keyword
MENU ▼
Read by QxMD icon Read
search

Mirror visual feedback

keyword
https://www.readbyqxmd.com/read/29764303/relief-from-intractable-phantom-pain-by-combining-psilocybin-and-mirror-visual-feedback-mvf
#1
Vilayanur Ramachandran, Chaipat Chunharas, Zeve Marcus, Timothy Furnish, Albert Lin
AL's leg was amputated resulting in phantom-limb pain (PLP). (1) When a volunteer placed her foot on or near the phantom - touching it evoked organized sensations in corresponding locations on AL's phantom. (2) Mirror-visual-feedback (MVF) relieved PLP, as did, "phantom massage". (3) Psilocybin-MVF pairing produced synergistic effects, complete elimination of PLP, and reduction in paroxysmal episodes. (4) Touching the volunteer's leg where AL previously had external fixators, evoked sensation of nails boring through the leg...
May 15, 2018: Neurocase
https://www.readbyqxmd.com/read/29715510/hierarchical-organization-within-the-ventral-premotor-cortex-of-the-macaque-monkey
#2
REVIEW
Kiyoshi Kurata
Recent studies have revealed that the ventral premotor cortex (PMv) of nonhuman primates plays a pivotal role in various behaviors that require the transformation of sensory cues to appropriate actions. Examples include decision-making based on various sensory cues, preparation for upcoming motor behavior, adaptive sensorimotor transformation, and the generation of motor commands using rapid sensory feedback. Although the PMv has frequently been regarded as a single entity, it can be divided into at least five functionally distinct regions: F4, a dorsal convexity region immediately rostral to the primary motor cortex (M1); F5p, a cortical region immediately rostral to F4, lying within the arcuate sulcus; F5c, a ventral convexity region rostral to F4; and F5a, located in the caudal bank of the arcuate sulcus inferior limb lateral to F5p...
April 28, 2018: Neuroscience
https://www.readbyqxmd.com/read/29616149/immersive-virtual-reality-therapy-with-myoelectric-control-for-treatment-resistant-phantom-limb-pain-case-report
#3
Brian Chau, Ivan Phelan, Phillip Ta, Sarah Humbert, Justin Hata, Duc Tran
Objective: Phantom limb pain is a condition frequently experienced after amputation. One treatment for phantom limb pain is traditional mirror therapy, yet some patients do not respond to this intervention, and immersive virtual reality mirror therapy offers some potential advantages. We report the case of a patient with severe phantom limb pain following an upper limb amputation and successful treatment with therapy in a custom virtual reality environment. Methods: An interactive 3-D kitchen environment was developed based on the principles of mirror therapy to allow for control of virtual hands while wearing a motion-tracked, head-mounted virtual reality display...
July 2017: Innovations in Clinical Neuroscience
https://www.readbyqxmd.com/read/29556211/deficits-in-visuo-motor-temporal-integration-impacts-manual-dexterity-in-probable-developmental-coordination-disorder
#4
Satoshi Nobusako, Ayami Sakai, Taeko Tsujimoto, Takashi Shuto, Yuki Nishi, Daiki Asano, Emi Furukawa, Takuro Zama, Michihiro Osumi, Sotaro Shimada, Shu Morioka, Akio Nakai
The neurological basis of developmental coordination disorder (DCD) is thought to be deficits in the internal model and mirror-neuron system (MNS) in the parietal lobe and cerebellum. However, it is not clear if the visuo-motor temporal integration in the internal model and automatic-imitation function in the MNS differs between children with DCD and those with typical development (TD). The current study aimed to investigate these differences. Using the manual dexterity test of the Movement Assessment Battery for Children (second edition), the participants were either assigned to the probable DCD (pDCD) group or TD group...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29521681/recovery-in-the-severely-impaired-arm-post-stroke-after-mirror-therapy-a-randomized-controlled-study
#5
Wing Chiu Chan, Stephanie Suk Yin Au-Yeung
OBJECTIVE: This study aimed to examine the effectiveness of mirror therapy (MT) on recovery in the severely impaired arm after stroke. DESIGN: Using single-blind randomized controlled design, patients with severely impaired arm within 1-month post-stroke were assigned to received MT (n=20) or control therapy (CT) (n=21), 30min. twice daily for 4 weeks in addition to conventional rehabilitation. During MT and CT, subjects practiced similar structured exercises in both arms, except that mirror reflection of the unaffected arm was the visual feedback for MT, but mirror was absent for CT so that subjects could watch both arms in exercise...
March 9, 2018: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/29196722/abstract-spatial-but-not-body-related-visual-information-guides-bimanual-coordination
#6
Janina Brandes, Farhad Rezvani, Tobias Heed
Visual spatial information is paramount in guiding bimanual coordination, but anatomical factors, too, modulate performance in bimanual tasks. Vision conveys not only abstract spatial information, but also informs about body-related aspects such as posture. Here, we asked whether, accordingly, visual information induces body-related, or merely abstract, perceptual-spatial constraints in bimanual movement guidance. Human participants made rhythmic, symmetrical and parallel, bimanual index finger movements with the hands held in the same or different orientations...
December 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29184290/kinematic-analysis-of-head-trunk-and-pelvic-motion-during-mirror-therapy-for-stroke-patients
#7
Jinmin Kim, Jaehoon Yi, Chang-Ho Song
[Purpose] The purpose of this study was to investigate mirror therapy (MT) condition by analyzing kinematic parameters according to mirror size and angle. [Subjects and Methods] Three hemiparesis stroke patients and five healthy adults participated in this cross-sectional study. Kinematic parameters during the MT were collected over a total of 5 trials for each subject (3 mirror angles × 3 mirror sizes). Center of pressure (COP) excursion data was collected by force plate, and other kinematic parameters by infra-red cameras...
October 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29178660/motion-contrast-in-primary-visual-cortex-a-direct-comparison-of-single-neuron-and-population-encoding
#8
Sergio Conde-Ocazionez, Tiago S Altavini, Thomas Wunderle, Kerstin E Schmidt
Features from outside the classical receptive field (CRF) can modulate the stimulus-driven activity of single cells in the primary visual cortex. This modulation, mediated by horizontal and feedback networks, has been extensively described as a variation of firing rate and is considered the basis of processing features as, for example, motion contrast. However, surround influences have also been identified in pairwise spiking or local field coherence. Yet, evidence about co-existence and integration of different neural signatures remains elusive...
February 2018: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29161965/i-am-there-%C3%A2-but-not-quite-an-unfaithful-mirror-that-reduces-feelings-of-ownership-and-agency
#9
Noreen O'Sullivan, Christophe de Bezenac, Andrea Piovesan, Hannah Cutler, Rhiannon Corcoran, David Fenyvesi, Marco Bertamini
The experience of seeing one's own face in a mirror is a common experience in daily life. Visual feedback from a mirror is linked to a sense of identity. We developed a procedure that allowed individuals to watch their own face, as in a normal mirror, or with specific distortions (lag) for active movement or passive touch. By distorting visual feedback while the face is being observed on a screen, we document an illusion of reduced embodiment. Participants made mouth movements, while their forehead was touched with a pen...
February 2018: Perception
https://www.readbyqxmd.com/read/29153043/effectiveness-of-mirror-therapy-motor-imagery-and-virtual-feedback-on-phantom-limb-pain-following-amputation-a-systematic-review
#10
Laura Herrador Colmenero, Jose Manuel Perez Marmol, Celia Martí-García, María de Los Ángeles Querol Zaldivar, Rosa María Tapia Haro, Adelaida María Castro Sánchez, María Encarnación Aguilar-Ferrándiz
BACKGROUND: Phantom limb pain is reported in 50%-85% of people with amputation. Clinical interventions in treating central pain, such as mirror therapy, motor imagery, or virtual visual feedback, could redound in benefits to amputee patients with phantom limb pain. OBJECTIVES: To provide an overview of the effectiveness of different techniques for treating phantom limb pain in amputee patients. STUDY DESIGN: Systematic review. METHODS: A computerized literature search up to April 2017 was performed using the following databases: PubMed, Scopus, CINAHL, MEDLINE, ProQuest, PEDro, EBSCOhost, and Cochrane Plus...
November 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/29082635/changing-the-size-of-a-mirror-reflected-hand-does-not-affect-pain-perception-a-repeated-measures-study-on-healthy-human-participants
#11
P G Wittkopf, D M Lloyd, M I Johnson
BACKGROUND: Studies suggest that observing magnified and minified body parts using mirrors, lenses and virtual reality may affect pain perception. However, the direction of effect varies between studies. The aim of the present study was to evaluate the effect of observing a normal-sized, magnified and minified reflection of a hand on perceptual embodiment and contact-heat stimuli. METHODS: Participants (n = 46) observed a normal-sized, magnified and minified reflection of the hand and a no-reflection condition while performing synchronized finger movements for 3 min (adaptive phase)...
March 2018: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/29048009/mems-tracking-mirror-system-for-a-bidirectional-free-space-optical-link
#12
Sungho Jeon, Hiroshi Toshiyoshi
We report on a bidirectional free-space optical system that is capable of automatic connection and tracking of an optical link between two nodes. A piezoelectric micro-electro-mechanical systems (MEMS) optical scanner is used to steer a laser beam of two wavelengths superposed to visually present a communication zone, to search for the position of the remote node by means of the retro-reflector optics, and to transmit the data between the nodes. A feedback system is developed to control the MEMS scanner to dynamically establish the optical link within a 10-ms transition time and to keep track of the moving node...
August 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/29046630/agency-over-phantom-limb-enhanced-by-short-term-mirror-therapy
#13
Shu Imaizumi, Tomohisa Asai, Shinichi Koyama
Most amputees experience phantom limb, whereby they feel that the amputated limb is still present. In some cases, these experiences include pain that can be alleviated by "mirror therapy." Mirror therapy consists of superimposing a mirrored image of the moving intact limb onto the phantom limb. This therapy provides a closed loop between the motor command to the amputated limb and its predicted visual feedback. This loop is also involved in the sense of agency, a feeling of controlling one's own body...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28978349/effects-of-action-observation-therapy-and-mirror-therapy-after-stroke-on-rehabilitation-outcomes-and-neural-mechanisms-by-meg-study-protocol-for-a-randomized-controlled-trial
#14
Tsai-Yu Shih, Ching-Yi Wu, Keh-Chung Lin, Chia-Hsiung Cheng, Yu-Wei Hsieh, Chia-Ling Chen, Chih-Jou Lai, Chih-Chi Chen
BACKGROUND: Loss of upper-extremity motor function is one of the most debilitating deficits following stroke. Two promising treatment approaches, action observation therapy (AOT) and mirror therapy (MT), aim to enhance motor learning and promote neural reorganization in patients through different afferent inputs and patterns of visual feedback. Both approaches involve different patterns of motor observation, imitation, and execution but share some similar neural bases of the mirror neuron system...
October 4, 2017: Trials
https://www.readbyqxmd.com/read/28728802/-psychotherapies-for-the-treatment-of-phantom-limb-pain
#15
Katherine Cárdenas, Mariana Aranda
INTRODUCTION: The phantom limb pain has been described as a condition in which patients experience a feeling of itching, spasm or pain in a limb or body part that has been previously amputated. Such pain can be induced by a conflict between the representation of the visual and proprioceptive feedback of the previously healthy limb. The phantom limb pain occurs in at least 42 to 90% of amputees. Regular drug treatment of phantom limb pain is almost never effective. METHODS: A systematic review of the literature was conducted in Medline and Cochrane using the MESH terms "phantom limb pain" and "psychotherapy", published in the last 10 years, in English and Spanish, finding 49 items...
July 2017: Revista Colombiana de Psiquiatría
https://www.readbyqxmd.com/read/28698615/influence-of-the-body-schema-on-multisensory-integration-evidence-from-the-mirror-box-illusion
#16
Yuqi Liu, Jared Medina
When placing one hand on each side of a mirror and making synchronous bimanual movements, the mirror-reflected hand feels like one's own hand that is hidden behind the mirror. We developed a novel mirror box illusion to investigate whether motoric, but not spatial, visuomotor congruence is sufficient for inducing multisensory integration, and importantly, if biomechanical constraints encoded in the body schema influence multisensory integration. Participants placed their hands in a mirror box in opposite postures (palm up, palm down), creating a conflict between visual and proprioceptive feedback for the hand behind the mirror...
July 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28694676/3d-augmented-reality-mirror-visual-feedback-therapy-applied-to-the-treatment-of-persistent-unilateral-upper-extremity-neuropathic-pain-a-preliminary-study
#17
Dominique Mouraux, Eric Brassinne, Stéphane Sobczak, Antoine Nonclercq, Nadine Warzée, Phillip S Sizer, Turgay Tuna, Benoît Penelle
Objective: We assessed whether or not pain relief could be achieved with a new system that combines 3D augmented reality system (3DARS) and the principles of mirror visual feedback. Methods: Twenty-two patients between 18 and 75 years of age who suffered of chronic neuropathic pain. Each patient performed five 3DARS sessions treatment of 20 mins spread over a period of one week. The following pain parameters were assessed: (1) visual analogic scale after each treatment session (2) McGill pain scale and DN4 questionnaire were completed before the first session and 24 h after the last session...
July 2017: Journal of Manual & Manipulative Therapy
https://www.readbyqxmd.com/read/28648411/visual-feedback-explains-why-propointing-is-better-than-antipointing-in-spatial-neglect
#18
Kathrin S Utz, Constanze Hesse, Annika Hintz, Daniela Grüneberger, Hartwig Kulke, Inga Roth, Thomas Klos, Vaclav Kromichal, Arthur Melms, Wilfried Schupp, Detlef Kohl, Thomas Schenk
Rossit et al. (2011) showed that neglect patients perform normally in a propointing task but not in an antipointing task which requires pointing towards the mirrored position of a target. It is assumed that antipointing relies on information from the perceptual pathway of our visual brain. Therefore, this finding supports the notion that neglect is a disorder that primarily affects perceptual spatial representations within the brain leaving spatial maps used for visuomotor guidance intact. Alternatively, performance of patients might be compromised in both tasks, but only obviously so in tasks in which online corrections are made more difficult...
January 2018: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28610466/the-effect-of-practice-and-visual-feedback-on-oral-diadochokinetic-rates-for-younger-and-older-adults
#19
Boaz M Ben-David, Michal Icht
Assessments of oral-diadochokinetic rates are commonly performed to evaluate oral-motor skills. However, the appropriate administration protocol is not defined, and varies across therapists, clinics and laboratories. In three experiments and an auxiliary one, this study analyzes the effects of brief (motor) practice and visual feedback on the performance of 98 younger (20-40 years old) and 78 older adults (over 65) with the sequential motion rate (SMR) version. Overall rates were significantly faster for younger over older adults...
March 2018: Language and Speech
https://www.readbyqxmd.com/read/28553218/the-effects-of-mirror-feedback-during-target-directed-movements-on-ipsilateral-corticospinal-excitability
#20
Mathew Yarossi, Thushini Manuweera, Sergei V Adamovich, Eugene Tunik
Mirror visual feedback (MVF) training is a promising technique to promote activation in the lesioned hemisphere following stroke, and aid recovery. However, current outcomes of MVF training are mixed, in part, due to variability in the task undertaken during MVF. The present study investigated the hypothesis that movements directed toward visual targets may enhance MVF modulation of motor cortex (M1) excitability ipsilateral to the trained hand compared to movements without visual targets. Ten healthy subjects participated in a 2 × 2 factorial design in which feedback (veridical, mirror) and presence of a visual target (target present, target absent) for a right index-finger flexion task were systematically manipulated in a virtual environment...
2017: Frontiers in Human Neuroscience
keyword
keyword
103175
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"