Force measurement method, force measurement device, force measurement system, force measurement program, and recording medium

A force measurement device, comprising:

• a first acquisition unit configured to acquire first data indicating a temporal change of a position of cargo during a period in which the displacement of the cargo per unit time is substantially constant among data included in time course data indicating a movement trajectory of the cargo acquired in a non-invasive manner;
• a fluctuation value calculation unit configured to calculate, based on a first probability distribution indicating a distribution of a probability that the amount of change at a predetermined position of the cargo per unit time is a predetermined amount, which is a probability distribution based on the first data, a fluctuation value proportional to a force applied to the cargo by motor proteins that transport the cargo;
• and
• a force calculation unit configured to calculate the force based on the calculated fluctuation value.

A non-transitory computer readable recording medium storing a program causing a computer to:

• acquire first data indicating a temporal change of a position of cargo during a period in which the displacement of the cargo per unit time is substantially constant among data included in time course data indicating a movement trajectory of the cargo acquired in a non-invasive manner;
• calculate, based on a first probability distribution indicating a distribution of a probability that the amount of change at a predetermined position of the cargo per unit time is a predetermined amount, which is a probability distribution based on the first data, a fluctuation value proportional to a force applied to the cargo by motor proteins that transport the cargo;
• and
• calculate the force based on the calculated fluctuation value.