阅读时听觉新奇引起的注意力分散:眼跳计划中断的证据,但不是眼跳执行的证据
Distraction by auditory novelty during reading: Evidence for disruption in saccade planning, but not saccade execution
摘要:
新奇或意外的声音偏离了相同声音的重复序列,导致行为分心。最近的研究表明,分心也发生在阅读过程中的固定持续时间增加时,一个偏离的声音出现在固定开始的话。本研究测试的假设,这种增加的固定时间发生由于扫视抑制。这是通过操纵相对于文本中单词的固定开始的声音的时间开始来完成的。如果新的声音会引起扫视抑制,那么在注视的后半部分,当扫视编程通常发生时,它们应该会更分散注意力。参与者阅读单个句子,当他们注视句子中的五个目标词时,听到120毫秒的声音。在大多数情况下(p= 0.9),呈现相同的正弦波音调(“标准”),而在其余情况下(p= 0.1),呈现新的声音(“新”)。重要的是,在固定的前半部分(0 ms延迟)或固定的后半部分(120 ms延迟)期间播放声音。与扫视抑制假说一致,与0 ms延迟条件相比,120 ms内的新声音导致更长的注视持续时间。然而,新的声音一般不会影响随后的眼跳的执行。这些结果表明,意想不到的声音有快速的影响扫视规划,但不是扫视执行。
英文摘要:
Novel or unexpected sounds that deviate from an otherwise repetitive sequence of the same sound cause behavioural distraction. Recent work has suggested that distraction also occurs during reading as fixation durations increased when a deviant sound was presented at the fixation onset of words. The present study tested the hypothesis that this increase in fixation durations occurs due to saccadic inhibition. This was done by manipulating the temporal onset of sounds relative to the fixation onset of words in the text. If novel sounds cause saccadic inhibition, they should be more distracting when presented during the second half of fixations when saccade programming usually takes place. Participants read single sentences and heard a 120 ms sound when they fixated five target words in the sentence. On most occasions (p= 0.9), the same sine wave tone was presented ("standard"), while on the remaining occasions (p= 0.1) a new sound was presented ("novel"). Critically, sounds were played either during the first half of the fixation (0 ms delay) or during the second half of the fixation (120 ms delay). Consistent with the saccadic inhibition hypothesis, novel sounds led to longer fixation durations in the 120 ms compared to the 0 ms delay condition. However, novel sounds did not generally influence the execution of the subsequent saccade. These results suggest that unexpected sounds have a rapid influence on saccade planning, but not saccade execution.
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