Sustained Attention in Methadone Patients

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Abstract
Sustained attention was examined in chronic, high-dose (70-120 mg) methadone patients with a modified Continuous Performance Test 45 min in duration. Working and nonworking patient groups and drug-free ex-addict and opiate-naive comparison groups were testd at high, moderate and low signal rates. Groups did not differ overall in accuracy, response latencies or commission errors. The working patients, however, performed better at the high than at the lower signal rates and had poorer accuracy and longer latencies at the low rate than did the comparison groups. The nonworking patients had different results; they made more commission errors at the high signal rate than did the other 3 groups.

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