The Impact of Selective Spatial Attention on Auditory–Tactile Integration: An Event-Related Potential Study
archive: archived pipeline: cataloged verified
Get this paper ↗ (DOI — opens at the source; we link to it, we don't host it)
Summary
This study investigates how selective spatial attention modulates the temporal dynamics and neural distribution of auditory–tactile integration. While multisensory integration is known to enhance perceptual accuracy and reaction speed, the specific mechanisms by which attention regulates auditory–tactile processing, particularly regarding hemispheric differences, remain unclear. The research aims to determine whether attention accelerates or delays integration and how these processes differ between the left and right hemispaces. The experiment involved twenty participants with normal sensory functions who underwent an event-related potential (ERP) study. Participants received auditory, tactile, or simultaneous auditory–tactile stimuli presented randomly to the left or right side. In each block, participants were instructed to attend to stimuli on one designated side and detect uncommon target stimuli while ignoring stimuli on the opposite side. EEG data were recorded using 64 scalp electrodes. Integration was quantified by comparing the neural response to combined stimuli against the algebraic sum of responses to unisensory stimuli. The analysis focused on four specific time windows (70–90 ms, 90–110 ms, 110–130 ms, and 180–220 ms) and seven electrodes of interest to assess spatiotemporal distributions. The results revealed systematic differences in auditory–tactile integration based on spatial location and attention. When stimuli were presented in the left hemispace, integration occurred earlier and involved more brain regions under attended conditions compared to unattended conditions. Conversely, when stimuli were presented in the right hemispace, the unattended condition showed earlier integration and involved a more extensive range of brain regions than the attended condition. These findings indicate that attention does not uniformly accelerate multisensory integration across all spatial locations. The study concludes that selective spatial attention significantly modulates auditory–tactile integration, with distinct effects depending on whether the stimulus is in the left or right hemispace. These findings contribute to the understanding of the neural mechanisms underlying multisensory information processing, highlighting the complex interplay between attention, spatial location, and sensory integration. The results suggest that the brain’s processing of auditory–tactile information is not solely driven by attentional enhancement but involves lateralized neural dynamics that vary by hemispace.
Provenance
The full processing record for this entry. Every stage of this paper's journey through the pipeline is logged — what ran, with which tool and model, how many attempts it took, and when it last completed.
| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | Crossref | — | — | 1 | 2026-08-09 |
| archive | success | openalex | — | — | 5 | 2026-08-09 |
| extract | success | pdftotext | — | — | 4 | 2026-08-10 |
| clean | success | clean | — | — | 2 | 2026-08-10 |
| chunk | success | chunk | — | — | 2 | 2026-08-10 |
| embed | success | embed | Qwen/Qwen3-Embedding-8B | — | 2 | 2026-08-10 |
| promote | success | — | — | — | 1 | 2026-08-09 |
| summarize | success | llm | qwen3.6-27b-nvidia | summ-v5 | 2 | 2026-08-10 |
| tag | success | vector_similarity | — | — | 17 | 2026-08-11 |
| verify | success | — | — | — | 2 | 2026-08-10 |
Summary generated by qwen3.6-27b-nvidia on 2026-08-10; verification: verified.
Topics
Ranked by relevance to this paper. Hover a topic for its definition.