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Related Experiment Video

Updated: Apr 26, 2026

Resting-State Connectivity and Neuroimaging of Prefrontal Cortex Activity During a Block-Design Yoga Asana Practice Using fNIRS
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Posture alters human resting-state.

Robert T Thibault1, Michael Lifshitz1, Jennifer M Jones1

  • 1McGill University, 3775 University, Montreal, QC, H3A 2B4, Canada.

Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
|July 22, 2014
PubMed
Summary
This summary is machine-generated.

Posture significantly impacts brain activity. Lying down for neuroimaging (like fMRI) alters brain dynamics compared to upright positions, affecting research findings.

Keywords:
EEGNeuroimagingPostureSupine positionfMRI

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Neuroimaging

Background:

  • Neuroimaging studies often require participants to lie supine, contrasting with typical upright postures during cognitive tasks.
  • The effect of posture on brain activity and neuroimaging data is under-investigated.

Purpose of the Study:

  • To investigate the direct impact of different orthostatic conditions on spontaneous brain dynamics.
  • To assess how posture influences electroencephalographic (EEG) activity.

Main Methods:

  • Electroencephalography (EEG) was used to record brain activity.
  • Participants were tested in four postural conditions: lying supine, inclined at 45°, sitting upright, and standing erect.

Main Results:

  • Upright postures (sitting and standing) showed increased widespread high-frequency oscillatory activity compared to the supine position.
  • Posture was identified as a significant factor influencing brain dynamics.

Conclusions:

  • Postural differences between neuroimaging environments and naturalistic cognition can affect brain activity.
  • Researchers should consider the influence of posture when interpreting neuroimaging results, particularly from supine-based techniques like fMRI.