A brain-computer interface (BCI) is a technology that connects the human brain directly to a computer or other devices. This allows people to control machines using their thoughts, bypassing the need for physical movement. BCIs can help individuals with disabilities communicate or control prosthetic limbs, making everyday tasks easier and improving their quality of life. These interfaces work by detecting brain signals, often through sensors placed on the scalp. The signals are then translated into commands that the computer can understand. Researchers are continually exploring new ways to enhance BCIs, aiming to create more effective and user-friendly systems for various applications, including gaming and medical treatments.