Prediction of arm trajectory from a small number of neuron activities in the primary motor cortex

Yasuharu Koike, Hideaki Hirose, Yoshio Sakurai, Toshio Iijima

    Research output: Contribution to journalArticle

    36 Citations (Scopus)

    Abstract

    Monkey arm movement was reconstructed from neuron activities recorded in the primary motor cortex (Ml). We recorded single neuron activities from a monkey's Ml, while the animal performed an arm reaching task. We also recorded electromyographic (EMG) activity and movement trajectories during the task. First, we reconstructed the EMG signals from the neuron activities. The EMG signals were reliably reconstructed with a linear summation of the neuron activities. Next, we reconstructed joint angles from the reconstructed EMG signals with an artificial neural network model. The reconstructed trajectories of the hand position and elbow position showed good correlation with the actual arm movement. This model appropriately reflected the anatomical characteristics.

    Original languageEnglish
    Pages (from-to)146-153
    Number of pages8
    JournalNeuroscience Research
    Volume55
    Issue number2
    DOIs
    Publication statusPublished - 2006 Jun 1

    Keywords

    • BMI
    • EMG
    • Ml
    • Neuron activity
    • Reaching movement

    ASJC Scopus subject areas

    • Neuroscience(all)

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