Decoupling tremor and volitional force control factors in analyses of motor task performance
A frequency domain filtering protocol is described for separating force contributions from tremor and fine motor control when both factors are present during performance of a goal-oriented task. This method partitions the frequency domain after Fourier transformation of time series data. Amplitudes within a range are divided by or substituted with analogous values from a defined task function to obtain representations of the contribution of a particular factor or that remaining in the absence of the factor. Filtered data can then be used for independent characterization of each factor with respect to frequency power spectra or time series properties.
decoupling tremor motor control force regulation