biofeedback
UK[ˌbaɪəʊˈfiːdbæk]US[ˌbaɪoʊˈfiːdbæk]
n
A technique for learning to control bodily functions (such as heart rate or blood pressure) by using monitoring devices to provide information about the body's responses.
Morpheme Breakdown
bio
feedback
bio
life
feedback
returned information
Etymology
The term 'biofeedback' is a modern scientific compound, coined in the late 1960s. It ingeniously merges the Greek-derived prefix 'bio-', pertaining to life and living systems, with the English engineering term 'feedback', which describes the process where a system's output is returned as input to regulate its performance. The conceptual logic is direct: biological data from the body (such as brainwaves or muscle tension) is measured and 'fed back' to the individual in real time, typically via visual or auditory signals. This allows the person to consciously perceive and, through practice, learn to control these normally involuntary physiological processes, creating a bridge between ancient Greek concepts of life and 20th-century cybernetic principles of information control.
Analysis
Structure: bio (life) + feedback (returned information)
- bio: From Greek 'bios', meaning 'life'. In this compound, it functions as a combining form indicating a relation to living organisms or biological processes.
- feedback: A compound word from English 'feed' (to supply) and 'back' (in return). It functions as a noun meaning information about a result returned to the source for self-regulation.
Examples
Biofeedback therapy can be effective in managing chronic headaches and anxiety.
The patient learned to lower her heart rate using a simple biofeedback device.
Researchers are studying the efficacy of neurofeedback, a type of biofeedback focused on brain activity.