Early Frontal qEEG Markers Predict Delayed Cognitive Recovery After Mild-to-Moderate Ischemic Stroke: A Prospective Cohort Study - Vy Tuong Nguyen; Trang Ho Thu Quach; Hiep Do; Kien Trung Duong; Khoa Nhat Bui; An Gia Pham; Huong Ha; Thang Cong Tran (Clinical EEG and Neuroscience, 2026)