Effects of parietal TMS on somatosensory judgments challenge interhemispheric rivalry accounts

▶ TMS to right parietal cortex improves ipsilateral somatosensory detection. ▶ The same TMS bursts impair bilateral somatosensory discrimination. ▶ The results argue against interhemispheric rivalry. ▶ A possible explanatory model includes excitatory interhemispheric interactions.