Journal: Frontiers in Neuroscience
Article Title: Muscle responses to limb block during spontaneous movements in infants
doi: 10.3389/fnins.2025.1657677
Figure Lengend Snippet: Experimental procedure and analyses. (A) Experimental setup for different limb block conditions in full-term and preterm infants: arm, leg, ipsilateral arm-leg, and contralateral arm-leg block. We analyzed the time intervals spanning 2 s before and after limb block ( t = B) or release ( t = R). (B) The schematic diagram illustrates the assessment of neural pathway functioning and sensorimotor responses to limb block during spontaneous limb movements. Three analytical approaches (lower panels) were used to evaluate EMG patterns following limb block (and release): changes in mean EMG activity, intrinsic rhythmicity of the neural drive (neural power spectra), and agonist–antagonist coactivation. These analyses were conducted within a 2-s pre- and post-block time window.
Article Snippet: EMG activity was recorded bilaterally using the Trigno Wireless System (Delsys Inc., bandwidth 20–450 Hz, overall gain 1,000, sampling rate 963 Hz) from the following muscles: biceps brachii (BB), triceps brachii (TB), rectus femoris (RF), biceps femoris (BF), tibialis anterior (TA), and gastrocnemius lateralis (LG).
Techniques: Blocking Assay, Activity Assay