Neurocognitive mechanisms of uninstructed dynamic belief updating and pre-clinically relevant interindividual differences in infancy
无指导的动态信念更新的神经认知机制和婴儿期临床前相关的个体差异
基本信息
- 批准号:521852095
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Research Units
- 财政年份:
- 资助国家:德国
- 起止时间:
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
Background: Statistical learning mediates the developmental phase of infancy, which is shaped by temperament and social interactions. High reactivity is linked to later risks for anxiety, while responsive interactions enhance social development. Still little is known about infants’ statistical learning in volatile environments and the neurocognitive mechanisms of prediction error (PE) and dynamic belief updating (DynBU). Also, the relations between DynBU in infancy and differences in temperament and social-interactional experiences as sources of potentially maladaptive, clinically-relevant development have remained unexplored. Infants are a test case to investigate natural incidental learning. While uninstructed incidental learning is ubiquitous, it is currently not well understood even in adults.Aims: We investigate (i) infants’ neurocognitive mechanisms with pupil responses to discrete violations of expectations in deterministic scenarios, and to continuous PE under expected uncertainty; (ii) infants’ DynBU in response to change points (CP) during unexpected uncertainty, its relation to cortical network reset, and uninstructed incidental DynBU in adults; (iii) developmentally relevant interindividual differences related to social interaction and pre-clinical dimensions of temperament.Hypotheses: Infancy may be characterized by a relative underresponsiveness to updating. Behavioral inhibition and high reactivity should relate to overadjusting DynBU. Reduced rates of parent-infant interactions should indicate decreased experiences of certainty and lead to overadjustment in DynBU, in interaction with temperament. Infants’ initial arousal should decrease with increasingly expected uncertainty, and reactions should be sensitive to parametric PE. CPs should lead to increased arousal and to marked changes in EEG power and cortical network activity. If uninstructed DynBU recruits similar mechanisms as explicit instructed DynBU, adult data should fit the known cognitive models. Planned methods: We adopt the RU’s task to an incidental visual prediction paradigm for 1-year-old infants. Stimuli can become expected either due to habituation, or statistical learning of a distribution, or updated beliefs about changes in the distribution. We will measure looking times, pupillary change, ERPs and oscillations in alpha and theta power bands in frontal and dorsal brain networks. Concurrently, we will collect behavioral, neurophysiological, and questionnaire measures on infants’ temperament and social interaction. We will use the method with adults to provide data for computational model comparisons.Expected impact: The project reveals ontogenetic origins and neurocognitive mechanisms of DynBU as starting point of further development. It provides insights into ontogenetic sources of potentially maladaptive clinically relevant development. It advances modelling and provides ecologically valid insights into uninstructed incidental DynBU.
背景:统计学习调节婴儿期的发育阶段,这是由气质和社会互动形成的。高反应性与后来的焦虑风险有关,而反应性互动则促进了社会发展。然而,关于婴儿在波动环境中的统计学习以及预测错误(PE)和动态信念更新(DynBU)的神经认知机制还知之甚少。此外,DynBU在婴儿期和气质和社会互动经验的差异作为潜在的适应不良,临床相关的发展来源之间的关系仍然没有探索。婴儿是研究自然附带学习的一个测试案例。虽然无指导的附带学习是普遍存在的,但目前即使在成年人中也没有得到很好的理解。目的:我们研究了(i)婴儿在确定性情景中对离散违反预期的反应和在预期不确定性下对连续PE的反应的神经认知机制;(ii)婴儿在意外不确定性期间对变点(CP)的DynBU反应,其与皮质网络重置的关系,和未经指示的偶然DynBU在成年人;(iii)发展相关的个体间差异与社会互动和临床前的气质尺寸。假设:婴儿期的特点可能是一个相对反应不足的更新。行为抑制和高反应性应与过度调节DynBU有关。父母-婴儿互动率的降低应表明确定性经验的减少,并导致DynBU的过度调整,与气质的相互作用。随着预期不确定性的增加,婴儿的初始唤醒应该减少,反应应该对参数PE敏感。CP应该会导致觉醒增加,EEG功率和皮层网络活动发生显著变化。如果未经指导的DynBU招募类似的机制,明确指示DynBU,成人数据应符合已知的认知模型。计划的方法:我们采用RU的任务为1岁的婴儿偶然的视觉预测范式。由于习惯化、对分布的统计学学习或对分布变化的更新信念,刺激可以成为预期的。我们将测量注视时间、瞳孔变化、ERP以及额叶和背侧脑网络中α和θ功率带的振荡。同时,我们将收集有关婴儿气质和社会交往的行为、神经生理和问卷测量。我们将使用的方法与成年人提供的数据计算模型comparisons.Expected影响:该项目揭示了个体发育的起源和DynBU的神经认知机制作为进一步发展的起点。它提供了潜在的适应不良的临床相关的发展的个体发育来源的见解。它推进了建模,并提供了生态上有效的见解未经指示的偶然DynBU。
项目成果
期刊论文数量(0)
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Professor Dr. Ulf Liszkowski其他文献
Professor Dr. Ulf Liszkowski的其他文献
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The predictive role of preverbal gestural communication for the development of language and preschool skills: A longitudinal study emphasizing language delay and bilingualism
语言前手势交流对语言和学前技能发展的预测作用:一项强调语言延迟和双语的纵向研究
- 批准号:
222349122 - 财政年份:2012
- 资助金额:
-- - 项目类别:
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