Cited by 65Schizophrenia research and treatmentTranscranial Magnetic Stimulation StudiesNeural dynamics and brain function

Electrophysiological assessment of auditory stimulus-specific plasticity in schizophrenia

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Mears, Ryan P., Spencer, Kevin M.·2012·Biological Psychiatry

Abstract

Background Disrupted neuroplasticity may be an important aspect of the neural basis of schizophrenia. We used event-related brain potentials (ERPs) to assay neuroplasticity after auditory conditioning in chronic schizophrenia patients (SZ) and matched healthy control subjects (HC).Methods Subjects (15 HC, 14 SZ) performed an auditory oddball task during electroencephalogram recording before and after auditory tetanic stimulation (Pre/Post Blocks). Each oddball block consisted of 1000-Hz and 1500-Hz standards and 400-Hz targets. During tetanic conditioning, 1000-Hz tones were presented at 11 Hz for 2.4 min. We analyzed the standard trials, comparing the ERPs evoked by the tetanized stimuli (1000 Hz tones: TS+) and untetanized stimuli (1500 Hz tones: TS-) in the Post Blocks with ERPs from the Pre Blocks (averaged into Baseline ERPs).Results In Post Block 1 in HC, TS+ tones evoked a negative shift (60-350 msec) at right temporal electrodes relative to Baseline. No pre-/post-tetanus effects were found in SZ. In Post Block 2 in HC, TS+ tones evoked a positive shift (200-300 msec) at bilateral frontal electrodes. In SZ, TS+ tones evoked a positive shift (100-400 msec) at right frontotemporal electrodes. No pre-/post-tetanus effects were found in either subject group for the TS- tones. The right temporal Post Block 1 and 2 effects were correlated in SZ, suggesting a trade-off in the expression of these effects.Conclusions These results suggest that stimulus-specific auditory neuroplasticity is abnormal in schizophrenia. The electrophysiologic assessment of stimulus-specific plasticity may yield novel targets for drug treatment in schizophrenia.

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Crossref · 10.1016/j.biopsych.2011.12.016

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  • In chronic schizophrenia patients, deficits in visual cortex and long-term potentiation-like plasticity are reported when probed by transcranial direct current stimulation.

    “In chronic schizophrenia patients, deficits in visual cortex and long-term potentiation-like plasticity are reported when probed by transcranial direct current stimulation (55–58).”

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Authors
Mears, R. P., & Spencer, K. M.
Affiliations
Harvard University (US)
Corresponding author
Spencer, Kevin M.
Venue
Biological Psychiatry
Publisher
Elsevier BV
Published
2012-03
Volume
71
Issue
6
Pages
503-511
ISSN
0006-3223 (ISSN-L)
OpenAlex
W2032210947
Cited by
64
References
50
Citations by year
2024: 1 · 2023: 1 · 2022: 2 · 2021: 6 · 2020: 5 · 2019: 18 · 2018: 4 · 2017: 7 · 2016: 2 · 2015: 6 · 2014: 6 · 2013: 1 · 2012: 3
FWCI
3.87
Type
journal article
Language
en
Open access
Locations
  • Biological Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • U.S. Department of Veterans Affairs (CX000154)
  • Foundation for the National Institutes of Health
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Neurology › Transcranial Magnetic Stimulation Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
schizophrenia, auditory oddball paradigm, event-related potentials, auditory cortex, treatment goals
MeSH terms
Acoustic Stimulation, Adult, Analysis of Variance, Brain, Brain Mapping, Electroencephalography, Evoked Potentials, Evoked Potentials, Auditory, Humans, Middle Aged, Neuronal Plasticity, Schizophrenia, Task Performance and Analysis, Young Adult

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