idw – Informationsdienst Wissenschaft

Nachrichten, Termine, Experten

Grafik: idw-Logo
Science Video Project
idw-Abo

idw-News App:

AppStore

Google Play Store



Instance:
Share on: 
10/29/2018 15:19

Predicting the future

Marilena Hoff Presse- und Öffentlichkeitsarbeit
Max-Planck-Institut für empirische Ästhetik

    Previous theories on temporal processes in the human brain need to be revised

    In a joint opinion paper, researchers from the Max Planck Institute for Empirical Aesthetics, the Aix-Marseille Université, New York University and the University of Geneva call for the revision of previous theories on neuronal mechanisms of the temporal processing of music and language. They present a theoretical approach that comprehensively integrates the interaction of different brain regions into previous processing models. For the first time, this approach makes it possible to explain both periodic and aperiodic temporal predictions.

    The recognition of time structures and the prediction of a signal are basic abilities of the human brain. They are even more essential for the understanding of speech or the processing of music that goes beyond pure hearing. Previous research has focused primarily on the neuronal mechanisms that allow us to process periodic signals and make temporal predictions based on these signals. So far, it has been assumed that this happens through neuronal oscillations, which follow a repeating acoustic signal.

    Current research results show that the human brain is also able to make aperiodic, i.e. not regular, temporal predictions. This fact can only be insufficiently explained by the oscillation theory alone. Using aperiodic predictions, the brain is able, for example, to estimate the course of a movement or to assess the dynamics of a conversation. This suggests that aperiodic processes are no less important for orientation in everyday life than periodic processes and therefore - supported by a well-founded theoretical model - should be thoroughly researched.

    Previous models were based on the assumption of different mechanisms for periodic and aperiodic predictions: Stimulus-driven, i.e. oscillations follow a signal, and a mechanism guided by our memory. In contrast, current research shows that neuronal oscillations in the brain are influenced by superordinate processing steps that also include aperiodic processes, whereby several brain areas are active. "It is likely that a uniform mechanism based on neuronal oscillations, but not purely stimulus-driven controls temporal predictions in the brain," explains lead author Johanna Rimmele of the Max Planck Institute for Empirical Aesthetics. "Oscillations still seem to play a central role in neuronal processing - however, temporal predictions can only be comprehensively explained by a more complex examination of several corresponding brain areas," continues the neuroscientist.

    The opinion paper concludes with open questions about possible research approaches based on the model. The aim must be to further refine the new findings on a theoretical level and to underpin them experimentally.


    Contact for scientific information:

    Dr. Johanna M. Rimmele
    Tel.: +49 69 8300 479 323
    johanna.rimmele@ae.mpg.de


    Original publication:

    Rimmele, J. M., Morillon, B., Poeppel, D., & Arnal, L. H. (2018). Proactive sensing of periodic and aperiodic auditory patterns. Trends in Cognitive Sciences. https://doi.org/10.1016/j.tics.2018.08.003


    Images

    Predicting the future
    Predicting the future

    None


    Criteria of this press release:
    Journalists, Scientists and scholars, Students
    Language / literature, Medicine, Music / theatre
    transregional, national
    Research results, Scientific Publications
    English


     

    Predicting the future


    For download

    x

    Help

    Search / advanced search of the idw archives
    Combination of search terms

    You can combine search terms with and, or and/or not, e.g. Philo not logy.

    Brackets

    You can use brackets to separate combinations from each other, e.g. (Philo not logy) or (Psycho and logy).

    Phrases

    Coherent groups of words will be located as complete phrases if you put them into quotation marks, e.g. “Federal Republic of Germany”.

    Selection criteria

    You can also use the advanced search without entering search terms. It will then follow the criteria you have selected (e.g. country or subject area).

    If you have not selected any criteria in a given category, the entire category will be searched (e.g. all subject areas or all countries).