The only difference in both neurofeedback and biofeedback is that on the machines the neurofeedbback machines have a brain wave monitor. The process of doing them is the same.

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Neurofeedback (NFB), also called neurotherapy, neurobiofeedback or EEG biofeedback is a controversial therapy technique that presents the user with realtime feedback on brainwave activity, as measured by electrodes on the scalp, typically in the form of a video display, sound or vibration. The aim is to enable conscious control of brainwave activity. If brain activity changes in the direction desired by the therapist, a positive "reward" feedback is given to the individual, and if it regresses, either a negative feedback or no feedback is given (depending on the protocol).

Biofeedback is a form of complementary and alternative medicine (CAM) which involves measuring a subject's bodily processes such as blood pressure, heart rate, skin temperature, galvanic skin response (sweating), and muscle tension and conveying such information to him or her in real-time in order to raise his or her awareness and conscious control of the related physiological activities

The process for both is controling your body funtions to control your thoughts.

For example relaxing your muscles and and heart rate and breating rate lessons the abount of brain activity

and the more erratic your clenching and releasing muscles, heart rate and breathing rate the more activity there is in the brain.

Its just that some people prefer learning how to control their thoughts by watching a machine that monitors their brain waves (neurofeedback machines) and others prefer learning to control their thoughts by watching their heart rate and breathing rate (boifeedback machines)

Still others like me can't afford the expensive machines so instead of a visual aid like machines I was taught to put my hand on my heart or pulse spot while doing relaxation visualizations to slow my breathing and heart rate in times of panic.

Anything that focuses on learning to control thoughts and body rates is using biolfeedback and neurofeedback.

and the process of doing both is the same- relaxing and controling thoughts and body funtions.

the difference is what the person is focusing on to learn to control their thoughts and body funtions - their brain waves or heart rate, breathing and muscle reactions.