Feature activation during word recognition: action, visual, and associative-semantic priming effects

Area of Science:

• Cognitive Neuroscience
• Psycholinguistics
• Language Processing

Background:

• Embodied theories of language propose meaning is grounded in modality-specific brain regions for perception and action.
• The precise timing of how modality-specific information interacts with lexical-semantic processing is not fully understood.

Purpose of the Study:

• To investigate the relative timing of action-based and visual-form information in lexical-semantic comprehension.
• To determine the temporal dynamics of feature activation during word recognition.

Main Methods:

• A behavioral priming paradigm using a Go/No-Go lexical decision task.
• Examined priming effects across four inter-stimulus intervals (ISIs: 100, 250, 400, 1000 ms).
• Words were related by action features, visual features, or semantic association.

Main Results:

• Action priming effects were observed at ISIs of 100, 250, and 1000 ms.
• Visual priming effects were significant only at the 1000 ms ISI.
• Feature activation during word recognition follows distinct temporal patterns.

Conclusions:

• The time course of feature activation during word recognition is dynamic and varies across feature types.
• Multiple inter-stimulus intervals are crucial for mapping the temporal dynamics of feature activation.
• Findings provide empirical support for embodied theories of language by detailing the temporal contribution of modality-specific information.