@article{ETD, recid = {376}, author = {Huang, Yonghong}, title = {Event-related potentials in electroencephalography characteristics and single-trial detection for rapid object search}, publisher = {Oregon Health and Science University}, school = {Ph.D.}, address = {2010}, number = {ETD}, abstract = {Brain–computer interfaces (BCIs) enable communication and device control without muscle movement and offer important benefits for people with severe motor impairments. This thesis develops a more efficient EEG‑based BCI that detects event‑related potentials (ERPs) from single trials, improving throughput for visual image search. Using cross‑session training, a hybrid generative–discriminative classifier, and computationally efficient learning methods, the system achieves strong ERP detection without performance loss. The thesis also identifies a neural correlate of visual perception by linking ERP responses to task and target difficulty, suggesting that the brain dynamically increases cognitive resource allocation during challenging visual‑recognition tasks.}, url = {http://digitalcollections.ohsu.edu/record/376}, doi = {https://doi.org/10.6083/M48P5XGJ}, }