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Results for “MOVING PICTURES”

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At least 109 records · Page 6Linked to original sources
PubMed2006

Development of e-learning multimedia contents for PBL.

The purpose of this study was to develop a PBL package for maternal and newborn care and apply e-learning multimedia contents for PBL. During the first semester of 2005, 64 Nursing students of a college were subjected to the e-learning multimedia contents for PBL. This course was blended so that part of the class sessions were held in a face to face setting and the other classes were held online. Learners' reactions and their instructional performance were measured.E-learning multimedia contents, composed of a learning contents system, PBL systems and an administrator/professor system, were developed. Ratings of their reactions as learners and of instructional performance averaged 3.3 points and 3.9 points (on a scale of 5) respectively. Some benefits of this program as reported by the learners are: the moving pictures similar to clinical situations, distinctive experience, ease of understanding, time saving, repetitive learning, etc. The nursing students reported this program was a positive experience and that it encouraged self-directed learning.

Education, Distance↗
PubMed1991

[Improvements in 3-D ultrasonic imaging].

The problem of gaining a coordinated sequence of section cuts by ultrasound is solved by rotating the plane section around a vertical and a horizontal axle. There are two possibilities in presenting the 3D image of the examined organ: ring structure image or transparent image. Precondition in the ring structure image is time consuming and defective since it has to be done by hand using a cursor. These pitfalls can be avoided when using a method without contouring by showing the 3D image transparently. Each section cut has to be calculated transparently. Both methods are presented in this paper and compared as to their applicability in medicine. The problem of the transparent 3D presentation lies in the fact that it cannot be well presented on printed paper, as is done her. The moving picture on the computer screen gives an optimal 3D image. This new method seem to be useful in tumor diagnostic and diagnostic of malformations in early pregnancies.

Computer Graphics↗
PubMed1991

[Symptomatology of the involuntary movement].

Actual phenomena of various types of involuntary movements listed below were demonstrated by moving pictures, which were followed by comments on symptomatology, in particular the fundamental characteristics of an individual involuntary movement. These characteristics are the essence of each involuntary movement, and it is necessary to recognize both its phenomenon itself and its accumulated knowledge in order to realize and interpret the involuntary movement. The following involuntary movements are treated: (1) typical tremor-at-rest in paralysis agitans, (2) atypical parkinsonian tremor, (3) essential tremor, (4) chorea, (5) ballism, (6) athetosis, (7) choreoathetosis, (8) dystonia, (9) spontaneous myoclonus at rest, (10) intention or action myoclonus, (11) intention tremor and (12) hyperkinesis.

Humans↗
PubMed1997

Artificial vision workbench.

Machine vision is an important component of medical systems engineering. Inexpensive miniature solid state cameras are now available. This paper describes how these devices can be used as artificial retinas, to take snapshots and moving pictures in monochrome or color. Used in pairs, they produce a stereoscopic field of vision and enable depth perception. Macular and peripheral vision can be simulated electronically. This paper also presents the author's design of an artificial orbit for this synthetic eye. The orbit supports the eye, protects it, and provides attachment points for the ocular motion control system. Convergence and image fusion can be produced, and saccades simulated, along with the other ocular motions. The use of lenses, filters, irises and focusing mechanisms are also discussed. Typical camera-computer interfaces are described, including the use of "frame grabbers" and analog-to-digital image conversion. Software programs for eye positioning, image manipulation, feature extraction and object recognition are discussed, including the application of artificial neural networks.

Artificial Organs↗
PubMed2006

Real-time comprehension of wh- movement in aphasia: evidence from eyetracking while listening.

Sentences with non-canonical wh- movement are often difficult for individuals with agrammatic Broca's aphasia to understand (, inter alia). However, the explanation of this difficulty remains controversial, and little is known about how individuals with aphasia try to understand such sentences in real time. This study uses an eyetracking while listening paradigm to examine agrammatic aphasic individuals' on-line comprehension of movement sentences. Participants' eye-movements were monitored while they listened to brief stories and looked at visual displays depicting elements mentioned in the stories. The stories were followed by comprehension probes involving wh- movement. In line with previous results for young normal listeners [Sussman, R. S., & Sedivy, J. C. (2003). The time-course of processing syntactic dependencies: evidence from eye movements. Language and Cognitive Processes, 18, 143-161], the study finds that both older unimpaired control participants (n=8) and aphasic individuals (n=12) showed visual evidence of successful automatic comprehension of wh- questions (like "Who did the boy kiss that day at school?"). Specifically, both groups fixated on a picture corresponding to the moved element ("who," the person kissed in the story) at the position of the verb. Interestingly, aphasic participants showed qualitatively different fixation patterns for trials eliciting correct and incorrect responses. Aphasic individuals looked first to the moved-element picture and then to a competitor following the verb in the incorrect trials. However, they only showed looks to the moved-element picture for the correct trials, parallel to control participants. Furthermore, aphasic individuals' fixations during movement sentences were just as fast as control participants' fixations. These results are unexpected under slowed-processing accounts of aphasic comprehension deficits, in which the source of failed comprehension should be delayed application of the same processing routines used in successful comprehension. This pattern is also unexpected if aphasic individuals are using qualitatively different strategies than normals to comprehend such sentences, as under impaired-representation accounts of agrammatism. Instead, it suggests that agrammatic aphasic individuals may process wh- questions similarly to unimpaired individuals, but that this process often fails to facilitate off-line comprehension of sentences with wh- movement.

Adult↗
PubMed1976

[The effect of increased performance of modern x-ray tubes on improvements in picture quality, particularly of moving organs (author's transl)].

The deleterious effect of organ movement on radiographic quality is examined. In connection with this, the performance of various focal spots is discussed, particularly of a modern high speed tube with focal spots of 1.2, 1.5 and 1.8, with a resolution in the region of 3 to 6 lp/mm. A detailed discussion of the results is given with examples derived from various techniques used for the stomach and lungs. The results indicate that there is considerable improvement to be derived from high performance tubes with small focal spots. A further significant advance is also due to the high resolution image intensifiers. These have resulted in a marked increase in the use of 70 and 100 mm. film.

Humans↗
PubMed1978

Representation of complex visual stimuli in the brain.

A method was developed to investigate transfer properties of neurons in the visual system using pictures of complex visual stimuli. The picture is moved over the receptive field of a neuron so that it can scan it along programmed lines. The activity of the neuron during the scanning procedure is presented in a two-dimensional dot display on scale with the original picture. By superposition of the stimulus and the transfer pattern, one can find out to which detail of a stimulus the neuron responds. Neurons in the first intracerebral relay of the visual system, the lateral geniculate body, reduce a complex stimulus, such as a photograph of a natural environment, to its contours. Cortical cells only respond to contours either of a limited or of a wider range of orientations (simple and complex cells, respectively). But the course of contours is only described by a continuous representation of these contours in the cortical map of the visual field. This is done by the simple cells, which have small receptive fields and thus a higher resolving power, whereas complex cells with their large receptive fields monitor the approximate location of a moving stimulus. The function of these two classes of neurons is discussed in terms of visual behavior, i.e., for fixation, hold, and binocular vergence movements (simple cells), and for detection of moving objects and motor command signals towards these objects (complex cells). These functions are an important condition for foveal vision which is the basis of perception in primates. An important function of orientation sensitivity of simple cells may be the binocular alignment of contours in binocular fusion and stereoscopic vision.

Animals↗
PubMed1993

Visual modelling.

The first purpose of this paper is to present a neural net model of the visual cortex of higher vertebrates based on the electrophysiological properties of the ganglion cells. This model takes Hebb's law [1] as the physiological learning rule for synaptic modification. The model consists of 85 x 85 neurons forming a layer similar to the cortex. The neurones are massively connected via weights that are typically adapted. We simulate several input patterns and show that the model reproduces the pattern recognition, contours pictures and moving perception.

Algorithms↗