Music : from shiver to functionnal cerebral processes and rehabilitation ?
Prof Pierre-Alain JOSEPHa, Dr Bertrand GLIZEa, Dr Mélanie COGNÉa, Prof Pierre BURBAUDb
a CHU Bordeaux - Service de Médecine Physique et Réadaptation, EA 4136 Université Bordeaux, b Service d’Explorations Fonctionnelles du Système Nerveux Institut des maladies neurodégénératives CNRS UMR 5293 Université Bordeaux
Music is a multifaceted psychologic phenomenon and we experience music's propensity to trigger memories, movements, and emotions. Input through auditory system is a temporal processing “expert” in the brain, and allows relationships between communication, cognition and sensorimotor processes. Inverse models hold an important role in sound perception as well, as they allow to predict and simulate the physical aspects of motion and space implied in the music. Forward internal models represent an information flow from action to perception, in the sense that they allow the prediction of the likely sensory outcome of a planned or executed action (HerholzSCet al.2012). Furthermore sound involvement in action, cognitive studies showed that musicians present augmented ability in different forms of visual attention (Rodrigues AC et al 2013) and various cognitive processes. So music and sound stimuli supplies an excellent framework to study the effects of universus multimodal approaches. Humans are extremely good at detecting anomalies in sensory input. Several studies have shown that motor dysfunction leads to considerable changes in individuals’ perception and recognition of auditory and musical features. In a restorative approach, many studies have suggested that structural and functional cerebral neuroplastic processes result from musical training. Auditory experience, through modulation and amplification of associated stimuli, and software-based training affect affects functional abilities.
We investigated how contextual and non-contextual auditory stimuli influence the performance of brain-injured patients in a navigational task (VAPS virtual supermarket).Patients’ responses to auditory stimuli are heterogeneous, which is consistent with the complexity of processes involved in navigation. Results suggest that additional stimuli may be helpful in the neurorehabilitation of brain dammaged patients with executive disorders. Patients with localization deficit or auditory neglect still benefited from auditory contextual cues. A greater knowledge of these processes may allow selecting patients for whom rehabilitation with auditory stimuli would be helpful and defining appropriate training.
Herholz SC, Zatorre RJ. Musical training as a framework for brain plasticity: behavior, function, and structure. Neuron. 2012 Nov 8;76(3):486-502.
Rodrigues AC, Loureiro MA, Caramelli P. Long-term musical training may improve different forms of visual attention ability. Brain Cogn. 2013 Aug;82(3):229-35.