Characteristic profiles of high gamma activity and blood oxygenation level-dependent responses in various language areas

► We compared high gamma activity (HGA) and BOLD responses with a language task. ► There was a positive correlation between HGA and BOLD in multiple language areas. ► The temporal language area, however, showed spatial dissociation of HGA and BOLD. ► HGA in the temporal lobe quickly declined, whereas the frontal HGA lasted longer. ► This study explains why language-fMRI hardly detects BOLD in the temporal lobe.