• Title, Summary, Keyword: Visual Memory

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Effects of Emotion on Color Vividness of Visual Memory (감성이 시각적 이미지의 색감기억에 미치는 영향)

  • Jang, Phil-Sik
    • Journal of the Ergonomics Society of Korea
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    • v.30 no.1
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    • pp.221-227
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    • 2011
  • Objective: The aim of this study is to investigate the quantitative effects of various emotions and retention periods on the color vividness of visual memory. Background: Although numerous studies have focused on the effects of emotions on memory such as visual detail and vividness of emotional events compared to neutral events, the relationship between emotion and visual memory is ambiguous yet. Furthermore, there were few studies on the effect of emotion on vividness of visual memory. Method: A total of 68 subjects were participated in serial experiments proceed on online and the experiments had two phases: recognition phase and reproduction phase. The 15 photographs were used as visual stimuli and all experiments were conducted over the internet(experiment website) and the results were collected on the web database. Results: The retention period, sleep-arousal emotion and subjective saturation of visual stimuli had a significant effect on the color vividness of visual memory. Conclusion: The results suggested that the color of visual stimulus might be more vividly remembered when it is arousing, the subjective saturation is higher and the retention period is longer. Application: The findings of this study may help clarify the relationship between human emotions and visual memory.

Effects of a Memory and Visual-Motor Integration Program for Older Adults Based on Self-Efficacy Theory

  • Kim, Eun-Hwi;Suh, Soon-Rim
    • Journal of Korean Academy of Nursing
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    • v.47 no.3
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    • pp.431-444
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    • 2017
  • Purpose: This study was conducted to verify the effects of a memory and visual-motor integration program for older adults based on self-efficacy theory. Methods: A non-equivalent control group pretest-posttest design was implemented in this quasi-experimental study. The participants were 62 older adults from senior centers and older adult welfare facilities in D and G city (Experimental group=30, Control group=32). The experimental group took part in a 12-session memory and visual-motor integration program over 6 weeks. Data regarding memory self-efficacy, memory, visual-motor integration, and depression were collected from July to October of 2014 and analyzed with independent t-test and Mann-Whitney U test using PASW Statistics (SPSS) 18.0 to determine the effects of the interventions. Results: Memory self-efficacy (t=2.20, p=.031), memory (Z=-2.92, p=.004), and visual-motor integration (Z=-2.49, p=.013) increased significantly in the experimental group as compared to the control group. However, depression (Z=-0.90, p=.367) did not decrease significantly. Conclusion: This program is effective for increasing memory, visual-motor integration, and memory self-efficacy in older adults. Therefore, it can be used to improve cognition and prevent dementia in older adults.

Validating Iconic Memory According to the Phenomenological and Ecological Criticisms (현상학적, 생태학적 비판에 기초한 영상기억의 타당성)

  • Hyun, Joo-Seok
    • Korean Journal of Cognitive Science
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    • v.30 no.4
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    • pp.239-268
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    • 2019
  • Since last several decades, iconic memory has been accepted theoretically valid for its role of the first storage mechanism in visual memory process. However, there have been relatively less interests in iconic memory among researchers than their interests in visual short- and long-term memory. Such little interests seem to arise from a lack of detailed understandings of theories and methodologies about iconic memory and visual persistence. This study aimed to achieve the understandings by reviewing theories and empirical studies of iconic memory and visual persistence. The study further discussed future direction of iconic memory research according to the essential aspects of phenomenological and ecological criticisms against the validity of iconic memory.

Memory in visual search: Evidence from search efficiency (시각 탐색에서의 기억: 탐색 효율성에 근거한 증거)

  • Baek Jongsoo;Kim Min-Shik
    • Korean Journal of Cognitive Science
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    • v.16 no.1
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    • pp.1-15
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    • 2005
  • Since human visual system has limited capacity for visual information processing, it should select goal-relevant information for further processing. There have been several studies that emphasized the possible involvement of memory in spatial shift of selective attention (Chun & Jiang, 1998, 1999; Klein, 1988; Klein & MacInnes, 1999). However, other studies suggested the inferiority of human visual memory in change detection(Rensink, O'Regan, & Clark, 1997; Simons & Levin, 1997) and in visual search(Hotowitz & Wolfe, 1998). The present study examined the involvement of memory in visual search; whether memory for the previously searched items guides selective attentional shift or not. We investigated how search works by comparing visual search performances in three different conditions; full exposure condition, partial exposure condition, and partial-to-full exposure condition. Revisiting searched items was allowed only in full exposure condition and not in either partial or partial-to-full exposure condition. The results showed that the efficiencies of attentional shift were nearly identical for all conditions. This finding implies that even in full exposure condition the participants scarcely re-examined the previously searched items. The results suggest that instant memory can be formed and used in visual search process. These results disagree with the earlier studies claiming thar visual search has no memory. We discussed the problems of the previous research paradigms and suggested some alternative accounts.

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Effect of Visual Scanning Program on the Visual Memory of Stroke Patients: Single Subject Research Design (시각탐색(visual scanning) 프로그램이 뇌졸중 환자의 시각기억에 미치는 영향: 단일 사례연구)

  • Hwang, Sun-Jung;Kim, Jung-Mi
    • The Journal of Korean society of community based occupational therapy
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    • v.3 no.1
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    • pp.67-75
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    • 2013
  • Objective : The purpose of study was to visual scanning program on the effect of visual memory in stroke patients. Method : A single subject experimental research with ABA design was employed in this study. The experiment composed of 15 sessions in total: 5 sessions for baseline, 7 session for visual scanning program, and 3 sessions for the second baseline. Each session for intervention took 30 minutes daily. MVPT, CNT(visual span test, visual learning test) were used for assessment visual perception, visual memory. Result : After visual scanning program, changing faster processing time MVPT 5.5 seconds to 4.5 seconds. Also all itme raw score changes of CNT visual span test, visual learning test. Conclusion : Visual scanning program in stroke patients give a positive impact on the visual memory. To improve stroke patients' perception visual scanning program utilizing visual perception research as well as training programs for a variety of looks forward to being developed.

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Eye Movement Program Consisting of Saccadic Eye Movement and Pursuit Eye Movement Improved Visual Memory in Institutionalized Elderly Person: Randomized controlled pilot study

  • Park, Yongnam;Bae, Youngsook
    • Journal of International Academy of Physical Therapy Research
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    • v.10 no.2
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    • pp.1768-1773
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    • 2019
  • Background: Aging reduces cognitive abilities, including visual memory (VM) and visual discrimination (VD). Since common cortical networks subserve eye movement and attention, voluntary eye movement may improve visual attention. Visual selective attention was major role for memory, and visual memory and visual attention are intimately related. Objective: To identify the improvement in VD and VM, after implementing the eye movement program consisting of saccadic eye movement (SEM) and pursuit eye movement (PEM) in the institutionalized healthy elderly. Design: Randomized controlled trial. Methods: The study involved a sample of 36 participants, and the mean age was 79.03 years (range 76~84 years). They were randomly allocated to the experimental group (n=16) and control group (n=20). Participants in the experimental group performed SEM 5 times per week for 4 weeks: twice daily at the same time in the morning and afternoon. The program was carried out for 3 minutes, and it consisted of SEM and PEM. The target's moving frequency was set at 0.5 Hz. VM and VD at the baseline and post-intervention were measured using Motor-Free Visual Perception test-4 (MFVPT-4). Results: VM significantly improved in the experimental group (p < .01), and significant differences were observed compared to the control group (p < .01). There was no significant change in VD. Conclusion: The eye movement program consisting of SEM and PEM increased VM more than VD. Therefore, eye movement program was feasible interventions for improving VM in institutionalized elderly persons.

The Development and Validation of Memory Tasks Using Smart Devices for School Aged Children (학령기 아동용 스마트기기를 사용한 기억력 평가과제의 개발 및 타당도 검증 연구)

  • Shin, Min-Sup;Lee, Jinjoo;Eo, Yunjung;Oh, Seojin;Lee, Jungeun;Kim, Illjung;Hong, Chorong
    • Journal of the Korean Academy of Child and Adolescent Psychiatry
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    • v.27 no.2
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    • pp.130-138
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    • 2016
  • Objectives: The aim of this study was to develop auditory-verbal and visual-spatial memory tasks using smart devices for children aged 8 to 10 years and examine their validity. Methods: One-hundred and fourteen school-aged children were recruited through internet advertising. We developed memory tasks assessing auditory-verbal memory, visual-spatial memory, and working memory, and then examined their construct validity by examining the developmental trend of the children's mean scores with age. In order to examine the concurrent validity of the tasks, we conducted correlation analyses between the children's scores on the newly developed auditory-verbal, visual-spatial memory and working memory tasks and their scores on well-known standardized tests of memory and working memory, including the auditory-verbal memory subtests of the Korean Luria-Nebraska Neuropsychological Battery for Children, Korean Rey-Osterrieth Complex Figure Test, digit span and arithmetic subtest of Korean Educational Development Institute Wechsler Intelligence Scale for Children Revised, and Corsi block test. Results: The memory and working memory scores measured by the newly developed tasks tended to increase with age. Further, there were significant correlations between the scores of the four cognitive tasks and the corresponding scores of the standardized assessment tools. Conclusion: This study revealed promising evidence for the validity of the memory tasks using smart devices, suggesting their utility for school-aged children in research and clinical settings.

A Preliminary Study of Computerized Cognitive Ability Enhancement Program Using Smart-Toy for Children (스마트 토이를 활용한 아동용 인지능력 증진 프로그램의 예비 효과 연구)

  • Shin, Min-Sup;Lee, Jungeun;Lee, Jihyun;Lee, Jinjoo;Kwon, Eunmi;Jeon, Hyejin;Lee, Seunghwan
    • Journal of the Korean Academy of Child and Adolescent Psychiatry
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    • v.28 no.2
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    • pp.106-114
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    • 2017
  • Objectives: This study was to examine the effectiveness of computerized cognitive ability enhancement program (CCAEP) using Smarttoy. The CCAEP using Smart-toy which can interact with children via bluetooth is a kids-friendly and convenient method for improving children's cognitive abilities by increasing their motivation for performing the program. We developed the CCAEP which designed to train auditory-verbal memory, visual-spatial memory, auditory-verbal working memory, and visual-spatial working memory. Methods: Eighteen children aged 8 to 10 participated in CCAEP individual training composed of 8 sessions of 40 minutes each for 4 weeks. The effect of the training was measured with Smart Toyweb's cognitive assessment tasks (smart device based assessment) as well as traditional neuropsychological tests before and after the training. Results: Children showed significant improvement in auditory-verbal memory, visual-spatial memory, auditory-verbal working memory and visual-spatial working memory abilities after the training. Conclusion: This study demonstrated promising results suggesting the effectiveness of CCAEP using Smart-Toy in clinical settings as well as school and home situations. Further controlled study with larger sample size including various clinical groups is needed to confirm the present results.

The Investigation of the Relationship between Eye Blink and Visual Attention with Video Clip (영화클립을 이용한 눈깜빡임과 시각적 주의력과의 상관성 연구)

  • Kim, Sung Kyung;Kang, Min;Kang, Geon Ju;Park, Sujie;Shin, Young Seok;Jang, Dong Pyo
    • Journal of Biomedical Engineering Research
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    • v.35 no.4
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    • pp.99-104
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    • 2014
  • Generally, human eye blinks are closely associated with the cognitive state or visual attention such as attentional requirements on visual stimuli. These previous studies have reported that eye blinks are related to explicit visual attention using blink rate, pattern and blink timing across subjects. However, these results have been obtained in a well-controlled experimental settings. So, it would prove difficult to investigate human's natural response in a continuous and realistic situation. In our study, we measured the eye blink intervals while participants viewed a movie clip. And we analyzed the blink interval data for relationship between visual attention and eye blink intervals. 24 participants took part in two experimental sessions, first session to measure the IEBI while viewing the movie clip and second session to conduct a memory performance test using a self-questionnaire, which were spaced 3 weeks apart. The results indicate significantly higher memory performance at long IEBI period than short IEBI period while watching a movie clip(t = 3.257, df = 17, p < 0.005, 2-tailed). In addition, memory performance score significantly correlated with the IEBI value(spearman's rho = 0.40, N = 36, p < 0.01, 2-tailed). Our results suggest that IEBI is used to measure or assess visual attention while wiewing the movie that it is capable of simulating aspects of real-life experiences by visual attention. Thus, we expect IEBI to be used to measure or assess our visual attention, cognition, further emotion about not only movies, advertisements and other cultural contents but also cognitive science.