• 제목/요약/키워드: Visual Cognitive Characteristics

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주변성 난독증의 특성과 대뇌활성화 양상 - 단일사례연구 - (Cognitive neuropsychological assesment in pure alexic patient with letter-by-letter reading using fMRl - Single case study -)

  • 손효정;편성범;김충명;남기춘
    • 대한음성학회:학술대회논문집
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    • 대한음성학회 2005년도 추계 학술대회 발표논문집
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    • pp.137-140
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    • 2005
  • In this study we investigated the cognitive neuropsychological characteristics and the underlying mechanism in a letter-by-letter reading dyslexic patient after cerebral infarct of left posterior cerebral artery using fMRl, The results of cognitive neuropsychological assesment are visual perception was appropriate, and semantic categorization, picture naming and picture-word matching tasks were above83% correct, respectively. However, she was very poor in lexical decision task. The selective reading impairment is thought to result from the disruption of the left occipitotemporal region included fusiform gyrus. In fMRl results, the activation level increase din the right occipitotemporal region included fusiform gyrus compared with normal group in compensation for left impairment and more increased in pseudo word reading task than word reading on account of familiarity.

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조형요소의 감성적 인지특성에 관한 연구 - 색상과 형태를 중심으로 - (A Study on the Emotional Cognitive Characteristics of Formative Elements - Focusing on Color and Form -)

  • 황미경;권만우;김치용
    • 한국멀티미디어학회논문지
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    • 제24권3호
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    • pp.460-467
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    • 2021
  • Among the formative elements, color and form are the most critical elements that can capture a person's perspective. Companies are concentrating on developing visual perception-oriented products by accommodating the diverse needs of consumers, where the emotional factor plays as an important design consideration. Accordingly, the visual perception reaction of consumers was analyzed through a questionnaire focusing on color and form. The result finds that, when Ernst Gombrich (1909-2001) perceives objects in questionnaires related to personal preferences for color and form, humans do not rely solely on the eyes, but describes with the knowledge diagram through that knowledge. In doing so, the knowledge that we already know plays a part to describe the object. In addition, colors and forms are recognized by combining the social and cultural information experiences of the perceiver with the learned knowledge. In the future studies that define the interrelationships of the formative elements should be continued through the analysis of more complex and clear visual perception characteristics of the formative elements.

뇌질환 환자에서 전산화 인지치료의 임상적 유용성 : 체계적 고찰 및 메타분석 (Clinical Benefit of Computerized Cognitive Therapy in Patients with Brain Disease : A Systematic Review and Meta-Analysis)

  • 송승일;박소원
    • 대한통합의학회지
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    • 제8권4호
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    • pp.277-289
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    • 2020
  • Purpose : This study aims to confirm the clinical usefulness of computerized cognitive therapy program for patients with brain diseases in Korea and to present basic data that can confirm the effectiveness of computerized cognitive therapy program to experts related to rehabilitation in the future. Methods : A systematic review and meta-analysis research method was used to confirm the clinical effectiveness of computerized cognitive therapy applied to patients with brain diseases in Korea. Based on the national institute of health and medical colleges association (NECA) systematic literature manual and preferred reporting items for systematic reviews and meta-analysis (PRISMA) guidelines for conducting research through systematic review and meta-analysis methods. Systematic review was PICOST-SD was used to research and select papers. For meta-analysis, the data was input and analyzed separately by literature result using the revman manager 5.3 program and the results were presented visually through tables and forest, funnel plot figure. Results : As a result of comprehensive analysis of the contents of the finally selected literature, it as found that studies on stroke and dementia were mainly conducted. In addition, through the evaluation of the quality of the literature, most of the existing computerized cognitive therapy studies were identified as high-quality studies, but the results were insufficient for randomization and blinding. And through meta-analysis, the clinical effectiveness of computerized cognitive therapy on cognitive function, activities of daily living, and visual perception function of patients with brain disease was found. Conclusion : The research literature that applied computerized cognitive therapy to brain disease subjects was comprehensively analyzed and identified. It is thought that this could be used as basic data on the characteristics of cognitive therapy that should be applied to patients with brain diseases in the future and the usefulness of computerized cognitive therapy program in actual clinical practice.

변화탐지와 회상 과제에 기초한 시각작업기억의 통합적 객체 표상 검증 (Integrated Object Representations in Visual Working Memory Examined by Change Detection and Recall Task Performance)

  • 이인애;현주석
    • 인지과학
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    • 제35권1호
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    • pp.1-21
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    • 2024
  • 본 연구는 두 가지 이론적 모델인 통합된 객체 모형과 특장 병렬-독립 저장 모형을 검증함으로써 시각작업기억 표상의 특성을 조사하였다. 실험 I에서 참가자들은 색상 사각형, 방위 막대 또는 두 가지 모두로 구성된 배열을 기억한 뒤 이를 토대로 변화탐지과제를 수행했다. 단일 특징 조건에서 기억배열은 하나의 특징(방위 또는 색상)으로만 구성된 반면, 두 가지 특징 조건은 둘 모두를 포함했다. 두 조건간 변화탐지 수행의 차이는 없었으며 이는 병렬-독립 저장 모형보다는 통합된 객체 모형을 지지한다. 실험 II에서는 이등변삼각형의 방위, 색상 사각형 또는 두 특징 모두로 구성된 기억배열을 대상으로 회상과제가 실시되었으며, 단일 특징과 두 가지 특징 조건 간 회상 수행이 비교되었다. 두 조건 간 회상 정확도에는 차이가 없었으나 표상 선명도와 추측반응에 대한 분석 결과는 강한 객체 모형보다는 약한 객체 모형을 시사했다. 본 연구의 결과는 시각작업기억의 표상 특성을 둘러싼 현시점의 논쟁에 있어서 병렬-독립 저장 모형이 아닌 통합된 객체 모형의 우세를 지지한다.

정상성인의 시각 및 촉각 통합 작용 시 뇌신경세포의 전기생리적활동의 시간 및 공간적 특성: 예비실험 (Temporal and Spatial Characteristics of Visual and Somatosensory Integration in Normal Adult Brain)

  • 주유미;김지현
    • 대한감각통합치료학회지
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    • 제8권1호
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    • pp.41-49
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    • 2010
  • 목적 : 다감각 통합은 인지과제나 운동실행을 위해 다양한 감각정보를 사용하는 데 있어서 필수적인 처리과정이다. 특히 시각 및 체감각의 통합은 운동 행동의 주요한 요소이다. 본 연구는 감각통합 과정의 시간적 경로와 뇌의 담당 위치를 파악하기 위해 신경생리학적 연구방법을 사용하여 시각과 체감각의 통합과정과 관련된 뇌의 시간적 및 공간적 특성을 조사하였다. 연구 방법 : 실험실 상황에서 시각과 촉각 자극을 독립적으로 또는 동시에 제시하고 유발전위검사(ERP: Event-Related Potentials)를 통해 통합작용 시 뇌에서 일어나는 신경세포들의 전기생리적활동을 측정하였다. 이때 시각 과 촉각을 각각 제시하여 얻은 유발전위신호들의 선형합과 두 개의 자극을 동시에 제공하였을 시 발생되는 유발전 위신호를 측정하여 비교하였다. 결과 : 시각과 촉각을 독립적으로 각각 제시하여 얻은 유발전위신호(SUM)의 합과 두 개의 자극을 동시에 제공하여 얻은 유발전위신호(SIM)는 같지 않았다. 특히나 자극의 반대측인 오른쪽 일차체감각영역(C4)에서 SIM은 SUM 보다 특정시간대에 통계적으로 유의미한 차이를 보였으며, Bilateral parietal areas(P3, Pz, P4) 뿐만 아니라 일차 시각영역(O1,O2)에서도 두 조건간 추가적인 통합관련 신경활동전기신호에 의한 통계적으로 유의미한 차이를 나타내고 있다. 결론 : 뇌 속에서 2개 이상의 감각이 통합될 경우 이와 관련된 추가적인 신경세포활동이 일어나고 있으며, 이는 다 감각을 동시에 제공할 경우 뇌의 활동을 더욱 활발하게 촉진시키고 있음을 시사한다.

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스페이스 브랜딩을 적용한 한식뷔페 표현특성 - 서울시에 위치한 한식뷔페를 중심으로 - (Expression Characteristics of Korean Buffet applied Space Branding - Focusing on the Korean Buffet in Seoul City -)

  • 정영현
    • 한국실내디자인학회논문집
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    • 제26권3호
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    • pp.91-100
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    • 2017
  • The rapid growth of Korean-style buffet in recent years has increased the size of corporate investment. Under this circumstance, businesses make various marketing efforts while highlighting the features and advantages of their brands. Against this backdrop, this study aims to understand which space branding has been applied to the Korean-style buffet through case studies and to propose a method of application of space branding to increase sales in an effective manner in the future. First, the research is theoretical examination and case studies with focus on the characteristics of expressions of Korean-style buffet space branding. Basically, upon completion of examining the concept and the characteristics of expressions of the Korean-style buffet and analyzing the concept of space branding, the components of space branding have been reconstructed based on preceding studies on space branding and then have been applied to each brand space. Also, the hands-on experience of the characteristics of expression of the Korean-style buffet with space branding incorporated in it and prepared a checklist via visual inspections. And then, the field surveys based on these examinations and took approach of drawing a conclusion based on the results analysis conducted by using the SPSS statistical program. Through preceding studies, the three components of space branding, that is, sensory element, emotional element, and cognitive element have been reconstructed before proceeding with this study, which has obtained five major findings as a conclusion. First, the sensory element should be given elements differentiated enough to attract consumers' attention along with a sustainable effort to have brand image imprinted in their mind. Second, in terms of emotional element, the study has found that the brand experience oriented toward interest and participation results in higher utility frequency. Third, the study has found that the cognitive element should seek consistency in communicating with consumers with focus on face-to-face contact on the display in space. Fourth, it has been found that arranging independent spaces is necessary to attract consumers' participation. Finally, the study has identified in which location area of buffet the sensory, emotional, and cognitive elements have placed a significant weight.

도시 배후 산 지형 스카이라인 경관의 조망 특성과 경관 대표성 평가 - 시점 위치에 따른 무등산 조망경관 분석을 중심으로 - (Research on the Visual Characteristics of a Representative View of the Skyline; - Referring to Landscape Assessment of Mt. Mudeung from Various Viewpoints -)

  • 조동범
    • 한국조경학회지
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    • 제35권6호
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    • pp.84-96
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    • 2008
  • This research investigated the landscape characteristics of the skyline and the cognitive characteristics of Mt. Mudeung (1,186m) from various viewpoints. Mt. Mudeung, the representative landscape of Gwangju City, has been recognized as a natural landmark and theme of paintings. By analyzing the perspective from 32 points with a digital terrain model, some landscape indices of the skyline were derived and the relationships are discussed. Assessment of the semantic differential scale with 21 adjective variables and representativeness to 15 landscape photographs of the mountain were accomplished. 1. Through regression analysis of the skyline indices, significant relationships were found between them the angle from the visual axis and number of skyline jumps, the vertical angle fluctuation and number of jumps per degree, the visual depth fluctuation and vertical angle fluctuation of skyline, and between the vertical angle mean and number of jumps per degree. Meaningful relations were found between the number of jumps of skyline to number of jumps per degree and the angle from visual axis to visual distance. However, in the representative assessment no difference was found on the angle from visual axis of viewpoints. On the other hand, it seemed to relate representativeness with visual clarity based on visual distance. 2. We found 4 factors "familiarity", "fluctuation of skylines", "openness", and "feeling of texture" in the results of factor analysis of semantic differential assessment. When considering the results of assessment for representativeness, adjective words for familiarity and openness seemed to have a close assessment. Specifically, the research showed that the landscape representation was highly assessed in a view which could be seen from the higher parts to the lower part of hills. This result indicates that the management of viewpoints which could get a scene from intermediate to distant, and locating a high elevation is important. 3. In the picturesque expression of Mt. Mudeung, various impressions from the different points, a skyline based on the top of Mt. Mudeung and a mono structure by overlapping hills were common characteristics. These common characteristics were also partially found through the analysis of topographical landscape indices and landscape images. Therefore, the viewpoints for the representative landscape management should be selected in natural or open spaces.

모바일 작업을 위한 수정된 GOMS-model에 대한 연구 (Modified GOMS-Model for Mobile Computing)

  • 이석재;명노해
    • 산업경영시스템학회지
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    • 제32권2호
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    • pp.85-93
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    • 2009
  • GOMS model is a cognitive modeling method of human performance based on Goal, Operators, Methods, Selection rules. GOMS model was originally designed for desktop environment so that it is difficult for GOMS model to be implemented into the mobile environment. In addition, GOMS model would be inaccurate because the original GOMS model was based on serial processing, excluding one of most important human information processing characteristics, parallel processing. Therefore this study was designed to propose a modified GOMS model including mobile computing and parallel processing. In order to encompass mobile environment, an operator of 'look for' was divided into 'visual move to' and 'recognize' whereas 'point to' and 'click' were combined into 'tab.' The results showed that newly introduced operators were necessary to estimate more accurate mobile computing behaviors. In conclusion, modified-GOMS model could predict human performance more accurately than the original GOMS model in the mobile computing environment.

Improving In-Vehicle Display and Control Design for Older Drivers

  • Ryu, Jae-Heok;Lee, Seong-Il
    • Industrial Engineering and Management Systems
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    • 제10권4호
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    • pp.288-291
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    • 2011
  • Recommendations for older driver-friendly automobile interior design have been determined by taking into account older people's physical and cognitive characteristics. Twenty three older people (aged from 54 to 78) and five younger people (from 20 to 29) performed several tasks in actual driving conditions, in which their reaction times and performance errors were recorded. Some design factors were found to be related to older drivers' visibility and controllability. Several design recommendations were proposed in terms of cluster color and font, display location, and HVAC control type. Proposed recommendations are expected to satisfy a wider range of older drivers as these will facilitate automobile interior designs which are fitter to older drivers' visual, cognitive, and manual capabilities.

A Study on the Effect of Pre-cue in Simple Reactions on Control-on-Display Interfaces

  • Lim, Ji-Hyoun;Choi, Jun-Young;Kim, Young-Su
    • 대한인간공학회지
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    • 제30권4호
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    • pp.563-569
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    • 2011
  • Objective: This study focuses on the effects of pre-cues informing the location of upcoming visual stimulus on finger movement response in the context of control-on-display interfaces. Background: Previous research on pre-cues focus on attention allocation and motion studies were limited to indirect control conditions. The design of this study aimed to collect data on the exact landing point for finger-tap responses to a given visual stimulus. Method: Controlled visual stimuli and tasks were presented on a UI evaluation system built using mobile web standards; response accuracy and response time were measured and collected as appropriate. Among the 16 recruited participants, 11 completed the experiment. Results: Providing pre-cue on the location of stimulus affected response time and response accuracy. The response bias, which is a distance from the center of stimulus to the finger-tap location, was larger when the pre-cue was given during a one-handed operation. Conclusion: Given a pre-cue, response time decreases, but with accuracy penalized. Application: In designing touch-screen UI's - more strictly, visual components also acting as controllers - designers would do well to balance human perceptual and cognitive characteristics strategically.