Alterations in cortical network oscillations and parvalbumin neurons in schizophrenia

Biol Psychiatry. 2015 Jun 15;77(12):1031-40. doi: 10.1016/j.biopsych.2015.03.010. Epub 2015 Mar 17.


Cognitive deficits are a core clinical feature of schizophrenia but respond poorly to available medications. Thus, understanding the neural basis of these deficits is crucial for the development of new therapeutic interventions. The types of cognitive processes affected in schizophrenia are thought to depend on the precisely timed transmission of information in cortical regions via synchronous oscillations at gamma band frequency. Here, we review 1) data from clinical studies suggesting that induction of frontal cortex gamma oscillations during tasks that engage cognitive or complex perceptual functions is attenuated in schizophrenia; 2) findings from basic neuroscience studies highlighting the features of parvalbumin-positive interneurons that are critical for gamma oscillation production; and 3) results from recent postmortem human brain studies providing additional molecular bases for parvalbumin-positive interneuron alterations in prefrontal cortical circuitry in schizophrenia.

Keywords: Cognition; GABA; Gamma oscillations; Inhibition; Prefrontal cortex; Working memory.

Publication types

  • Research Support, N.I.H., Extramural
  • Review

MeSH terms

  • Animals
  • Brain Waves / physiology*
  • Cerebral Cortex / physiopathology*
  • Cortical Synchronization
  • GABAergic Neurons / physiology
  • Gamma Rhythm / physiology*
  • Humans
  • Models, Neurological
  • Nerve Net / physiopathology*
  • Neural Inhibition*
  • Parvalbumins
  • Schizophrenia / physiopathology*
  • Schizophrenic Psychology


  • Parvalbumins