Computerized assessment of cognitive impairment among children undergoing radiation therapy for medulloblastoma

Andrew M. Heitzer, Jason M. Ashford, Brian T. Harel, Adrian Schembri, Michelle A. Swain, Joanna Wallace, Kirsten K. Ness, Fang Wang, Hui Zhang, Thomas E. Merchant, Giles W. Robinson, Amar Gajjar, Heather M. Conklin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Purpose: Advantages to computerized cognitive assessment include increased precision of response time measurement and greater availability of alternate forms. Cogstate is a computerized cognitive battery developed to monitor attention, memory, and processing speed. Although the literature suggests the domains assessed by Cogstate are areas of deficit in children undergoing treatment for medulloblastoma, the validity of Cogstate in this population has not been previously investigated. Methods: Children participating in an ongoing prospective trial of risk-adapted therapy for newly diagnosed medulloblastoma (n = 73; mean age at baseline = 12.1 years) were administered Cogstate at baseline (after surgery, prior to adjuvant therapy) and 3 months later (6 weeks after completion of radiation therapy). Gold-standard neuropsychological measures of similar functions were administered at baseline. Results: Linear mixed models revealed performance within age expectations at baseline across Cogstate tasks. Following radiation therapy, there was a decline in performance on Cogstate measures of reaction time (Identification and One Back). Females exhibited slower reaction time on One Back and Detection tasks at baseline. Higher-dose radiation therapy and younger age were associated with greater declines in performance. Pearson correlations revealed small-to-moderate correlations between Cogstate reaction time and working memory tasks with well-validated neuropsychological measures. Conclusions: Cogstate is sensitive to acute cognitive effects experienced by some children with medulloblastoma and demonstrates associations with clinical predictors established in the literature. Correlations with neuropsychological measures of similar constructs offer additional evidence of validity. The findings provide support for the utility of Cogstate in monitoring acute cognitive effects in pediatric cancer.

Original languageEnglish (US)
Pages (from-to)403-411
Number of pages9
JournalJournal of Neuro-Oncology
Issue number2
StatePublished - Jan 30 2019


  • Brain tumor
  • Cogstate
  • Medulloblastoma
  • Neuropsychology
  • Pediatric

ASJC Scopus subject areas

  • Oncology
  • Neurology
  • Clinical Neurology
  • Cancer Research

Fingerprint Dive into the research topics of 'Computerized assessment of cognitive impairment among children undergoing radiation therapy for medulloblastoma'. Together they form a unique fingerprint.

Cite this