Table 2.

Summary of the specific functional domains affected by each of the two lead exposure regimens and the efficacy of succimer chelation in alleviating the dysfunction

Domain of function	Mod Pb		High Pb
	Pb effect?	Succ. benefit?	Pb effect?	Succ. benefit?
Impaired learning ability	Yes	Yes	Yes	No
Impaired regulation of arousal and/or negative emotion	No	NA	Yes	Yes
Greater disruption following an error
Attentional dysfunction
Sustained attention/error reactivity	No	NA	Yes	Yes
Lapses in attention	No	NA	Yes	Intermediate
Impaired inhibitory control	No	NA	Yes	No
Impulsivity

Data from Stangle et al. [20]. [Reproduced with permission from Environmental Health Perspectives]

Pb effect? denotes whether a statistically significant effect of lead was detected, Succ. benefit? indicates whether succimer was efficacious at alleviating the lead induced dysfunction, NA not applicable