Table 2.

Group averaged binary classification accuracy along the task-relevant dimension

Left hemisphereBilateralRight hemisphere
STCVoiceSTC − VoiceSTCVoiceSTC − VoiceSTCVoiceSTC − Voice
Speaker task
    Boy–girl0.53 (0.02)0.51 (0.01)0.54* (0.02)0.52 (0.01)0.50 (0.02)0.51 (0.01)0.50 (0.02)0.48 (0.01)0.49 (0.02)
    Boy–male0.58*** (0.03)0.56* (0.03)0.55 (0.03)0.61*** (0.02)0.57* (0.03)0.57* (0.03)0.60** (0.03)0.59*** (0.02)0.58*** (0.02)
    Girl–male0.62*** (0.02)0.58*** (0.02)0.59** (0.03)0.64*** (0.04)0.63*** (0.03)0.59* (0.03)0.62** (0.04)0.61*** (0.03)0.57* (0.03)
Vowel task
    /a/–/i/0.52 (0.02)0.50 (0.02)0.53 (0.03)0.53 (0.02)0.50 (0.02)
    /a/–/u/0.56* (0.03)0.52 (0.03)0.59*** (0.02)0.57* (0.03)0.57* (0.02)
    /i/–/u/0.56** (0.02)0.54** (0.01)0.52 (0.02)0.50 (0.02)0.53 (0.02)
  • Mean (SE) classification accuracy for binary speaker/vowel comparisons in the speaker/vowel task. Accuracy is shown for each of the ROIs showing significant three-way classification (Figs. 5A, 6). STC: sound responsive superior temporal cortex, Voice: voice localizer.

  • *p < 0.05,

  • **p < 0.01,

  • ***p < 0.005.