Brain-Machine Interfaces (BMIs), also known as Brain-Computer Interfaces (BCIs), are innovative technologies that establish a direct communication pathway between the human brain and external devices or machines. BMIs facilitate bidirectional information exchange, enabling users to control external devices using their neural activity while also providing sensory feedback from the devices back to the brain. The primary goal of BMIs is to bridge the gap between the nervous system and the external world, allowing individuals with motor impairments or communication disabilities to interact with and control various devices through their brain signals. Here's an in-depth explanation of the concept of BMIs and their crucial role in connecting the nervous system to external devices:
1. Neural Signal Recording:
The core function of BMIs involves recording neural signals from the brain. This is typically achieved using non-invasive or invasive methods. Non-invasive techniques include electroencephalography (EEG) and functional near-infrared spectroscopy (fNIRS), which detect electrical or optical signals, respectively, on the scalp. Invasive methods involve implanting microelectrode arrays directly into the brain tissue t....
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