Punctuation and Implicit Prosody in Silent Reading: An ERP Study Investigating English Garden-Path Sentences

Area of Science:

• Cognitive Psychology
• Psycholinguistics
• Neuroscience

Background:

• Prosody, the rhythm and intonation of speech, influences sentence comprehension.
• The role of implicit prosody during silent reading remains underexplored.
• Understanding how prosodic cues affect syntactic parsing is crucial for reading research.

Purpose of the Study:

• To investigate the impact of comma-induced covert prosody on syntactic parsing during silent reading.
• To examine whether implicit prosodic boundaries, signaled by commas, affect ambiguity resolution.
• To determine the extent to which speech processing mechanisms contribute to silent reading.

Main Methods:

• Two event-related potential (ERP) reading experiments were conducted.
• Experiment 1 used a 2x2 design manipulating comma presence to affect sentence plausibility.
• Experiment 2 replicated an auditory study on overt prosodic boundaries in closure ambiguity.

Main Results:

• Commas reliably elicited closure positive shift (CPS) components in ERPs.
• The presence or absence of commas significantly influenced syntactic parsing decisions.
• Commas played a dominant role in resolving input ambiguity during reading.

Conclusions:

• Covert prosody, signaled by punctuation like commas, actively influences syntactic parsing in silent reading.
• These findings support the active role of speech processing mechanisms in silent reading.
• Punctuation serves as a vital implicit cue for readers navigating sentence structure.