Using Co-Registration of Eye Movements and Electroencephalography to Investigate Ageing Effects on Word Recognition during Natural Reading

利用眼动和脑电图的联合注册来研究自然阅读过程中老化对单词识别的影响

• 批准号: 2433179
• 金额: --
• 依托单位: University of Leicester
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2433179
• 关键词: Using; Co; Registration; Eye; Movements

Reading is an important life skill. Additionally, regular reading in later age may help build up cognitive reserve, thus making us more resilient to effects of ageing or disease. It is therefore important to understand normal ageing effects on cognitive processes associated with reading. Despite this, the focus has mainly been on young adults, and little is known about changes as we age.Two methods which have been used extensively to investigate reading are electroencephalography (EEG) and eye-tracking. EEG is a non-invasive cognitive neuroscience method which can directly measure neural responses to stimuli. When combined with psycholinguistic theories, cognitive processes can be inferred from timing and magnitude of responses, known as event-related potentials (ERPs). By comparing ERPs across age groups, it is possible to infer whether processing differs. However, this method is limited when studying reading because it cannot accurately determine when eyes are fixated on certain words, and eye movements cause artefacts in EEG data. Therefore, experiments have typically used paradigms with low ecological validity, where one word is presented at a time in the centre of the screen for a fixed period. This does not allow for individual differences in reading speeds and processing of words in parafoveal vision. Conversely, eye-tracking does allow natural reading paradigms to be used. This behavioural method is used to imply where attention is focused and for how long. However, unlike EEG, it does not directly measure neural activity, and thus cannot investigate underlying cognitive processes whilst the eyes are fixated on a word.

阅读是一项重要的生活技能。此外，在晚年定期阅读可能有助于建立认知储备，从而使我们更能适应衰老或疾病的影响。因此，了解正常老化对与阅读相关的认知过程的影响是很重要的。尽管如此，研究的重点主要集中在年轻人身上，对我们年龄的变化知之甚少。两种广泛用于研究阅读的方法是脑电图（EEG）和眼动追踪。脑电是一种非侵入性的认知神经科学方法，可以直接测量神经对刺激的反应。当与心理语言学理论相结合时，认知过程可以从反应的时间和幅度推断出来，称为事件相关电位（ERP）。通过比较不同年龄组的ERP，可以推断处理过程是否不同。然而，这种方法在研究阅读时是有限的，因为它不能准确地确定眼睛何时注视某些单词，并且眼睛运动会导致EEG数据中的伪影。因此，实验通常使用具有低生态有效性的范例，其中一个单词在屏幕中心的一段固定时间内呈现。这不允许在旁视中阅读速度和处理单词的个体差异。相反，眼动追踪确实允许使用自然的阅读范例。这种行为方法用于暗示注意力集中在哪里以及持续多久。然而，与EEG不同的是，它不直接测量神经活动，因此当眼睛盯着一个单词时，它不能研究潜在的认知过程。