Korean Journal of Psychology : General
[ Article ]
The Korean Journal of Psychology: General - Vol. 40, No. 3, pp.329-349
ISSN: 1229-067X (Print)
Print publication date 25 Sep 2021
Received 22 Mar 2021 Revised 27 Jul 2021 Accepted 07 Sep 2021
DOI: https://doi.org/10.22257/kjp.2021.9.40.3.329

난독증 연구를 통해서 본 시각 시스템과 읽기 처리 과정의 관계

주성준
On the relationship between visual system in the reading process: learning from dyslexia research
Sung Jun Joo
Pusan National University

Correspondence to: 주성준, 부산대학교 심리학과, 전임교원, 부산광역시 금정구 부산대학로 63번길 2, E-mail: sjjoo@pusan.ac.kr

초록

읽기는 인간만이 향유하는 상위 인지 기능 중 하나이다. 시각 시스템은 읽기 학습 동안 발생하는 뇌의 학습과 가소성을 연구하기 위해 적합한 뇌의 영역이다. 특히, 상위 시각 영역은 읽기 학습 이전에는 단어에 대해 선택적으로 반응하지 않지만, 성공적인 읽기 학습을 통해 기존의 다른 기능을 담당하는 영역들 사이에서 단어에 대한 선택적 반응을 하는 단어 영역을 형성한다. 또한 시각 시스템은 읽기를 수행하는 동안 읽기 회로 중 가장 먼저 정보처리를 하는 뇌의 영역이다. 하지만 읽기 처리 과정을 위한 시각 시스템의 역할에 대한 연구는 언어 영역 등 상위 인지 영역의 연구에 비해 주목을 받지 못했다. 본 논문에서는 읽기와 밀접한 관계가 있는 시각 시스템의 기능에 대해 개관하고, 읽기 학습 장애인 난독증 연구 결과를 토대로 읽기 처리 과정에 대한 시각 시스템의 기능에 대해 논할 것이다. 끝으로 임의의 시각자극인 문자 언어와 이에 대응하는 음성 언어를 연합하는 다중 감각 정보처리 과정으로서의 읽기에 대해 논의할 것이다. 본 논문에서 개관하는 선행 연구들은 시각 시스템이 읽기 발달에 매우 중요한 역할을 한다는 것과 시각 시스템의 문제로 인한 난독증 발생의 가능성을 보여주었다. 따라서 읽기에 대한 시각 시스템의 역할을 이해하는 것은 성공적인 읽기 학습을 위한 신경 기제를 규명할 뿐만 아니라 읽기 학습 장애인 난독증 치료를 위한 효과적인 중재 프로그램 개발에 매우 중요한 연구 주제이다.

Abstract

Only humans possess the high-level cognitive function of reading. The visual system is the best platform to study learning and plasticity of the brain during learning to read. For example, the high-level visual areas of the illiterate brain do not selectively respond to words, and only after successful reading acquisition, the visual word form area emerges from the already established areas that selectively respond to various object categories. Furthermore, in the reading circuitry, the visual system is at the front end of reading process. However, compared to research on language and high-level cognitive areas, the role of the visual system in reading has attracted little attention. In this review paper, we summarize the reading-related function of the visual system and discuss how deficits in the visual system relate to developmental dyslexia, learning disability in reading based on dyslexia research. Finally, we discuss reading as multi-sensory processing, in which one should associate arbitrary visual symbols with speech sounds. Previous research has shown the important role of the visual system in reading development and suggested deficits in the visual system might cause dyslexia. Our research suggests that intervention programs for dyslexia as well as research on reading development should include the results from research on the visual system.

Keywords:

reading, the visual system, dyslexia, multi-sensory

키워드:

읽기, 시각 시스템, 난독증, 다중 감각

Acknowledgments

이 논문은 부산대학교 기본연구지원사업(2년)에 의해 연구되었음.

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