keyword
MENU ▼
Read by QxMD icon Read
search

visual feedback

keyword
https://www.readbyqxmd.com/read/28074913/auditory-localisation-biases-increase-with-sensory-uncertainty
#1
Sara E Garcia, Pete R Jones, Gary S Rubin, Marko Nardini
Psychophysical studies have frequently found that adults with normal hearing exhibit systematic errors (biases) in their auditory localisation judgments. Here we tested (i) whether systematic localisation errors could reflect reliance on prior knowledge, as has been proposed for other systematic perceptual biases, and (ii) whether auditory localisation biases can be reduced following training with accurate visual feedback. Twenty-four normal hearing participants were asked to localise the position of a noise burst along the azimuth before, during, and after training with visual feedback...
January 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28070622/haptic-feedback-attenuates-illusory-bias-in-pantomime-grasping-evidence-for-a-visuo-haptic-calibration
#2
Jillian Chan, Matthew Heath
Relative visual information has been shown to mediate grasping responses directed to an area previously occupied by a target object (i.e., pantomime-grasping) and is an information type functionally distinct from the absolute visual information supporting naturalistic grasping (i.e., grasping a physical target). Pantomime- and naturalistic grasps differ not only in terms of their visual properties, but also because the former lacks physical interaction with a target object (i.e., no-haptic feedback). The absence of haptic feedback may represent a reason why pantomime- and naturalistic grasps differ...
January 9, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28068514/interpersonal-interactions-for-haptic-guidance-during-maximum-forward-reaching
#3
S M Steinl, L Johannsen
Caregiver-patient interactions rely on interpersonal coordination (IPC) involving the haptic and visual modalities. We investigated in healthy individuals spontaneous IPC during joint maximum forward reaching. A 'contact-provider' (CP; n=2) kept light interpersonal touch (IPT) laterally with the wrist of the extended arm of a forward reaching, blind-folded 'contact-receiver' (CR; n=22). Due to the stance configuration, CP was intrinsically more stable. CR received haptic feedback during forward reaching in two ways: (1) presence of a light object (OBT) at the fingertips, (2) provision of IPT...
December 30, 2016: Gait & Posture
https://www.readbyqxmd.com/read/28066520/gait-training-interventions-for-lower-extremity-amputees-a-systematic-literature-review
#4
M Jason Highsmith, Casey R Andrews, Claire Millman, Ashley Fuller, Jason T Kahle, Tyler D Klenow, Katherine L Lewis, Rachel C Bradley, John J Orriola
Lower extremity (LE) amputation patients who use prostheses have gait asymmetries and altered limb loading and movement strategies when ambulating. Subsequent secondary conditions are believed to be associated with gait deviations and lead to long-term complications that impact function and quality of life as a result. The purpose of this study was to systematically review the literature to determine the strength of evidence supporting gait training interventions and to formulate evidence statements to guide practice and research related to therapeutic gait training for lower extremity amputees...
September 2016: Technology and Innovation
https://www.readbyqxmd.com/read/28065472/adaptive-changes-in-running-kinematics-as-a-function-of-head-stability-demands-and-their-effect-on-shock-transmission
#5
Jongil Lim, Michael A Busa, Richard E A van Emmerik, Joseph Hamill
This study aimed to identify adaptive changes in running kinematics and impact shock transmission as a function of head stability requirements. Fifteen strides from twelve recreational runners were collected during preferred speed treadmill running. Head stability demands were manipulated through real-time visual feedback that required head-gaze orientation to maintain within boxes of different sizes, ranging from 21° to 3° of visual angle with 3° decrements. The main outcome measures were tibial and head peak accelerations in the time and frequency domains (impact and active phases), shock transmission from tibia to head, stride parameters, and sagittal plane joint kinematics...
December 29, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/28065330/impact-of-personalized-report-cards-on-nurses-managing-central-lines
#6
Theresa Morrison, Jacqueline Raffaele, Laura Brennaman
BACKGROUND: The purpose of this quality improvement project was to determine the effect of providing feedback to managers and bedside nurses on the nurses' central line-associated bloodstream infection (CLABSI) contributing factors, found on visual and documentation audits. METHODS: This nonexperimental, quality improvement project was conducted in a 715-bed, 2-campus acute care community hospital health care system in Southwest Florida. The intervention consisted of providing confidential feedback on central line audits deviations, through the systematic delivery of unit case reports and personalized nurse report cards...
January 1, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28061429/the-not-so-strange-body-in-the-mirror-a-principal-components-analysis-of-direct-and-mirror-self-observation
#7
Paul M Jenkinson, Catherine Preston
In this study we adopted a psychometric approach to examine how the body is subjectively experienced in a mirror. One hundred and twenty-four healthy participants viewed their body for five minutes directly or via a mirror, and then completed a 20-item questionnaire designed to capture subjective experiences of the body. PCA revealed a two-component structure for both direct and mirror conditions, comprising body evaluations (and alienation) and unusual feelings and perceptions. The relationship between these components and pre-existing tendencies for appearance anxiety, body dysmorphic-type beliefs, dissociative symptomatology, self-objectification and delusion ideation further supported the similarity between direct and mirror conditions; however, the occurrence of strange experiences like those reported to occur during prolonged face viewing was not confirmed...
January 3, 2017: Consciousness and Cognition
https://www.readbyqxmd.com/read/28060782/high-density-emg-reveals-novel-evidence-of-altered-masseter-muscle-activity-during-symmetrical-and-asymmetrical-bilateral-jaw-clenching-tasks-in-people-with-chronic-nonspecific-neck-pain
#8
Marco Testa, Tommaso Geri, Leonardo Gizzi, Deborah Falla
OBJECTIVES: To characterize the distribution of masseter muscle activity and force control during bilateral jaw clenching tasks in people with chronic nonspecific neck pain, without an associated temporomandibular disorder. METHODS: Twelve volunteers with nonspecific neck pain and 12 age-matched and sex-matched healthy individuals participated. Submaximal symmetrical and asymmetrical bilateral jaw clenching was performed with and without visual feedback of force...
February 2017: Clinical Journal of Pain
https://www.readbyqxmd.com/read/28059065/rapid-control-and-feedback-rates-enhance-neuroprosthetic-control
#9
Maryam M Shanechi, Amy L Orsborn, Helene G Moorman, Suraj Gowda, Siddharth Dangi, Jose M Carmena
Brain-machine interfaces (BMI) create novel sensorimotor pathways for action. Much as the sensorimotor apparatus shapes natural motor control, the BMI pathway characteristics may also influence neuroprosthetic control. Here, we explore the influence of control and feedback rates, where control rate indicates how often motor commands are sent from the brain to the prosthetic, and feedback rate indicates how often visual feedback of the prosthetic is provided to the subject. We developed a new BMI that allows arbitrarily fast control and feedback rates, and used it to dissociate the effects of each rate in two monkeys...
January 6, 2017: Nature Communications
https://www.readbyqxmd.com/read/28056109/postural-ataxia-in-cerebellar-downbeat-nystagmus-its-relation-to-visual-proprioceptive-and-vestibular-signals-and-cerebellar-atrophy
#10
Christoph Helmchen, Jan-Birger Kirchhoff, Martin Göttlich, Andreas Sprenger
BACKGROUND: The cerebellum integrates proprioceptive, vestibular and visual signals for postural control. Cerebellar patients with downbeat nystagmus (DBN) complain of unsteadiness of stance and gait as well as blurred vision and oscillopsia. OBJECTIVES: The aim of this study was to elucidate the differential role of visual input, gaze eccentricity, vestibular and proprioceptive input on the postural stability in a large cohort of cerebellar patients with DBN, in comparison to healthy age-matched control subjects...
2017: PloS One
https://www.readbyqxmd.com/read/28056023/short-term-motor-skill-acquisition-improves-with-size-of-self-controlled-virtual-hands
#11
Ori Ossmy, Roy Mukamel
Visual feedback in general, and from the body in particular, is known to influence the performance of motor skills in humans. However, it is unclear how the acquisition of motor skills depends on specific visual feedback parameters such as the size of performing effector. Here, 21 healthy subjects physically trained to perform sequences of finger movements with their right hand. Through the use of 3D Virtual Reality devices, visual feedback during training consisted of virtual hands presented on the screen, tracking subject's hand movements in real time...
2017: PloS One
https://www.readbyqxmd.com/read/28048456/su-a-bra-04-incorporating-active-learning-into-medical-physics-education
#12
J Burmeister
: Vic Montemayor - No one has been more passionate about improving the quality and effectiveness of the teaching of Medical Physics than Bill Hendee. It was in August of 2008 that the first AAPM Workshop on Becoming a Better Teacher of Medical Physics was held, organized and run by Bill Hendee. This was followed up in July of 2010 with a summer school on the same topic, again organized by Bill. There has been continued interest in alternate approaches to teaching medical physics since those initial gatherings...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048389/su-g-jep3-10-update-on-a-real-time-treatment-guidance-system-using-an-ir-navigation-system-for-pleural-pdt
#13
M Kim, R Penjweini, T Zhu
PURPOSE: Photodynamic therapy (PDT) is used in conjunction with surgical debulking of tumorous tissue during treatment for pleural mesothelioma. One of the key components of effective PDT is uniform light distribution. Currently, light is monitored with 8 isotropic light detectors that are placed at specific locations inside the pleural cavity. A tracking system with real-time feedback software can be utilized to improve the uniformity of light in addition to the existing detectors. METHODS: An infrared (IR) tracking camera is used to monitor the movement of the light source...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048139/su-f-j-227-accuracy-of-passive-magnetic-ultrasound-needle-guidance-in-high-fidelity-conventional-and-novel-simulated-block-approach-phantoms
#14
A Johnson
PURPOSE: The objective of this research was to demonstrate accuracy of a real-time passive ultrasound magnetic needle guidance technology (NGT) and target localization algorithm using conventional anechogenic contact phantoms and a novel fluid-filled hyperechogenic phantom simulating nerve block technique. METHODS: Accuracy (mm to phantom target) was assessed by observing 35 medical practitioners (16 anesthesiologists and 19 residents) performing 560 needle procedures in high-fidelity ex vivo porcine tissue phantoms...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047802/su-a-bra-05-panel-discussion
#15
V Montemayor
: Vic Montemayor - No one has been more passionate about improving the quality and effectiveness of the teaching of Medical Physics than Bill Hendee. It was in August of 2008 that the first AAPM Workshop on Becoming a Better Teacher of Medical Physics was held, organized and run by Bill Hendee. This was followed up in July of 2010 with a summer school on the same topic, again organized by Bill. There has been continued interest in alternate approaches to teaching medical physics since those initial gatherings...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047689/su-a-bra-01-introduction
#16
V Montemayor
: Vic Montemayor - No one has been more passionate about improving the quality and effectiveness of the teaching of Medical Physics than Bill Hendee. It was in August of 2008 that the first AAPM Workshop on Becoming a Better Teacher of Medical Physics was held, organized and run by Bill Hendee. This was followed up in July of 2010 with a summer school on the same topic, again organized by Bill. There has been continued interest in alternate approaches to teaching medical physics since those initial gatherings...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047435/mo-de-bra-06-3d-image-acquisition-and-reconstruction-explained-with-online-animations
#17
A Kesner
PURPOSE: Understanding the principles of 3D imaging and image reconstruction is fundamental to the field of medical imaging. Clinicians, technologists, physicists, patients, students, and inquisitive minds all stand to benefit from greater comprehension of the supporting technologies. To help explain the basic principles of 3D imaging, we developed multi-frame animations that convey the concepts of tomographic imaging. The series of free (gif) animations are accessible online, and provide a multimedia introduction to the main concepts of image reconstruction...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047377/mo-fg-202-02-automated-plan-quality-assurance-integrated-with-eclipse-using-varian-s-esapi-interface
#18
E Schreibmann, I Crocker, A Dhabaan, E Elder
PURPOSE: Treatment plan compliance to physician's intent is still assessed by hand in clinical practice by visually comparing prescription details against corresponding plan values. We report on a script that uses the Varian's programming interface to automate the scoring of treatment plan dose values to the physician's prescribed constraints. METHODS: The Eclipse Scripting Advance Programming Interface (ESAPI) is a FDA-approved scripting environment written in C# that allows programming access to a patient's record in Aria and Eclipse...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047040/su-a-bra-02-making-the-most-of-a-one-hour-lecture-with-alternative-teaching-methodologies-implementing-project-based-and-flipped-learning
#19
R Howell
: Vic Montemayor - No one has been more passionate about improving the quality and effectiveness of the teaching of Medical Physics than Bill Hendee. It was in August of 2008 that the first AAPM Workshop on Becoming a Better Teacher of Medical Physics was held, organized and run by Bill Hendee. This was followed up in July of 2010 with a summer school on the same topic, again organized by Bill. There has been continued interest in alternate approaches to teaching medical physics since those initial gatherings...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046867/su-f-p-06-moving-from-computed-radiography-to-digital-radiography-a-collaborative-approach-to-improve-image-quality
#20
D Sandoval, D Valenti, T Bateman, V Norris, G Mlady, R Selwyn
PURPOSE: To bring together radiologists, technologists, and physicists to utilize post-processing techniques in digital radiography (DR) in order to optimize image acquisition and improve image quality. METHODS: Sub-optimal images acquired on a new General Electric (GE) DR system were flagged for follow-up by radiologists and reviewed by technologists and medical physicists. Various exam types from adult musculoskeletal (n=35), adult chest (n=4), and pediatric (n=7) were chosen for review...
June 2016: Medical Physics
keyword
keyword
104415
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"