2017: PloS One
https://www.readbyqxmd.com/read/28245990/hard-wired-feed-forward-visual-mechanisms-of-the-brain-compensate-for-affine-variations-in-object-recognition
#5
Hamid Karimi-Rouzbahani, Nasour Bagheri, Reza Ebrahimpour
Humans perform object recognition effortlessly and accurately. However, it is unknown how the visual system copes with variations in objects' appearance and the environmental conditions. Previous studies have suggested that affine variations such as size and position are compensated for in the feed-forward sweep of visual information processing while feedback signals are needed for precise recognition when encountering non-affine variations such as pose and lighting. Yet, no empirical data exist to support this suggestion...
February 27, 2017: Neuroscience
https://www.readbyqxmd.com/read/28122925/interprofessional-primary-care-team-meetings-a-qualitative-approach-comparing-observations-with-personal-opinions
#6
Jerôme Jean Jacques van Dongen, Marloes Amantia van Bokhoven, Ramon Daniëls, Stephanie Anna Lenzen, Trudy van der Weijden, Anna Beurskens
BACKGROUND: The number of people with multiple chronic conditions requiring primary care services increases. Professionals from different disciplines collaborate and coordinate care to deal with the complex health care needs. There is lack of information on current practices regarding interprofessional team (IPT) meetings. OBJECTIVES: This study aimed to improve our understanding of the process of interprofessional collaboration in primary care team meetings in the Netherlands by observing the current practice and exploring personal opinions...
February 2017: Family Practice
https://www.readbyqxmd.com/read/28028495/evaluation-of-a-low-cost-and-low-noise-active-dry-electrode-for-long-term-biopotential-recording
#7
Ali Pourahmad, Amin Mahnam
Wet Ag/AgCl electrodes, although very popular in clinical diagnosis, are not appropriate for expanding applications of wearable biopotential recording systems which are used repetitively and for a long time. Here, the development of a low-cost and low-noise active dry electrode is presented. The performance of the new electrodes was assessed for recording electrocardiogram (ECG) and electroencephalogram (EEG) in comparison with that of typical gel-based electrodes in a series of long-term recording experiments...
October 2016: Journal of Medical Signals and Sensors
https://www.readbyqxmd.com/read/28000422/secondary-analysis-of-data-can-inform-care-delivery-for-indigenous-women-in-an-acute-mental-health-inpatient-unit
#8
Pat Bradley, Teresa Cunningham, Anne Lowell, Tricia Nagel, Sandra Dunn
There is a paucity of research exploring Indigenous women's experiences in acute mental health inpatient services in Australia. Even less is known of Indigenous women's experience of seclusion events, as published data are rarely disaggregated by both indigeneity and gender. This research used secondary analysis of pre-existing datasets to identify any quantifiable difference in recorded experience between Indigenous and non-Indigenous women, and between Indigenous women and Indigenous men in an acute mental health inpatient unit...
December 21, 2016: International Journal of Mental Health Nursing
https://www.readbyqxmd.com/read/27909534/efficacy-and-safety-of-implantable-loop-recorder-experience-of-a-center
#9
Inês Silveira, Maria João Sousa, Nuno Antunes, Vânia Silva, Carla Roque, António Pinheiro-Vieira, Vítor Lagarto, António Hipólito-Reis, André Luz, Severo Torres
Introduction: Symptoms like syncope or palpitations frequently present a diagnostic challenge. An implantable loop recorder (ILR) is an important aid in the management of these patients. Methods: A retrospective study of patients that underwent ILR implantation from November 2007 to 2014. For each patient the indication for implantation, baseline characteristics, previous study, complications, recorded tracing and interventions were evaluated. Results: A total of 62 patients were included, 50% men, with a mean age of 62...
August 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27827893/in-vivo-neural-recording-and-electrochemical-performance-of-microelectrode-arrays-modified-by-rough-surfaced-aupt-alloy-nanoparticles-with-nanoporosity
#10
Zongya Zhao, Ruxue Gong, Liang Zheng, Jue Wang
In order to reduce the impedance and improve in vivo neural recording performance of our developed Michigan type silicon electrodes, rough-surfaced AuPt alloy nanoparticles with nanoporosity were deposited on gold microelectrode sites through electro-co-deposition of Au-Pt-Cu alloy nanoparticles, followed by chemical dealloying Cu. The AuPt alloy nanoparticles modified gold microelectrode sites were characterized by scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) and in vivo neural recording experiment...
November 3, 2016: Sensors
https://www.readbyqxmd.com/read/27578359/interspecific-comparison-of-traffic-noise-effects-on-dove-coo-transmission-in-urban-environments
#11
Bao-Sen Shieh, Shih-Hsiung Liang, Yuh-Wen Chiu, Szu-Ying Lin
Most previous studies concerning avian adaptation to anthropogenic noise have focused on songbirds, but few have focused on non-songbirds commonly found in urban environments such as doves. We conducted field playback-recording experiments on the perch-coos of five dove species, including four native Taiwan species (the spotted dove, Spilopelia chinensis, the oriental turtle-dove, Streptopelia orientalis, the red collared-dove, Streptopelia tranquebarica, and the emerald dove, Chalcophaps indica) and one species not native to Taiwan (the zebra dove, Geopelia striata) to evaluate the detection and recognition of dove coos in habitats with differing levels of traffic noise...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27554486/hunger-neurons-drive-feeding-through-a-sustained-positive-reinforcement-signal
#12
Yiming Chen, Yen-Chu Lin, Christopher A Zimmerman, Rachel A Essner, Zachary A Knight
The neural mechanisms underlying hunger are poorly understood. AgRP neurons are activated by energy deficit and promote voracious food consumption, suggesting these cells may supply the fundamental hunger drive that motivates feeding. However recent in vivo recording experiments revealed that AgRP neurons are inhibited within seconds by the sensory detection of food, raising the question of how these cells can promote feeding at all. Here we resolve this paradox by showing that brief optogenetic stimulation of AgRP neurons before food availability promotes intense appetitive and consummatory behaviors that persist for tens of minutes in the absence of continued AgRP neuron activation...
August 24, 2016: ELife
https://www.readbyqxmd.com/read/27497934/cholecystokinin-33-but-not-cholecystokinin-8-shows-gastrointestinal-site-specificity-in-regulating-feeding-behaviors-in-male-rats
#13
Martha C Washington, Thaer R Mhalhal, Ayman I Sayegh
Two separate experiments were performed to localize the gastrointestinal sites of action regulating meal size (MS), intermeal interval (IMI) length and satiety ratio (SR, IMI/MS) by cholecystokinin (CCK) 8 and 33. Experiment 1: CCK-8 (0, 0.05, 0.15, 0.25nmol/kg) was infused in the celiac artery (CA, supplies stomach and upper duodenum) or the cranial mesenteric artery (CMA, supplies small and part of the large intestine) prior to the onset of the dark cycle in free feeding, male Sprague Dawley rats and MS (normal rat chow), IMI and SR were recorded...
September 2016: Hormones and Behavior
https://www.readbyqxmd.com/read/27194028/perfused-drop-microfluidic-device-for-brain-slice-culture-based-drug-discovery
#14
Jing Liu, Liping Pan, Xuanhong Cheng, Yevgeny Berdichevsky
Living slices of brain tissue are widely used to model brain processes in vitro. In addition to basic neurophysiology studies, brain slices are also extensively used for pharmacology, toxicology, and drug discovery research. In these experiments, high parallelism and throughput are critical. Capability to conduct long-term electrical recording experiments may also be necessary to address disease processes that require protein synthesis and neural circuit rewiring. We developed a novel perfused drop microfluidic device for use with long term cultures of brain slices (organotypic cultures)...
June 2016: Biomedical Microdevices
https://www.readbyqxmd.com/read/27154409/antihypertensive-activity-of-80-methanol-seed-extract-of-calpurnia-aurea-ait-benth-subsp-aurea-fabaceae-is-mediated-through-calcium-antagonism-induced-vasodilation
#15
COMPARATIVE STUDY
Yohannes Getiye, Tesfaye Tolessa, Ephrem Engidawork
ETHNOPHARMACOLOGICAL RELEVANCE: Calpurnia aurea (Ait.) Benth. subsp. aurea (CASA) (Fabaceae) seeds are used to treat hypertension in Ethiopian folklore medicine, particularly by Shinasha, Agew-awi and Amhara people in northwest Ethiopia. However, the claim has so far not been substantiated scientifically. AIM OF THE STUDY: The study was conducted to evaluate the antihypertensive activity of 80% methanol extract of CASA in animal model of hypertension as well as its vasorelaxant effect and possible underlying mechanisms in isolated guinea pig aorta...
August 2, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27132241/low-profile-halo-head-fixation-in-non-human-primates
#16
Kousha Azimi, Ian A Prescott, Robert A Marino, Andrew Winterborn, Ron Levy
BACKGROUND: We present a new halo technique for head fixation of non-human primates during electrophysiological recording experiments. Our aim was to build on previous halo designs in order to create a simple low profile system that provided long-term stability. NEW METHOD: Our design incorporates sharp skull pins that are directly threaded through a low set halo frame and are seated into implanted titanium foot plates on the skull. The inwardly directed skull pins provide an easily calibrated force against the skull...
August 1, 2016: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/27106483/phrenic-motor-outputs-in-response-to-bronchopulmonary-c-fibre-activation-following-chronic-cervical-spinal-cord-injury
#17
Kun-Ze Lee
KEY POINTS: Activation of bronchopulmonary C-fibres, the main chemosensitive afferents in the lung, can induce pulmonary chemoreflexes to modulate respiratory activity. Following chronic cervical spinal cord injury, bronchopulmonary C-fibre activation-induced inhibition of phrenic activity was exaggerated. Supersensitivity of phrenic motor outputs to the inhibitory effect of bronchopulmonary C-fibre activation is due to a shift of phrenic motoneuron types and slow recovery of phrenic motoneuron discharge in cervical spinal cord-injured animals...
October 15, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/27064599/forgetting-no-longer-relevant-prospective-memory-intentions-is-sometimes-harder-with-age-but-easier-with-forgetting-practice
#18
Julie M Bugg, Michael K Scullin, Rachel S Rauvola
In young adults, it has been shown that prospective memory (PM) commission errors, the erroneous performance of a previously relevant intention, are less likely for repeatedly performed intentions (than never performed intentions). We examined whether this pattern holds for older adults, for whom impaired response inhibition processes might heighten risk of commission errors for repeatedly performed PM intentions. Older adults encoded a PM intention to press a key when a target word appeared during an ongoing lexical decision task...
2016: Psychology and Aging
https://www.readbyqxmd.com/read/27040777/rapid-integration-of-tactile-and-visual-information-by-a-newly-sighted-child
#19
Jie Chen, En-De Wu, Xin Chen, Lu-He Zhu, Xiaoman Li, Frank Thorn, Yuri Ostrovsky, Jia Qu
How we learn to interact with and understand our environment for the first time is an age-old philosophical question. Scientists have long sought to understand what is the origin of egocentric spatial localization and the perceptual integration of touch and visual information. It is difficult to study the beginnings of intermodal visual-motor and visual-tactile linkages in early infancy since infants' muscular strength and control cannot accurately guide visual-motor behavior and they do not concentrate well [1-6]...
April 25, 2016: Current Biology: CB
https://www.readbyqxmd.com/read/26986214/when-geometry-constrains-vision-systematic-misperceptions-within-geometrical-configurations
#20
Natale Stucchi, Lisa Scocchia, Alessandro Carlini
How accurate are we in reproducing a point within a simple shape? This is the empirical question we addressed in this work. Participants were presented with a tiny disk embedded in an empty circle (Experiment 1 and 3) or in a square (Experiment 2). Shortly afterwards the disk vanished and they had to reproduce the previously seen disk position within the empty shape by means of the mouse cursor, as accurately as possible. Several loci inside each shape were tested. We found that the space delimited by a circle and by a square is not homogeneous and the observed distortion appears to be consistent across observers and specific for the two tested shapes...
2016: PloS One
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