Developmental Phonological Dyslexia: Neural Mechanisms

发展性语音阅读障碍：神经机制

• 批准号: 7091558
• 负责人: RICHARD Eugene FRYE
• 金额: $ 16.13万
• 依托单位: UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON
• 依托单位国家: 美国
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-07-01 至 2010-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7091558
• 关键词: auditory feedback; behavioral /social science research tag; clinical research; developmental psychology; dyslexia; human subject; intelligence; magnetic resonance imaging; magnetoencephalography; neural information processing; neuropsychology; patient oriented research; phonology; reading; visual feedback; visual stimulus

DESCRIPTION (provided by applicant): This NINDS Mentored Patient-Oriented Research Career Development Award (K23) entitled "Developmental Phonological Dyslexia: Neural Mechanisms" proposes to develop the candidate's competence in patient care and research in the field of developmental cognitive neuroscience, with a focused application of recent advances from this field to the understanding and treatment of developmental disorders of cognition. The candidate will pursue coursework in clinical effectiveness, ethics and neuroimaging, clinical duties involving children and young adults with learning disorders, and research. The research component will focus on mechanisms underlying compensation for the non-fluent, inaccurate reading seen in dyslexic readers. The work will take place at Boston University, the MGH/MIT/HMS Athinoula A. Martinos Imaging Center, the Children's Hospital Boston, and the Harvard School of Public Health. Despite the fact that behavioral observations suggest that developmental phonological dyslexic readers rely on whole word (lexical), rather than phonological (sub-lexical) processing, most neuroimaging studies have concentrated on the dysfunction of the phonological processing system rather than on comparing the functional roles of the 2 word processing systems in dyslexic and normal readers. In the proposed study, participants, during magnetoencephalography (MEG) recording, will judge whether 2 sequential visually presented words or pronounceable non-words rhyme. The visual rhyme stimuli will be specifically designed to activate only 1 of the 2 classically recognized word processing systems. Using anatomically-constrained MEG each system will be tested separately, as well as the dynamic interaction between them, in 3 separate experiments carried out in normal and dyslexic readers. The subgroup of phonologically dyslexic readers will be identified from a larger group of poor readers using specific tests of reading ability and matched to normal readers in terms of age, sex and a non-verbal measure of general intelligence. The proposed research project and educational components will allow the candidate to improve his skills as a clinical investigator and to gain the experience and knowledge for influencing public health and educational policy. In addition, the insight provided by this research will help guide the development of improved methods of diagnosis, rehabilitation, treatment and long-term monitoring of individuals with developmental cognitive disorders.

描述（由申请人提供）：这个NINDS指导的以患者为导向的研究职业发展奖（K23）题为“发育性语音诵读困难：神经机制”，旨在发展候选人在发展认知神经科学领域的患者护理和研究能力，重点应用该领域的最新进展，以理解和治疗认知发育障碍。候选人将继续临床有效性，伦理学和神经影像学，涉及儿童和年轻人的临床职责学习障碍和研究课程。研究内容将集中在阅读障碍者对不流利、不准确阅读的补偿机制。这项工作将在波士顿大学MGH/MIT/HMS Athinoula A进行。Martinos影像中心，波士顿儿童医院和哈佛公共卫生学院。尽管事实上，行为观察表明，发展性语音障碍的读者依赖于整个字（词汇），而不是语音（亚词汇）的处理，大多数神经影像学研究集中在语音处理系统的功能障碍，而不是比较功能的作用，2个字处理系统的阅读障碍和正常的读者。在这项研究中，受试者在脑磁图（MEG）记录过程中，将判断2个连续的视觉呈现的单词或可发音的非单词是否押韵。视觉押韵刺激将被专门设计为仅激活2个经典识别的文字处理系统中的1个。使用解剖学约束的MEG，每个系统将分别进行测试，以及它们之间的动态相互作用，在正常和阅读障碍的读者进行3个单独的实验。语音障碍阅读者的亚组将使用特定的阅读能力测试从一个较大的贫困阅读者群体中识别出来，并在年龄、性别和一般智力的非语言测量方面与正常阅读者相匹配。拟议的研究项目和教育部分将允许候选人提高他作为临床研究者的技能，并获得影响公共卫生和教育政策的经验和知识。此外，这项研究所提供的见解将有助于指导开发更好的诊断，康复，治疗和长期监测发育性认知障碍患者的方法。