Fig. 5: MTL theta band power is modulated by position relative to environmental boundaries.
From: Dynamic neural representations of memory and space during human ambulatory navigation
a, b Analysis performed over arrow trials, excluding the 0.5 m leading up to arrival at arrows. a Mean (±s.e.m.) normalized (norm’d) difference in power across frequencies (3–120 Hz) and MTL channels (nchannels = 19) between positions near (<1.2 m of walls, based on prior work17) versus away from boundaries. Significant differences in norm’d power in boundary compared to inner positions occurs for theta frequencies (4–6 Hz, horizontal pink bar = p < 0.05, corrected using false discovery rate [FDR]). b Mean ± s.e.m. norm’d theta band power (4–6 Hz) across MTL channels (nchannels = 19) for boundary and inner positions (p < 0.0001, two-sided pairwise permutation test). Crosses (+) represent individual channels with colors corresponding to individual participants. *** = p < 0.001. c Top-down view of norm’d theta (4–6 Hz) band power in an example channel for data across the entire task, excluding the 0.5 m leading up to arrival at arrows. Source data are provided as a Source Data file.
