Identification of electrophysiological indices of speech sound perception and cha
语音感知电生理指标及特征的识别
基本信息
- 批准号:8765508
- 负责人:
- 金额:$ 32.31万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2014
- 资助国家:美国
- 起止时间:2014-08-01 至 2017-07-31
- 项目状态:已结题
- 来源:
- 关键词:AccountingAddressAffectAgeAreaAuditoryBehavioralCategoriesChildClinicalClinical ManagementCommunicationDevelopmentDiscriminationDiseaseEvaluationEvent-Related PotentialsFamilyHearingIncidenceInterventionLanguageLeadLearningMeasuresMethodsNatureOutcomePathologistPatternPerceptionProductionReadingResearchScalp structureSensorySensory ProcessSourceSpecific qualifier valueSpeechSpeech DiscriminationSpeech PerceptionSpeech SoundSystemTechniquesTestingTimeTrainingTreatment EfficacyUnited StatesWorkbaseeffective therapyimprovedindexinginnovationneuromechanismoutcome forecastpeerphonologyprogramspublic health relevancerelating to nervous systemresponsesensory systemskillssocialsoundspeech accuracyspellingstemtreatment program
项目摘要
DESCRIPTION (provided by applicant): Children with speech sound disorders (SSD) have difficulty producing, using, and integrating the sounds of their target language system. In addition, some children with SSD have difficulty perceiving and categorizing speech sounds into separate sound categories suggesting that their auditory sensory responses may also be impaired. While children with SSD are traditionally thought to be unable to detect subtle differences between sounds, there is little or no understanding of the underlying perceptual mechanisms implicated in SSD. Based on our own work and that that of existing evidence, we suggest that children with SSD may have difficulty creating phonological representations due to their inaccurate perception of speech sounds, which then directly affects their ability to produce speech sounds correctly. Since the incidence of SSD is relatively high (5-8%), a good understanding of the underlying nature of the disorder could improve the lives of many children and their families by informing clinical management of the disorder. Thus, assessment and treatment could target all areas of deficiency, including speech production and speech perception. We propose to address this important issue by using electrophysiological measures (event-related potentials, ERPs) to assess auditory sensory response measures in children with SSD and their age-matched typically developing (TD) peers. This will allow for a better understanding of the underlying neural mechanisms associated with the development of speech sound production. If children with SSD have atypical speech sound encoding and discrimination deficits, their ERP responses will differ from the outcomes of TD children. Moreover, changes in the auditory sensory responses of the children with SSD that occur in conjunction with two different speech treatment approaches (one with and one without speech perception training) will be assessed; this will allow for a better understanding of how the neural mechanisms associated with SSD change over time. It is predicted that the speech treatment program that includes perceptual training will enhance the phonological representations of children with SSD above and beyond what occurs with traditional speech treatment alone, resulting in ERP amplitude and latency waveform changes. This research program is significant because accurate speech perception affects speech sound production, as well as academic skills such as reading and spelling. Thus, having poor speech perception impacts children's overall ability to effectively communicate and learn. This study is innovative due to its use of ERPs to identify the typical and/or atypical neural response patterns underlying the perception of speech sounds in children with SSD. In addition, changes in the ERP waveforms that occur after a period of speech treatment could be indicative of improved speech perception abilities and effective treatment techniques, resulting in more specified phonological representations. Identifying whether abnormal auditory sensory processing is present in children with SSD will significantly impact how the disorder is assessed, characterized, and treated.
描述(申请人提供):患有语音障碍(SSD)的儿童在产生、使用和整合目标语言系统的声音方面存在困难。此外,一些患有SSD的儿童在感知语音和将语音分类为不同的声音类别方面存在困难,这表明他们的听觉反应也可能受损。虽然传统上认为患有SSD的儿童无法察觉声音之间的细微差异,但对SSD所涉及的潜在感知机制的了解很少或根本没有。根据我们自己的工作和现有证据,我们认为患有SSD的儿童可能由于对语音的不准确感知而在创建语音表征方面存在困难,这直接影响了他们正确发音的能力。由于SSD的发病率相对较高(5-8%),因此了解该疾病的潜在性质可以通过告知该疾病的临床管理来改善许多儿童及其家庭的生活。因此,评估和治疗可以针对所有缺陷领域,包括语音产生和语音感知。我们建议通过使用电生理测量(事件相关电位,ERPs)来评估SSD儿童及其年龄匹配的典型发育(TD)同龄人的听觉反应测量来解决这一重要问题。这将有助于更好地理解与语音产生发展相关的潜在神经机制。如果SSD儿童有非典型语音编码和辨别缺陷,他们的ERP反应将不同于TD儿童的结果。此外,将评估两种不同的言语治疗方法(一种接受言语知觉训练,另一种不接受言语知觉训练)对SSD儿童听觉反应的影响;这将有助于更好地理解与SSD相关的神经机制如何随时间变化。我们预测,包含知觉训练的言语治疗方案会增强SSD儿童的语音表征,而不仅仅是传统的言语治疗,从而导致ERP振幅和潜伏期波形的变化。这个研究项目意义重大,因为准确的语音感知会影响语音的产生,以及阅读和拼写等学术技能。因此,言语感知能力差会影响儿童有效沟通和学习的整体能力。这项研究具有创新性,因为它使用erp来识别SSD儿童语音感知的典型和/或非典型神经反应模式。此外,经过一段时间的语音处理后,ERP波形的变化可能表明语音感知能力的提高和有效的处理技术,从而导致更具体的语音表征。确定SSD患儿是否存在异常的听觉感觉处理,将对该疾病的评估、表征和治疗产生重大影响。
项目成果
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