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Characteristics on Cognitive Processing during Decision-making of Table Tennis Athletes

Author: XuZuo
Tutor: LiAnMin
School: Shanghai Institute of Physical Education
Course: Applied Psychology
Keywords: Policy decision Visual search Pattern Recognition N2 P3
CLC: G846
Type: Master's thesis
Year: 2010
Downloads: 168
Quote: 3
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Abstract

With the continuous improvement of the national level of competitive sports, as well as the rise of cognitive psychology, researchers more and more attention to the study of information processing characteristics Athletes scenarios. Which athletes complete the relevant information and action sports scene visual search, and the search for cognitive processing, and then make the decision making is the key link to complete the action. Therefore, the cognitive processing characteristics of the decision-making process of athletes for help athletes determine the ability to respond to competitive level, has certain theoretical significance and practical value. In this study, exercise level as independent variables, using expert - novice paradigms, integrated use of eye movements and event-related potentials recording technology, starting from the point of view of the decision-making characteristics and the decision-making process, experts advantages of table tennis players in the sports context , as well as decision-making behavior, cognitive processing characteristics of visual perception and decision-making. The results found that: (1) Table Tennis athlete decision-making processing timeliness advantages, performance higher judgment accuracy and faster response; the students decisions reaction (2) close to random probability distribution, and tend to choose the middle and close to their own position, and table tennis players of the decision-making response is based on the cognitive processing of the results of the motion information; athletes (3) decision choice away from the correct location, the more, the longer reaction time, choice of frequency lower; (4) Compared with college students, table tennis athletes eye movements have fixation point as early as the first and last, look at the number of small, short fixation time, saccade distance is small, looking at the high-frequency characteristics, and visual search mode ring fixation point is relatively concentrated in the racket, serve athletes handed arm and torso, while college students watching point distribution of scattered erratic; fixation point distribution around the N2 activation (350-450ms), athletes proper reaction and serve athletes the swing trajectory coincides serve; athletes and college students (5) stimulus presentation about 400ms after activation in frontal and prefrontal cortex a significant negative to the wave N2 in the occipital and parietal regions, only athletes with a small negative the N2 wave; athletes N2 peak latency in frontal earlier than college students, college students in the occipital region late; athletes N2 activated frontal activation strength and the range of greater than college students N2 late Central - Top activation than college students; (6) about 500ms after stimulus, athletes and college students to activate a significant positive wave P3, athletes P3 peak amplitude in the right frontal and temporal regions, greater than college students, peak latency - the top area in the right temporal later than the college students; athletes P3 pre-frontal region activated earlier than college students, P3 late, central - parietal area activated earlier than college students, active range greater than college students; (7) the athletes error response in the central and posterior scalp activate the N2 peak volatility is greater than the correct response; N2 peak latency in the right side of the forehead late in the error response; athletes proper reaction P3 peak latency slightly earlier in the wrong reaction; wrong reaction, athletes N2, P3 active scalp excited strength and The range is greater than the correct response, the most significant differences in frontal, central and parietal occipital region. The study concluded that: (1) the athlete's decision-making is based on the results of the cognitive processing of motion information and college students will be the impact of response selection preferences; (2) the movement of athletes perceptual process is a process of pattern recognition feature matching plays an important role in this process; (3) when the the athletes perceived characteristics minds stored mode feature greater the difference, you need to allocate more central resources in the process of visual search to extract more key feature to complete the identification, so that the reaction to extend; (4) on the two factors of speed and accuracy, athletes prefer rapid reaction; (5) athletes in the premise of limited central resource capacity, in addition to data-driven processing, pattern recognition movement context concept-driven processing, the more central allocation of resources in the search and extract specific information, which also makes the athlete's visual search pattern is more cost-effective; ( 6) the athlete's decision-making process can be summarized as follows: extract specific characteristics → activation mode → Search key feature → make a decision → motion → output pattern recognition. If the search feature is not enough to complete the pattern recognition, the central processing need to return to the search and extraction of key features, until the completion of pattern recognition, and then make decisions to complete the movement output.

Characteristics on Cognitive Processing during Decision-making of Table Tennis Athletes

Abstract

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