Worse than expected: A z-curve reanalysis of motor cortex stimulation studies of embodied language comprehension

Dozens of TMS and tDCS studies suggest a functional involvement of motor cortex in action language comprehension, supporting the embodied cognition view. In a recent study (Solana & Santiago, 2022, Neurosci. Biobehav. Rev., 141, 104834), we evaluated the soundness of this literature by means of p-curve analyses and tests for excess significance. The analysis estimated a low average power (≈ 30%) and showed signs of publication bias, which led us [...]

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