Decoding the brain and body in motion

We developed a portable system combining wireless electroencephalography (EEG), smartphone-based motion tracking, and a wrist-worn inertial sensor to record brain activity in preparation for basketball movement outside the laboratory.
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Springer Berlin Heidelberg
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A portable solution for simultaneous human movement and mobile EEG acquisition: readiness potential for basketball free-throw shooting - Experimental Brain Research

Advances in wireless electroencephalography (EEG) technology promise to record brain-electrical activity in everyday situations. To better understand the relationship between brain activity and natural behavior, it is necessary to monitor human movement patterns. Here, we present a pocketable setup consisting of two smartphones to simultaneously capture human posture and EEG signals. We asked 26 basketball players to shoot 120 free throws each. First, we investigated whether our setup allows us to capture the readiness potential (RP) that precedes voluntary actions. Second, we investigated whether the RP differs between successful and unsuccessful free-throw attempts. The results confirmed the presence of the RP over fronto-central channels, with significant negative deflection at channel Cz, from − 400 to 0 ms before movement onset (M ± SE: − 6.54 ± 2.26 to − 13.52 ± 2.42 μV; z = − 2.53 to − 3.92; FDR-corrected p = 0.049 to 0.003; r = 0.50 to 0.77). However, the amplitude of the RP was not related to shooting success (all FDR-corrected p > 0.05; maximum mean R2 = 0.047, i.e., 4.7% explained variance). Preliminary exploratory pose analysis conducted offline indicated the presence of participant-specific variations in posture between successful and unsuccessful shots in 38.5% of participants (10/26), with 4.5% explained variance (maximum mean landmark R2 = 0.045). We conclude that a highly portable, low-cost and lightweight acquisition setup, consisting of two smartphones and a head-mounted wireless EEG amplifier, is sufficient to monitor complex human movement patterns and associated brain dynamics outside the laboratory.

Inside the brain and body during basketball movement

What happens in the brain when a basketball player prepares for a shot? This video presents the portable mobile brain/body imaging framework that we developed to simultaneously record neural and behavioral signals during natural settings, using basketball as an example.

Our setup combines two smartphones, a wireless EEG system, camera-based human pose tracking, and a wrist-worn inertial measurement unit (IMU). Together, these components allow synchronized acquisition of brain activity and whole-body movement outside the laboratory using low-cost, lightweight, and portable equipment.

In our study, 26 basketball players performed self-paced free throws while all signals were recorded simultaneously. Using these synchronized recordings, we identified the readiness potential—a slow negative EEG potential reflecting movement preparation—during a complex, natural whole-body action. The study demonstrates that meaningful neural activity can be measured reliably in realistic environments rather than only under highly controlled laboratory conditions.

This video provides a concise overview of the acquisition framework and illustrates how brain and body signals were integrated throughout the experiment. The complete, methodology, results, code, apps development, project Website, open-source resources, and additional YouTube videos are available through the links associated with the published article.

For the full story behind this work—including the motivation, challenges, and broader implications—see our accompanying Behind the Paper article on Springer Nature Research Communities.

Related publication

Contreras-Altamirano, M., Klapprott, M., Jacobsen, N., Maanen, P., Welzel, J., & Debener, S. (2026). A portable solution for simultaneous human movement and mobile EEG acquisition: readiness potential for basketball free-throw shooting. Experimental Brain Research, 244, Article 153. DOI: https://doi.org/10.1007/s00221-026-07342-6

Related links

References

  • Contreras-Altamirano et al. (2026). Experimental Brain Research.
  • Debener et al. (2012). Psychophysiology.
  • Gramann et al. (2011). Reviews in the Neurosciences.
  • Haupt et al. (2026). iScience.
  • Jacobsen et al. (2022). Frontiers in Sports and Active Living.
  • Klapprott & Debener (2024). Frontiers in Human Neuroscience.
  • Schurger et al. (2021). Trends in Cognitive Sciences.

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Life Sciences > Biological Sciences > Neuroscience
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