Dynamic Systems Approach in Sensorimotor Synchronization: Adaptation to Tempo Step-Change
| Autor: | U. Peter Svensson, Nima Darabi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
pole/zero systems
rhythmic perception Physiology Computer science Metronome frequency domain Transfer function 050105 experimental psychology Synchronization law.invention 03 medical and health sciences Step response sensorimotor synchronization period correction 0302 clinical medicine law Physiology (medical) QP1-981 0501 psychology and cognitive sciences Psychoacoustics Original Research system identification tempo step-change 05 social sciences Linear system System identification Root locus root locus analysis Algorithm 030217 neurology & neurosurgery |
| Zdroj: | Frontiers in Physiology Frontiers in Physiology, Vol 12 (2021) |
| Popis: | This paper presents a dynamic systems model of a sensorimotor synchronization (SMS) task. An SMS task typically gives temporally discrete human responses to some temporally discrete stimuli. Here, a dynamic systems modeling approach is applied after converting the discrete events to regularly sampled time signals. To collect data for model parameter fitting, a previously published pilot study was expanded. Three human participants took part in an experiment: to tap a finger on a keyboard, following a metronome which changed tempo in steps. System identification was used to estimate the transfer function that represented the relationship between the stimulus and and the step response signals, assuming a separate linear, time-invariant system for each tempo step. Different versions of model complexity were investigated. As a minimum, a second-order linear system with delay, two poles, and one zero was needed to model the most important features of the tempo step response by humans, while an additional third pole could give a somewhat better fit to the response data. The modeling results revealed the behavior of the system in two distinct regimes: tempo steps below and above the conscious awareness of tempo change, i.e., around 12% of the base tempo. For the tempo steps above this value, model parameters were derived as linear functions of step size for the group of three participants. The results were interpreted in the light of known facts from other fields like sensorimotor synchronization, psychoacoustics and behavioral neuroscience. |
| Databáze: | OpenAIRE |
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