Alljoined 1.6M: 1.6 Million Visual Stimulus EEG Trials from 20 Subjects

Alljoined 1.6M provides over 1.6 million electroencephalography (EEG) visual stimulus trials collected from 20 participants as part of the THINGS initiative. Created by the Alljoined team and documented in arXiv:2508.18571, it contains more than double the volume of the previous THINGS-EEG2 benchmark.

Use Cases

• Decoding visual object categories from EEG signal patterns recorded during stimulus presentation
• Training cross-modal alignment models between image features and brain activity across 1.6 million trials
• Evaluating the generalizability of neural decoding algorithms across 20 individual participants

Strengths

• 1.6 million total trials
• 20 unique participants
• Peer-reviewed methodology (arXiv:2508.18571)
• Standardized CC BY-NC-SA 4.0 licensing

Limitations

• Small participant pool of 20 subjects may limit generalizability to the broader population
• Restricted to visual stimulus modalities only

Provenance

Source

Alljoined / THINGS initiative

Collection Method

sensor (EEG)

Freshness

Last updated March 2026.

Geography

United States