Preliminaries to a Psychological Model of Musical Groove

Introduction. Rhythmic auditory stimulation (RAS) has successfully helped regulate gait for people with Parkinson’s disease. However, the way in which different auditory cues and types of movements affect entrainment, synchronization, and pacing stability has not been directly compared in different aged people with and without Parkinson’s. Therefore, this study compared music and metronomes (cue types) in finger tapping, toe tapping, and stepping on the spot tasks to explore the potential of RAS training for general use. Methods. Participants (aged 18–78 years) included people with Parkinson’s (n = 30, Hoehn and Yahr mean = 1.78), older (n = 26), and younger adult controls (n = 36), as age may effect motor timing. Timed motor production was assessed using an extended synchronization-continuation task in cue type and movement conditions for slow, medium, and fast tempi (81, 116, and 140 mean beats per minute, respectively). Results. Analyses revealed main effects of cue and movement type but no between-group interactions, suggesting no differences in motor timing between people with Parkinson’s and controls. Music supported entrainment better than metronomes in medium and fast tempi, and stepping on the spot enabled better entrainment and less asynchrony, as well as more stable pacing compared to tapping in medium and fast tempi. Age was not confirmed as a factor, and no differences were observed in slow tempo. Conclusion. This is the first study to directly compare how different external auditory cues and movement types affect motor timing. The music and the stepping enabled participants to maintain entrainment once the external pacing cue ceased, suggesting endogenous mechanisms continued to regulate the movements. The superior performance of stepping on the spot suggests embodied entrainment can occur during continuous movement, and this may be related to emergent timing in tempi above 600 ms. These findings can be applied therapeutically to manage and improve adaptive behaviours for people with Parkinson’s.

Spontaneous motor tempo (SMT), observed in walking, tapping and clapping, tends to occur around 2 Hz. Initiating and controlling movement can be difficult for people with Parkinson's (PWP), but studies have not identified whether PWP differ from controls in SMT. For community-based interventions, e.g. dancing, it would be helpful to know a baseline SMT to optimize the tempi of cued activities. Therefore, this study compared finger tapping (FT), toe tapping (TT) and stepping 'on the spot' (SS) in PWP and two groups of healthy controls [age-matched controls (AMC) and young healthy controls (YHC)], as SMT is known to change with age. Participants (PWP; n = 30, AMC; n = 23, YHC; n = 35) were asked to tap or step on the spot at a natural pace for two trials lasting 40 seconds. The central 30 seconds were averaged for analyses using mean inter-onset intervals (IOI) and coefficient of variation (CoV) to measure rate and variability respectively. PWP had faster SMT than both control groups, depending on the movement modality: FT, F(2, 87) = 7.92, p < 0.01 (PWP faster than YHC); TT, F(2, 87) = 4.89, p = 0.01 (PWP faster than AMC); and SS, F(2, 77) = 3.26, p = 0.04 (PWP faster than AMC). PWP had higher CoV (more variable tapping) than AMC in FT only, F(2, 87) = 4.10, p = 0.02. This study provides the first direct comparison of SMT between PWP and two control groups for different types of movements. suggest SMT is generally faster in PWP than control groups, and more variable when measured with finger tapping compared to stepping on the spot.

This study investigated the effects of musical instrument learning on the concomitant development of cognitive, behavioural and socio-emotional skills in 38 seven- to nine-year-old children. Pre- and post-test measures of intelligence, memory, socio-emotional behaviour, motor ability and visual-motor integration were compared in children who received either extra-curricular musical training (EMT: n = 19) or statutory school music group lessons (SSM: n = 19). Results showed a significant association between musical aptitude and intelligence overall. The EMT group showed a significant increase in IQ (7 points), in comparison to 4.3 points for the SSM group, suggesting an effect of musical learning on intelligence. No effects were found for memory, or for visual motor integration or socio-emotional behaviour. However, significant improvements in gross motor ability where revealed for the EMT group only, for the aiming and catching composite. With regard to the measure of fluid intelligence, these findings support previous studies. The novel use of the Movement Assessment Battery for Children provides evidence that musical learning may support development in a child’s ability to judge distance, consider velocity, focus and use their proprioceptive, interoceptive and exteroceptive nervous systems.

In music psychology, the experience of wanting to move in response to music is commonly known as feeling the groove. According to the psychological model of musical groove by Senn et al., the causes for the urge to move are linked to the properties of the music itself, to the personal background of the listener, to the listening situation, and to feedback loops between body movement and cognition. The model formulates eight hypotheses stating that the music affects a listener's urge to move mediated through a variety of cognitive processes. This study develops a method based on structural equation modeling (SEM) to empirically test the model hypotheses. It evaluates five of the model hypotheses using data from an online listening experiment with 135 participants and 16 stylistically diverse musical stimuli (n = 2,160 observations). The SEM model had a good fit with the data (CFI = 0.958, RMSEA = 0.051) and explained a large proportion of the variance in the latent urge to move variable (R² = .737). Results show that music affects the urge to move mediated through listeners' experiences of energetic arousal, listening pleasure, and temporal regularity. The stimuli themselves showed direct effects on the urge to move that were not mediated through the hypothesized mediation pathways. This suggests that the model is incomplete. The current study demonstrates that the mediation structure of the psychological groove model can successfully be implemented using an SEM approach. The methodology may be adapted to investigate different repertoires, populations, and hypotheses in the future. (PsycInfo Database Record (c) 2023 APA, all rights reserved).