Patients with schizophrenia have impaired auditory processing that has been demonstrated by diminished P50 response to paired auditory stimuli in event-related potential (ERP) studies. Cerebral processing can also be studied with magnetoencephalography (MEG). With a whole-head MEG, which enables one to simultaneously measure brain activity in both hemispheres, we investigated whether early parallel auditory processing is impaired in schizophrenia. Sequences of tones were monaurally presented to schizophrenia patients and healthy controls in a passive condition, and the event-related magnetic fields were recorded simultaneously over both auditory cortices. The interhemispheric latency difference of the P50m, but not that of the N100m, was significantly shorter in the patient group in the right-ear but not in the left-ear stimulus condition. Further, the ipsilateral P50m was significantly earlier in schizophrenia patients in the right-ear condition. This result suggests that schizophrenia affects the consecutive preconscious auditory processing in a different manner.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1093/oxfordjournals.schbul.a033404 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Deviant sound frequency and time stimuli in auditory oddball tasks reveal persistent aberrant brain activity in patients with psychosis and symptomatic remission.
J Psychiatr Res
January 2025
Department of Psychiatry and Clinical Psychology, Clínica Universidad de Navarra, Pamplona, Spain; Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain.
The detection of rare or deviant stimuli shares common brain circuits involved in temporal processing and salience, critical for cognitive control. Disruption in these processes may contribute to the mechanisms of the disease and explain cognitive deficits observed in psychosis and related disorders. We designed a neuroimaging study, using oddball task-based functional sequences (fMRI) and diffusion tensor imaging (DTI), comparing healthy controls (HC, n = 14, 7 females) and patients with stable psychosis (PSY, n = 20, 10 females).
View Article and Find Full Text PDFHearing in categories and speech perception at the "cocktail party".
PLoS One
January 2025
School of Communication Sciences & Disorders, University of Memphis, Memphis, Tennessee, United States of America.
We aimed to test whether hearing speech in phonetic categories (as opposed to a continuous/gradient fashion) affords benefits to "cocktail party" speech perception. We measured speech perception performance (recognition, localization, and source monitoring) in a simulated 3D cocktail party environment. We manipulated task difficulty by varying the number of additional maskers presented at other spatial locations in the horizontal soundfield (1-4 talkers) and via forward vs.
View Article and Find Full Text PDFPost-stroke aphasia is a network disorder characterized by language impairments and aberrant network activation. While patients with post-stroke aphasia recover over time, the dynamics of the underlying changes in the brain remain elusive. Neuroimaging work demonstrated that language recovery is a heterogeneous process, characterized by varying activation levels in several regions of the left-hemispheric language network and the domain-general bilateral multiple-demand network.
View Article and Find Full Text PDFEXPRESS: A Megastudy of Lexico-semantic Effects in Single-word Shadowing.
Q J Exp Psychol (Hove)
January 2025
Department of Psychology, National University of Singapore.
Lexico-semantic effects in lexical decision and semantic categorization tasks have been investigated using the megastudy approach, but not with other traditional spoken word recognition tasks. To address this gap, the present megastudy, using words from the McRae et al. (2005) norms, examined the single-word shadowing task, where 96 native English speakers repeated aloud each word they heard as quickly and as accurately as possible.
View Article and Find Full Text PDFAudiometric Outcomes of Auditory Brainstem Implantation during Vestibular Schwannoma Resection in NF2 Patients.
J Neurol Surg B Skull Base
February 2025
Department of Neurosurgery, UC San Diego Medical Center, San Diego, California, United States.
Many patients with neurofibromatosis type 2 (NF2) suffer from sensorineural hearing loss, and associated cochlear nerve compromise in NF2 patients makes auditory brainstem implant (ABI) an attractive treatment option. The long-term outcomes and benefits of the device are still being explored. A retrospective review was conducted for 11 ABI recipients at a single-institution tertiary center between November 2017 and August 2022.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!