Fig. 5.

Relationship between left insula activation and standardized Chinese test score in individual subjects. Volunteers shown in black are those whose subjective ratings of home language usage were between 3 and 5. The rating scale had a range from 1 to 7 (1, Chinese only; 2, mainly Chinese, English rarely; 3, mostly Chinese, with English used at least 25% of the time; 4, equal use of English and Chinese; 5, mostly English, with Chinese used at least 25% of the time; 6, mainly English, Chinese rarely; 7, English only).