What Is Perimetry?
The field of vision refers to the range of external space that can be felt when the eye (monocular or binocular) fixates directly in front. The field of view is divided into static field of view and dynamic field of view. Dynamic field of vision mainly refers to the range of moving targets that can be seen. Dynamic visual field measurement is a method of using a stimulus intensity visual target to move from the periphery of a visual field to the visible area to explore the junction of the invisible area and the visible area.
- Chinese name
- Dynamic field measurement
- Applied discipline
- psychology
- Application range
- Experimental psychology
- The field of vision refers to the range of external space that can be felt when the eye (monocular or binocular) fixates directly in front. The field of view is divided into static field of view and dynamic field of view. Dynamic field of vision mainly refers to the range of moving targets that can be seen. Dynamic visual field measurement is a method of using a stimulus intensity visual target to move from the periphery of a visual field to the visible area to explore the junction of the invisible area and the visible area.
Dynamic field measurement background
- With the development of research methods and measuring instruments, the field of artificial intelligence is no longer satisfied with the one-way black box research of machine simulation of human brain function. More researchers expect to reveal the neural mechanism of brain function through direct exploration of human brain. As a result, a new interdisciplinary disciplinebrain informaticshas taken the human brain as a human information processing system (HIPS) to understand its principles and mechanisms, and looks forward to solving human brain signals and brain signals in brain-computer interfaces. The docking problem between advanced cognitive activities, to establish a cognitive model that simultaneously simulates advanced cognitive processes and human brain signal patterns. With the help of computers, great progress has been made in the research of brain informatics, especially the development of brain functional imaging technology. People can already dynamically study the relationship between the structure and function of the brain in real time. The mental activity of the human brain can also be experimentally studied. Conduct research, which in turn has effectively promoted the development of brain informatics. Research on the brain processing mechanism of visual information is one of the hot topics. In order to understand how the human brain produces advanced visual perception, we must first understand the primary visual information processing mechanism of the human brain center. In addition to physiological and physical research methods, ERP brainwave measurement and functional magnetic resonance fMRI are the main methods of brain function research in the field of cognitive neuroscience in recent years. The main method is to collect brain waves or blood activities during the behavioral experiment Situation data, data processing, and intuitive functional moving images. In these studies, appropriate and cleverly designed behavioral experiments and correct data processing are important basic conditions for ensuring the results of functional experiments.
Dynamic field measurement
- The field of vision refers to the range of external space that can be felt when the eye (monocular or binocular) fixates directly in front. The field of view is divided into static field of view and dynamic field of view. Dynamic field of vision mainly refers to the range of moving targets that can be seen. Dynamic visual field measurement is a method of using a stimulus intensity visual target to move from the periphery of a visual field to the visible area to explore the junction of the invisible area and the visible area.
- Dynamic visual field is a very important visual function, which is of great significance to people's daily life and an important aspect of human brain function research. In the field of cognitive neuroscience, research on dynamic visual fields has reached some conclusions. For example, when visual target conditions affect the size of the visual target and the brightness of the visual target is large, the dynamic visual field area becomes broad; the visual target moves fast. , The dynamic visual field area becomes narrower; there is no difference in the dynamic visual field area of the left and right eyes, and so on. In these studies, the influence of the simple response time of the test subjects on the measurement results was not considered. If the differences in the simple response time of the subjects are considered, and for the problems in the traditional dynamic visual field measurement, the influence of the simple response time of the subject on the dynamic visual field measurement can be subtracted to obtain a more accurate definition of the dynamic visual field. For this experiment, the simple response time of 7 normal subjects was measured first, and then the dynamic field of view of the subjects under different conditions of different sizes, different brightnesses and different color visual targets were measured. Comparing the measurement results of the simple response time, the results have significant differences, which shows that the new definition of dynamic field of vision is more reasonable than the traditional definition of dynamic field of vision: only the simple response time difference of the test subject is considered, and the dynamic field of vision is correctly defined. In order to accurately evaluate the size, brightness, and color dependence of the dynamic field of vision on the visual target, it is possible to draw closer to the actual evaluation results of the visual characteristics of the dynamic field of vision of the subject. [1]