Clonazepam Effects on Brain Oscillations and Cognition in Schizophrenia

Summary

Cognitive deficits are some of the most prominent and disabling symptoms of schizophrenia. Evidence suggests that schizophrenia involves alterations to the functioning of a neural system under the control of a brain chemical called GABA. The present project will compare the effects of low-dose clonazepam (at a sub-sedating dose) to placebo, for effects on GABA- modulated brain activity measured by EEG, and associated cognitive processes in people who have schizophrenia.

Timeline

Start

2016-10

Primary completion

2017-10

Completion

2017-10

Outcome

Outcome not reported

Stopped: “Delays in equipment procurement prevented the start of the study in time”

Publications

• Background Bowie CR, Harvey PD. Cognition in schizophrenia: impairments, determinants, and functional importance. Psychiatr Clin North Am. 2005 Sep;28(3):613-33, 626. doi: 10.1016/j.psc.2005.05.004.
• Background Minzenberg MJ, Carter CS. Developing treatments for impaired cognition in schizophrenia. Trends Cogn Sci. 2012 Jan;16(1):35-42. doi: 10.1016/j.tics.2011.11.017. Epub 2011 Dec 16.
• Background Lesh TA, Niendam TA, Minzenberg MJ, Carter CS. Cognitive control deficits in schizophrenia: mechanisms and meaning. Neuropsychopharmacology. 2011 Jan;36(1):316-38. doi: 10.1038/npp.2010.156. Epub 2010 Sep 15.
• Background Minzenberg MJ, Laird AR, Thelen S, Carter CS, Glahn DC. Meta-analysis of 41 functional neuroimaging studies of executive function in schizophrenia. Arch Gen Psychiatry. 2009 Aug;66(8):811-22. doi: 10.1001/archgenpsychiatry.2009.91.
• Background Cho KK, Hoch R, Lee AT, Patel T, Rubenstein JL, Sohal VS. Gamma rhythms link prefrontal interneuron dysfunction with cognitive inflexibility in Dlx5/6(+/-) mice. Neuron. 2015 Mar 18;85(6):1332-43. doi: 10.1016/j.neuron.2015.02.019. Epub 2015 Mar 5.

Drugs

Indications