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At least 163 records · Page 9Linked to original sources
PubMed2003

Verbal actions of physiotherapists to enhance motor learning in children with DCD.

In this study, the motor teaching principles taxonomy (MTPT) was developed to investigate which teaching principles physiotherapists use to treat children with developmental coordination disorder during Neuromotor Task Training (NTT). In NTT, special attention is paid to the best ways to instruct and provide feedback. Based on motor learning theory and video observations of NTT treatments, teaching principles aimed at improving motor learning were categorised into three categories: giving instruction, providing or asking feedback, and sharing knowledge. The MTPT's reliability and validity were satisfactory. Therapists gave instructions very frequently. In addition, the principle frequency showed hardly any correlation with the children's initial motor performance level, indicating that the principles used are not related to the child's entry level.

Child↗
PubMed2001

Teaching future professors how to teach.

This paper describes a course designed to provide hands-on teaching experience to future professors and to incorporate techniques for more effective teaching. A team of Ph.D. candidates, under the direction of a senior faculty member, prepared a new course from beginning to end and then offered it to a class of graduate students. The course was developed using the unit map concept so that the presentations by the five student-instructors complemented and built upon one another. Immediately after each class, feedback was given to the student-instructors by the faculty advisor and the other student-instructors. Review of video tapes of the lecture reinforced this feedback. At the completion of the course, both students and student-instructors were surveyed as to the effectiveness of the course and the student-instructors. This teaching experience and the feedback obtained from the surveys will be invaluable to the student-instructors in their future development.

Conservation of Natural Resources↗
PubMed1992

Effects of video-assisted training on employment-related social skills of adults with severe mental retardation.

Two studies investigated effects of video-assisted training on employment-related social skills of adults with severe mental retardation. In video-assisted training, participants discriminated a model's behavior on videotape and received feedback from the trainer for responses to questions about video scenes. In the first study, 3 adults in an employment program participated in video-assisted training to request their supervisor's assistance when encountering work problems. Results indicated that participants discriminated the target behavior on video but effects did not generalize to the work setting for 2 participants until they rehearsed the behavior. In the second study, 2 participants were taught to fix and report four work problems using video-assisted procedures. Results indicated that after participants rehearsed how to fix and report one or two work problems, they began to fix and report the remaining problems with video-assisted training alone.

Adult↗
PubMed2003

Teaching with a video system improves the training period but not subsequent success of tracheal intubation with the Bullard laryngoscope.

BACKGROUND: The Bullard laryngoscope is useful for the management of a variety of airway management scenarios. Without the aid of a video system, teaching laryngoscopy skills occurs with indirect feedback to the instructor. The purpose of this study was to determine if use of a video system would speed the process of learning the Bullard laryngoscope or improve the performance (speed or success) of its use. METHODS: Thirty-six anesthesia providers with no previous Bullard laryngoscope experience were randomly divided into two groups: initial training (first 15 intubations) with looking directly through the eyepiece (n = 20), or with the display of the scope on a video monitor (n = 16). The subjects each then performed 15 Bullard intubations by looking directly through the eyepiece. RESULTS: There was not an overall significant difference in laryngoscopy or intubation times between the groups. When only the first 15 intubations were considered, the laryngoscopy time was shorter in the video group (26 +/- 24) than in the nonvideo group (32 +/- 34; P< 0.04). In the first 15 patients, there were fewer single attempts at intubation (67.9% vs 80.3%; P< 0.002) and more failed intubations (17.2% vs 6.0%; P< 0.0001) in the nonvideo group. CONCLUSIONS: In conclusion, the authors have shown that use of a video camera decreases time for laryngoscopic view and improves success rate when the Bullard laryngoscope is first being taught to experienced clinicians. However, these benefits are not evident as more experience with the Bullard laryngoscope is achieved, such that no difference in skill with the Bullard laryngoscope is discernible after 15 intubations whether a video system was used to teach this technique.

Female↗
PubMed1999

Recording skills practice on videotape can enhance learning - a comparative study between nurse lecturers and nursing students.

Video recording techniques have been used in educational settings for a number of years. They have included viewing video taped lessons, using whole videos or clips of tapes as a trigger for discussion, viewing video recordings to observe role models for practice, and being video recorded in order to receive feedback on performance from peers and tutors. Although this last application has been in use since the 1960s, it has only been evaluated as a teaching method with health care professionals in the past 10 years and mostly in the areas of medical and counsellor education. In nurse education, however, use of video recording techniques has been advocated without any empirical evidence on its efficacy. This study has used nursing degree students and nurse educationalists to categorize statements from four cohorts of students who took part in a 12-day clinical supervision course during which their interpersonal skills were recorded on videotape. There were two categories: positive and negative/neutral. Analysis of the data showed that between 61% and 72% of the subjects gave an overall positive categorization to the statements in the questionnaire. Chi-square tests were significant for all groups in both categories. This suggests that both nursing students and nurse lecturers thought that course participants' statements expressed a positive belief that video tape recording is useful in enhancing students' ability to learn effective interpersonal skills in clinical supervision.

Adult↗
PubMed1999

Computer-assisted health counselor visits: a low-cost model for comprehensive adolescent preventive services.

OBJECTIVE: To evaluate a low-cost strategy for providing preventive health services to adolescents using computerized health assessments with individualized educational videos, trained health counselors, and nurses. DESIGN: Feasibility study, cost analysis, and comparative evaluation of health problems identified, guidance delivered, and patient satisfaction. SETTING: Eleven sessions at nontraditional sites including schools, universities, shopping malls, and after-hours clinics on Oahu, Hawaii. PARTICIPANTS AND INTERVENTION: Adolescents (N=258, mean age 17 years) completed confidential computerized health assessments, received individualized feedback, and viewed automatically selected educational videos on a laptop computer. The computer additionally printed a prioritized problems list for the graduate student-level health counselor to review with the adolescent. The counselor subsequently reviewed each encounter with a nurse-educator who performed further counseling and physical examinations when indicated. RESULTS: Visit length averaged 44 minutes. Subjects spent an average of 21 minutes completing the automated health assessment and viewing interactive multimedia and 15 minutes with the health counselor. One third of subjects required further evaluation and counseling by the nurse (average, 8 minutes). A team of 2 counselors and 1 nurse provided comprehensive screening, health counseling, and physical examinations to 1 patient every 10 minutes at a salary cost of $7.46 per visit. This model identified risk behaviors at levels consistent with local behavioral data, and addressed and documented them significantly more often than do physicians in traditional settings. Subjects (71%) preferred the computer-assisted visits to standard office visits, and 92% felt the amount of time spent was acceptable. CONCLUSIONS: Computer-assisted delivery of adolescent preventive services using nonphysician health counselors is a feasible, economical, and acceptable alternative to traditional clinical practice for screening young people for health-compromising behaviors and providing individualized health education and routine physical examinations. This model would likely increase adolescents' access to needed preventive services at a very modest cost.

Adolescent↗
PubMed2003

Increasing false recognition rates with confirmatory feedback: a phenomenological analysis.

During a simulated witness interrogation, participants were encouraged to confabulate an account consistent with false information concerning a videotaped event. The interviewer verbally affirmed some false responses. Previous research has shown that, a week later, participants often recognize confabulated events that were affirmed by the experimenter as being from the video. What is unclear is whether confirmatory feedback encouraged a change in the mental representation of the confabulated events to fit the original event or confirmation might have merely encouraged a change in beliefs about the event. To further understand the mechanisms that underlie the confirmatory feedback effect, participants were asked to judge the phenomenological experience associated with false recognition.

Adult↗
PubMedDate not supplied

Virtual reality simulation of arthroscopy of the knee.

The virtual reality arthroscopic knee simulator (VR-AKS) consists of a computer platform, a video display, and two force-feedback (haptic) interfaces known as "PHANToMs" that also monitor the position of the instruments in the user's hands. The forces that the user would normally apply to the lower limb during arthroscopy are directed through an instrumented surrogate leg. Proprietary software provides the mathematical representation of the physical world and replicates the visual, mechanical, and behavioral aspects of the knee. This includes moderating the haptic interface and simultaneously executing a collision-detection algorithm that prevents the instruments from moving through "solid" surfaces. Modeling software interacts with this algorithm to send the appropriate images to the video display, including knee pathology such as meniscal tears and chondral defects as well as normal anatomy. Task-oriented programs monitor specific performance such as executing a proper examination of the knee or shaving a torn meniscus.

Arthroscopy↗
PubMed1994

Reliability of the Barlow and Ortolani tests for neonatal hip instability.

OBJECTIVE: To investigate if those responsible for screening for neonatal hip instability are using acceptable manual hip stress tests as described by Ortolani and Barlow. METHOD: A video camera was used to record the technique of 35 personnel who were responsible for screening. They examined both a baby and a simulator. The study comprised five groups, classified by experience and practice: senior orthopaedic surgeons, senior paediatric staff, junior paediatric staff, nurses, community staff. RESULTS: The seven authors together with six independent expert observers viewed the video and marked the performance with the aid of a specially designed proforma. Although there was some variation between these expert observers, the results showed differences in the scores obtained by the different groups of examiners over all aspects of the test procedure. CONCLUSION: Video recording for critical analysis and feedback is a useful technique in this situation. Overall, the results suggest that testing for neonatal hip instability was inadequate. A variety of hip stress manoeuvres were being performed. The ability of each subject to perform satisfactory tests seemed to depend on their experience and education. More "hands on" training and experience of testing might provide the necessary competency for screening.

Community Health Nursing↗
PubMed2006

Influence of visual constraints in the trajectory formation of grasping movements.

The main objective of the present study is to show that the visual context can influence the trajectory formation of grasping movements. We asked participants to reach and grasp a cylinder disposed at three different positions: -20 degrees , 0 degrees and 20 degrees of eccentricity with respect to the midsagittal axis. Grasping movements were performed in a direct and in an indirect visual feedback condition (i.e., controlled through a vertical video display). Results revealed that for grasping movements directed toward objects located at -20 degrees and 0 degrees , path curvatures of the wrist, the thumb and the index finger were significantly straighter in the indirect visual feedback condition. However, no significant difference concerning hand path curvature was observed when the movement was directed toward the object located at 20 degrees . This suggests that grasping movements controlled through a remote visual feedback tend to be planned in extrinsic space and that the effect of the visual context on movement planning appears to be not isotropic over the workspace.

Adolescent↗
PubMed1996

Computer morphing of scanning electron micrographs: an adjunct to embryology teaching.

Traditional embryology courses demand considerable expenditure of time and effort from students to master the spatial awareness skills necessary to create three-dimensional mental images from two-dimensional serial sections. Then students must imagine a movie sequence of the changes which take place during normal development. Further steps are required to relate this information to the clinical situation. As more medical and dental schools move towards problem-based curricula, more efficient methods of improving understanding of embryology are needed. The development of many organs can be studied using scanning electron micrographs of embryos at different ages. These high quality images are more easily interpreted by our students than histological sections and the understanding achieved more readily applied to clinical problems. Still more beneficial would be the provision of moving images showing the actual changes happening. We decided to use computer morphing techniques to prepare movie sequences showing development of the face and plate. For each, four scanning electron micrographs of appropriately-sized sheep embryo heads were taken at the same magnification and orientation to use as start and end points of morphing sequences. After using retouching techniques to colour the separate processes, further sequences were prepared. The discipline of maintaining the same magnification throughout and the possibility of directly observing changes between stages revealed some surprising growth patterns. This technique is adaptable to any area of biological development where pre- and post-illustrations are available. Animations can be presented on computer or on video and incorporated into programs. Student feedback has been very favourable.

Animals↗
PubMed1996

Self-efficacy as a component of active coping: effects on cardiovascular reactivity.

Active coping remains a poorly understood construct in cardiovascular reactivity testing. We have shown that active coping comprises two independent effects: the enhanced control and the effort of exercising control. The present study tested the proposition that, with effort left unconstrained, increased self-efficacy will increase cardiovascular response. Forty women were assigned to low or high self-efficacy conditions; self-efficacy was manipulated using false feedback. Subjects then engaged in a video game shape-matching task, while blood pressure and heart rate were monitored. SBP and DBP changes were smaller in the low self-efficacy group, as predicted: 17.9 versus 25.2 mmHG for SBP (p < 0.05); and 8.7 versus 13.0 mmHG for DBP (p = 0.07). Heart rate was similar for the two conditions. We conclude that self-efficacy for a task may be an integral part of the active coping process, indirectly affecting the blood pressure response by acting on the effort involved in the coping response.

Adaptation, Psychological↗
PubMedDate not supplied

Dependence of timing of mitotic events on the rate of protein synthesis and DNA replication in sea urchin early cleavages.

To understand what processes affect the cell-cycle timing of mitotic events in early cleavage cycles of sea urchin embryos, a study was made on the effects of (a) reducing protein synthesis with emetine and (b) DNA replication with aphidicolin, on the timing of nuclear envelope breakdown, anaphase onset and cytokinesis. When protein synthesis was slightly inhibited by administration of emetine, the delay in the mitotic events increased, with an increase in the delay in accumulation of proteins up to the levels to which cells must synthesize the proteins to execute the cleavage. This indicated that protein synthesis affects the timing of mitotic events. The delay in cleavage cycles caused by a slight inhibition of DNA replication with aphidicolin was in proportion to the concentration of aphidicolin administered, suggesting that DNA replication also affects the timing of mitotic events. Furthermore, it was confirmed that accumulation of the proteins to the levels required for execution of the first cleavage precedes completion of DNA replication as a requirement for execution of the first cleavage. These results imply the existence of process(es) affected by protein synthesis that are included in a feedback control system which prevents the initiation of mitosis until after the completion of DNA replication; it is the characteristic of a cell-cycle control system that has been predicted theoretically.

Anaphase↗
PubMed2002

Training staff to conduct a paired-stimulus preference assessment.

Three staff members were trained to conduct stimulus preference assessments using a paired-stimulus format with 8 children with autism. Staff were trained to mastery level using brief instruction, a video model, and rehearsal with verbal feedback. Training took about 80 min per staff member. Results demonstrated that staff rapidly learned to correctly perform paired-stimulus preference assessments with children.

Adult↗
PubMed1996

Complex task performance in Cyberspace. Surgical procedures in a telepresence environment.

To assess the capabilities of our fully functional, prototype telepresence surgery system, experienced surgeons performed complete operative procedures on live, anesthetized pigs. Cholecystectomy, the prototypical procedure for evaluating the integration of surgical skills, was successfully performed in six animals. There were no aborted attempts or complications. Other procedures completed included gastrotomy and enterotomy closures, anastomosis of the small intestine, and nephrectomy. No specific training was required for using the telepresence surgery system, and the "feel" of the system was described as intuitive. Operative times were longer than required in conventional, open surgery, most likely the result of the four degrees of freedom available in the manipulators of the current-generation system. Force feedback and high-resolution, stereoscopic video input facilitated performance. Surgeons operating through a first-generation telepresence system can achieve technical results equivalent to those obtained in conventional surgery.

Animals↗
PubMed2000

Development of a virtual reality arthroscopic knee simulator.

The virtual reality arthroscopic knee simulator (VR-AKS) consists of a computer platform, a video display, and two force-feedback (haptic) interfaces which also monitor the position of the instruments in the user's hands. The forces that the user would normally apply to the lower limb during arthroscopy are directed through an instrumented surrogate leg. Proprietary software furnishes the mathematical representation of the physical world and replicates the visual, mechanical, and behavioral aspects of the knee while task-oriented programs monitor and record specific areas of user performance. A prototype has demonstrated the feasibility of the system and work on the first, fully functional simulator will begin soon.

Arthroscopy↗