in a brain-to-computer interface electrodes are used to collect what from the brain?

Question

can anyone help me with this???

Answer 1

Pretty much all electrodes serve as receptors for electrical current. If you're talking about some of the interfaces built by implanting wires into the brains of monkeys and a few humans, then this is no exception.

On the other hand, for some devices (such as an EEG and non-invasive neural interfaces) the electrodes sit on the scalp and instead of directly reading a current, detect the charge moving in the brain through the magnetic fields such currents generate. The field induces a current in the electrode, which brings us back to the more typical definition of the device.

And, of course, the MOST typical interface in use is a computer screen, keyboard, and mouse. None of these have parts that are typically called electrodes, but if someone wanted to make an interesting point they might refer to some of the metallic plugs as such.

So, depending on the specific kind of device you're talking about, the answer is either a direct current, an induced current, or some kind of satirical reference to a normal wire.

Answer 2

The system you are describing is called bio-feedback. Here is an example: A patient with a lost arm, receiving a new motorized prosthetic. The sensors in the prosthetic detect the electrical impulses in the remain living muscle. A technician asks the patient to try and make a certain kind of movement with the missing limb (the brain never forgets how), and tells a computer what kind of movement correlates to the detected impulses. Afterward, when the computer detects a signal in the bicep, it knows the 'flex' the arm.

The same is true for using the brain. A technician tells the patient to make the on-screen cursor move up. The computer detects what electrical impulse coincides with the desired movement, and moves the cursor. After training, the patient can gain control of many different types of movement. The most accurate sensors, I believe, are implanted, but research is also conducted using scalp sensors. Bi-feedback requires a lot of training to use, for both the patient and the computer. To answer your question more specifically, the sensor just detects an eletrical impulse, but doesn't diferentiate between a signal to move an arm, or blink your eyelid. It just records a signal, 'learns' that it means move up, and listens for it again.

Answer 3

You brain has a few different types of waves: delta, theta, alpha, beta, and/or gamma depending if you're old-school or not. But basically 1) the electrical activity in the brain 2) the frequencies 3) and the location of the frequencies

Answer 4

on account that scientists now have all long gone mad and have faith we live interior a working laptop or workstation generated digital international besides; i think of you would be maximum well known a thank you to the destiny. it relatively is a large progression for you. once you're saying unfastened women persons, i assume you do no longer propose the type that have bits drop off?

Answer 5

electrical impulses