C. W. N. M. stands for "Cognitive Workload and Neurophysiological Measurement." It refers to the study of how cognitive workload affects brain activity and performance. Researchers use various techniques to measure neurophysiological responses, such as EEG (electroencephalography) and fMRI (functional magnetic resonance imaging), to understand how mental tasks impact cognitive load. This field is important in areas like human-computer interaction and ergonomics, where understanding cognitive workload can lead to better design of systems and tools. By analyzing how the brain responds to different tasks, researchers aim to improve efficiency and reduce stress in work environments.