Neuroscience-informed auditory training in schizophrenia: A final report of the effects on cognition and serum brain-derived neurotrophic factor

Melissa Fisher, Synthia H. Mellon, Owen Wolkowitz, Sophia Vinogradov

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Objective: We previously reported the interim effects in a per protocol analysis of a randomized controlled trial of an innovative neuroscience-informed computerized cognitive training approach in schizophrenia. Here we report the effects of training on behavioral outcome measures in our final sample using an intent-to-treat analysis. We also report the effects on serum brain-derived neurotrophic factor (BDNF). Method: Eighty-seven clinically stable participants with schizophrenia were randomly assigned to either targeted auditory training (AT, N=46) or a computer games control condition (CG, N=41). Participants were assessed on neurocognition, symptoms and functional outcome at baseline and after 50 hours of intervention delivered over 10 weeks. Serum BDNF was assessed at baseline, at 2 weeks, and at 10 weeks. Results: After the intervention, AT participants showed significant gains in global cognition, speed of processing, verbal learning, and verbal memory, relative to CG participants, with no changes in symptoms or functioning. At baseline, schizophrenia participants had significantly lower-than-normal serum BDNF. AT participants showed a significant increase in serum BDNF compared to CG participants, and "normalized" levels by post training. Conclusions: Participants with chronic schizophrenia made significant cognitive gains after 50 hours of intensive computerized training delivered as a stand-alone treatment, but no improvement in symptoms or functioning. Serum BDNF levels were significantly increased, and may serve as a peripheral biomarker for the effects of training. Future research must focus on: 1) Methods of integrating cognitive training with psychosocial treatments; 2) A deeper understanding of underlying neurophysiology in order to enhance critical mechanisms of action.

Original languageEnglish (US)
Pages (from-to)1-7
Number of pages7
JournalSchizophrenia Research: Cognition
Volume3
DOIs
StatePublished - Mar 1 2016

Bibliographical note

Funding Information:
The work reported here was supported by NIMH grant MH-068725 , MH-68725-02 , NIMH Small Business Technology Transfer grant R42 MH-073358 , NIH/National Center for Research Resources University of California, San Francisco-Clinical Translational Science Institute grant UL1 RR024131 , and the San Francisco VA Medical Center . Software was provided by Posit Science Corporation free of charge.

Publisher Copyright:
© 2016.

Keywords

  • BDNF
  • Cognitive remediation
  • Neuroplasticity
  • Schizophrenia

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