D. P. X. KanV. W. W. LimP. F. Lee2024-12-302024-12-3020159783319122618978331912262510.1007/978-3-319-12262-5_70https://dspace-cris.utar.edu.my/handle/123456789/9204Signal Conversion from Attention Signals to Light Emitting Diodes as an Attention Level Indicatorbook-chapter