An ERP Study of Modality-Specific Effects on Emotional Word Processing

Area of Science:

• Cognitive Neuroscience
• Psycholinguistics
• Embodied Cognition

Background:

• Conceptual knowledge is built upon sensory and emotional information.
• Interoception plays a key role in representing emotional concepts, yet its specific effects on emotional word processing are understudied.
• The interplay between emotional valence and sensory experiences in word processing requires further investigation.

Purpose of the Study:

• To investigate the influence of interoceptive and visual sensory information on emotional word processing.
• To examine the timing of emotional valence interactions with sensory experiences during word processing.
• To determine the extent to which emotional words are grounded in different sensory modalities.

Main Methods:

• Utilized an event-related potential (ERP) study design.
• Employed a lexical decision task to assess word processing.
• Compared behavioral and electrophysiological responses to interoceptive and visual emotional words.

Main Results:

• Behavioral data revealed significant differences based on sensory modality (interoceptive vs. visual) and emotional valence (positive vs. negative).
• ERP findings showed modality-specific effects, with interoception facilitating semantic retrieval and integration of emotional words.
• Negative words exhibited a negativity bias, while positive words showed a positivity bias at different processing stages.

Conclusions:

• Emotional word processing involves dynamic valence effects, including negativity and positivity biases.
• Interoception significantly enhances the semantic processing and integration of emotional words.
• Findings support the modality-specific hypothesis within interoceptive embodied cognition, offering insights into emotional language grounding.