Photobiomodulation on Stress

Abstract EN

Photobiomodulation (PBM) is a nondamaged modulation of laser irradiation or monochromatic light (LI) on a biosystem function.

It depends on whether the function is in its function-specific homeostasis (FSH).

An FSH is a negative-feedback response of a biosystem to maintain the function-specific conditions inside the biosystem so that the function is perfectly performed.

A function in its FSH is called a normal function.

A function far from its FSH is called a dysfunctional function.

The process of a function from dysfunctional to normal is called a functional normalization.

For a normal function in its FSH, there are FSH-essential subfunctions (FESs), FSH-nonessential subfunctions (FNSs), and an FES/FNS-specific homeostasis (FESH/FNSH).

A FSH can resist internal/external disturbances under the threshold, but can be disrupted by an FSH-specific stress (FSS).

A normal/dysfunctional FSS is called a successful/chronic stress.

An FESH/FNSH-specific stress was called an extraordinary/ordinary stress.

A low level LI (LLL) cannot directly affect a normal function, but can modulate a chronic stress.

A normal function may have a chronic ordinary stress, and an LLL may modulate the chronic ordinary stress so that it promotes the normalization of the dysfunctional FNS and then upgrades the normal function.

A high level LI can modulate a normal function and may be a successful stress.