The Influence of Bilateral Eye Movement on Recognition Memory Task Performance

Bo-Ra Lee; Ji-Woong Kim; Suk-Won Kwon; Hyuk-Chan Kwon; Ki-Woong Kim; Min-Young Kim; Ji-Eun Kim; Kwon-Kyu Yu; Yong-Ho Lee; Sang-Hyun Lim

doi:10.4306/jknpa.2012.51.5.335

Journal List > J Korean Neuropsychiatr Assoc > v.51(5) > 1017600

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Lee, Kim, Kwon, Kwon, Kim, Kim, Kim, Yu, Lee, and Lim: The Influence of Bilateral Eye Movement on Recognition Memory Task Performance

Original Article

Journal of Korean Neuropsychiatric Association

Journal of Korean Neuropsychiatric Association 2012; 51(5): 335-341.

Published online: 30 September 2012

DOI: https://doi.org/10.4306/jknpa.2012.51.5.335

The Influence of Bilateral Eye Movement on Recognition Memory Task Performance

Bo-Ra Lee, MD¹, Ji-Woong Kim, MD, PhD¹, Suk-Won Kwon, PhD², Hyuk-Chan Kwon, PhD², Ki-Woong Kim, PhD², Min-Young Kim, PhD², Ji-Eun Kim, MS^2,³, Kwon-Kyu Yu, MS², Yong-Ho Lee, PhD², Sang-Hyun Lim, MS^2,³

¹Department of Psychiatry, Konyang University College of Medicine, Konyang University Hospital, Daejeon, Korea.

²Brain and Cognition Measurement Laboratory, Division of Convergence Technology, Korea Research Institute of Standards and Science, Daejeon, Korea.

³Department of Medical Physics, University of Science and Technology, Daejeon, Korea.

Address for correspondence: Ji-Woong Kim, MD, PhD. Department of Psychiatry, Konyang University College of Medicine, Konyang University Hospital, 158 Gwanjeodong-ro, Seo-gu, Daejeon 302-182, Korea. Tel +82-42-600-9160, Fax +82-42-600-9090, Cortex@konyang.ac.kr

Received 25 May 2012 Revised 31 July 2012 Accepted 13 August 2012

Abstract

Objectives

Recently, Interest has been increase on the cognitive and emotional effects of bilateral eye movement. However, there is little research related to the subject in Korea. In this study, we evaluated the effects of bilateral eye movement to memory.

Methods

There were a total of 24 subjects between the ages of 18 and 45. All were right-handed. The subjects first studied words, and then performed recognition memory task about the words after bilateral eye movement and eye fixation. The results (recognition accuracy, response bias, mean response to hits) were compared and analyzed. In addition, We evaluated whether the results differ according to the type of word. Repeated measure analysis of variance was performed for statistical analysis.

Results

The main effects on condition [F(1, 23)=9.39, p<0.05] and word type [F(1, 23)=33.727, p<0.05] in recognition accuracy were statistically significant. Also main effect of mean response time to hits was observed [F(1, 23)=66.482, p<0.05].

Conclusion

These results suggest that bilateral eye movement enhance recognition accuracy than eye fixation. In this study, bilateral eye movement that affects cognition were investigated.

Keywords: Bilateral eye movement, Recognition memory task, Recall

Figures and Tables

Fig. 1

Recognition accuracy (Pr) for word type and eye movement condition. ^* : p<0.05.

Fig. 2

Mean response time to hits for word type and eye movement condition. ^* : p<0.05.

Table 1

Demographic characteristics of participants

n : Number, M : Mean, SD : Standard deviation, K-WAIS IQ : Korean-Wechsler Adult Intelligence Scale intelligence quotients

Table 2

Recognition accuracy (Pr) and response bias (Br) and mean response time to hits (msec) values as a function of memory task and eye movement condition

Recognition accuracy (Pr)=(number of target say OLD+0.5/number of target+1)/(number of novel say OLD+0.5/number of targets+1), Response bias (Br)=false alarm rate/(1-Pr). Recognition accuracy is estimated by the discrimination index (Pr : hit rate-false alarm rate, where hit rate=hits+0.5/number of OLD item+1 and false alarm rate=false alarms+0.5/number of OLD items+1). Response bias (Br=false alarm rate/[1-Pr] was also calculated. ^* : p<0.05. M : mean, SD : Standard deviation

Table 3

Repeated measure analysis of variance of recognition accuracy (Pr) for word type and eye movement condition

^* : p<0.05

Notes

The authors have no financial conflicts of interest.

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