What are common applications of BCI technology?

• A. Weather forecasting and satellite communications
• B. Communication (spellers), computer interface control, and playing games
• C. Medical imaging and tissue analysis
• D. Navigation and robotics control in autonomous vehicles

Answer: (B)

BCI technology translates brain activity into commands that can control devices directly. The most common uses are assisting communication for people who cannot speak or move, where brain signals operate text-entry systems or “spellers.” It also includes control of computer interfaces and assistive devices, such as steering a cursor, selecting items, or controlling a wheelchair or prosthetic limb using brain signals. Games and neurofeedback are other prominent applications, providing interactive control for entertainment or training/rehabilitation.

The other options don’t fit typical BCI practice: weather forecasting and satellite communications are meteorology/telecommunications tasks, medical imaging and tissue analysis are imaging/biomedical techniques, and navigation or autonomous-vehicle control relies on sensors and traditional control systems rather than brain–computer interfaces.