Mismatch negativity as an early biomarker of cognitive impairment in schizophrenia
Abstract Background Due to its disturbance in schizophrenic patients, mismatch negativity (MMN) generation is believed to be a potential biomarker for recognizing primary impairments in auditory sensory processing during the course of the disease. However, great controversy exists regarding the type...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2023-02-01
|
| Series: | The Egyptian Journal of Neurology, Psychiatry and Neurosurgery |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s41983-023-00627-5 |
| _version_ | 1797865256567963648 |
|---|---|
| author | Abeer Mamdouh Ali Mahmoud Mai Abd-Elraoof Eissa Enaas Ahmad Kolkaila Reham Abdel Rahman Amer Mona Ahmed Kotait |
| author_facet | Abeer Mamdouh Ali Mahmoud Mai Abd-Elraoof Eissa Enaas Ahmad Kolkaila Reham Abdel Rahman Amer Mona Ahmed Kotait |
| author_sort | Abeer Mamdouh Ali Mahmoud |
| collection | DOAJ |
| description | Abstract Background Due to its disturbance in schizophrenic patients, mismatch negativity (MMN) generation is believed to be a potential biomarker for recognizing primary impairments in auditory sensory processing during the course of the disease. However, great controversy exists regarding the type and onset of MMN-related impairments, with the deficits to frequency deviants is more debatable. This cross-sectional, case–control study was conducted to assess the cognitive functions among 33 eligible Egyptian schizophrenics (15 early and 18 chronic), and 30 matched healthy controls by assessing their psychometric tests and correlating them to the coexisting frequency deviant MMN responses (using both tone and speech stimuli). Results Deficits in frequency MMN and neuropsychological tests were evident among early and chronic schizophrenics compared to their matched control counterparts, and also between early versus chronic schizophrenia in favor of the later. MMN deficits to speech stimuli were more elicited than tone stimuli among schizophrenics. Moreover, significant correlations were identified between MMN parameters and the results of psychiatric cognitive scales. Conclusions We demonstrated that frequency-deviant MMN deficits are evident feature among the enrolled Egyptian schizophrenics. The cognitive functions as indexed by MMN seem affected early, with the striking decrease of MMN amplitude and delay of latency point towards the progression of the illness. The normal lateralization of MMN was absent in chronic schizophrenia. These findings could be helpful in using the MMN as an additional objective tool for confirming cognitive impairments among schizophrenics and to differentiate between early- and chronic-schizophrenic patients for medico-legal purposes and clinical implication for medications. |
| first_indexed | 2024-04-09T23:05:22Z |
| format | Article |
| id | doaj.art-8b37fac2875944a1a54639fcd3dcb5b6 |
| institution | Directory Open Access Journal |
| issn | 1687-8329 |
| language | English |
| last_indexed | 2024-04-09T23:05:22Z |
| publishDate | 2023-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | The Egyptian Journal of Neurology, Psychiatry and Neurosurgery |
| spelling | doaj.art-8b37fac2875944a1a54639fcd3dcb5b62023-03-22T10:43:57ZengSpringerOpenThe Egyptian Journal of Neurology, Psychiatry and Neurosurgery1687-83292023-02-0159111310.1186/s41983-023-00627-5Mismatch negativity as an early biomarker of cognitive impairment in schizophreniaAbeer Mamdouh Ali Mahmoud0Mai Abd-Elraoof Eissa1Enaas Ahmad Kolkaila2Reham Abdel Rahman Amer3Mona Ahmed Kotait4Ministry of Health HospitalsNeuropsychiatry Department, Faculty of Medicine, Tanta UniversityAudio-Vestibular Medicine-ENT, Faculty of Medicine, Tanta UniversityNeuropsychiatry Department, Faculty of Medicine, Tanta UniversityAudio-Vestibular Medicine-ENT, Faculty of Medicine, Tanta UniversityAbstract Background Due to its disturbance in schizophrenic patients, mismatch negativity (MMN) generation is believed to be a potential biomarker for recognizing primary impairments in auditory sensory processing during the course of the disease. However, great controversy exists regarding the type and onset of MMN-related impairments, with the deficits to frequency deviants is more debatable. This cross-sectional, case–control study was conducted to assess the cognitive functions among 33 eligible Egyptian schizophrenics (15 early and 18 chronic), and 30 matched healthy controls by assessing their psychometric tests and correlating them to the coexisting frequency deviant MMN responses (using both tone and speech stimuli). Results Deficits in frequency MMN and neuropsychological tests were evident among early and chronic schizophrenics compared to their matched control counterparts, and also between early versus chronic schizophrenia in favor of the later. MMN deficits to speech stimuli were more elicited than tone stimuli among schizophrenics. Moreover, significant correlations were identified between MMN parameters and the results of psychiatric cognitive scales. Conclusions We demonstrated that frequency-deviant MMN deficits are evident feature among the enrolled Egyptian schizophrenics. The cognitive functions as indexed by MMN seem affected early, with the striking decrease of MMN amplitude and delay of latency point towards the progression of the illness. The normal lateralization of MMN was absent in chronic schizophrenia. These findings could be helpful in using the MMN as an additional objective tool for confirming cognitive impairments among schizophrenics and to differentiate between early- and chronic-schizophrenic patients for medico-legal purposes and clinical implication for medications.https://doi.org/10.1186/s41983-023-00627-5Early schizophreniaChronic schizophreniaMismatch negativityBiomarkerCognitive impairmentPsychometric tests |
| spellingShingle | Abeer Mamdouh Ali Mahmoud Mai Abd-Elraoof Eissa Enaas Ahmad Kolkaila Reham Abdel Rahman Amer Mona Ahmed Kotait Mismatch negativity as an early biomarker of cognitive impairment in schizophrenia The Egyptian Journal of Neurology, Psychiatry and Neurosurgery Early schizophrenia Chronic schizophrenia Mismatch negativity Biomarker Cognitive impairment Psychometric tests |
| title | Mismatch negativity as an early biomarker of cognitive impairment in schizophrenia |
| title_full | Mismatch negativity as an early biomarker of cognitive impairment in schizophrenia |
| title_fullStr | Mismatch negativity as an early biomarker of cognitive impairment in schizophrenia |
| title_full_unstemmed | Mismatch negativity as an early biomarker of cognitive impairment in schizophrenia |
| title_short | Mismatch negativity as an early biomarker of cognitive impairment in schizophrenia |
| title_sort | mismatch negativity as an early biomarker of cognitive impairment in schizophrenia |
| topic | Early schizophrenia Chronic schizophrenia Mismatch negativity Biomarker Cognitive impairment Psychometric tests |
| url | https://doi.org/10.1186/s41983-023-00627-5 |
| work_keys_str_mv | AT abeermamdouhalimahmoud mismatchnegativityasanearlybiomarkerofcognitiveimpairmentinschizophrenia AT maiabdelraoofeissa mismatchnegativityasanearlybiomarkerofcognitiveimpairmentinschizophrenia AT enaasahmadkolkaila mismatchnegativityasanearlybiomarkerofcognitiveimpairmentinschizophrenia AT rehamabdelrahmanamer mismatchnegativityasanearlybiomarkerofcognitiveimpairmentinschizophrenia AT monaahmedkotait mismatchnegativityasanearlybiomarkerofcognitiveimpairmentinschizophrenia |