Activation of phonological codes during eye fixations in reading

Area of Science:

• Cognitive Psychology
• Psycholinguistics
• Reading Science

Background:

• Understanding the timing of phonological code activation during reading is crucial for models of visual word recognition.
• The fast-priming technique allows researchers to probe cognitive processes occurring very early in a fixation.

Purpose of the Study:

• To investigate whether phonological codes are activated early in a fixation during reading.
• To examine the influence of lexical properties, such as word frequency, on phonological code activation.
• To explore the interaction between orthographic and phonological processing during reading.

Main Methods:

• Utilized the fast-priming technique with sentence reading.
• Displayed priming letter strings at the beginning of the initial fixation on a target word.
• Assessed phonological priming by comparing gaze durations on target words when primes were homophones versus orthographically similar control words.
• Manipulated prime word frequency (high vs. low).

Main Results:

• Demonstrated significant homophonic priming effects with short prime durations (approx. 35 ms).
• Priming effects were observed only for high-frequency word primes, suggesting lexicality influences phonological code extraction speed.
• Evidence for orthographic priming was also found.
• Data indicated a mutually facilitating interaction between orthographic and phonological priming.

Conclusions:

• Phonological codes are activated early in a fixation during reading, with speed influenced by lexical factors like word frequency.
• Orthographic and phonological processing interact dynamically during visual word recognition.
• Findings contribute to a more nuanced understanding of the temporal dynamics of reading processes.