Monitoring information processing efficiency after stroke or head injury: A comparison of four computerised tests for use in single case experiments

Abstract

Single case experiments on cognitive rehabilitation can only be valid if adequate methods of monitoring cognitive change are developed. The sensitivity and reliability of four computer-based tests of information processing efficiency (continuous choice reaction time, visual tracking, memory for pairs, and critical flicker fusion) were compared. Performance of 16 left hemisphere stroke patients and 17 patients with severe closed head injury was compared with age-matched controls. The reaction time task proved the most useful in detecting effects of brain damage in both groups and showing good test-retest reliability.