1
|
Piai V, Oostenveld R, Schoffelen JM, Piastra MC. The impact of CSF-filled cavities on scalp EEG and its implications. Psychophysiology 2024:e14624. [PMID: 38873838 DOI: 10.1111/psyp.14624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 04/04/2024] [Accepted: 05/22/2024] [Indexed: 06/15/2024]
Abstract
Previous studies have found electroencephalogram (EEG) amplitude and scalp topography differences between neurotypical and neurological/neurosurgical groups, being interpreted at the cognitive level. However, these comparisons are invariably accompanied by anatomical changes. Critical to EEG are the so-called volume currents, which are affected by the spatial distribution of the different tissues in the head. We investigated the effect of cerebrospinal fluid (CSF)-filled cavities on simulated EEG scalp data. We simulated EEG scalp potentials for known sources using different volume conduction models: a reference model (i.e., unlesioned brain) and models with realistic CSF-filled cavities gradually increasing in size. We used this approach for a single source close or far from the CSF-lesion cavity, and for a scenario with a distributed configuration of sources (i.e., a "cognitive event-related potential effect"). The magnitude and topography errors between the reference and lesion models were quantified. For the single-source simulation close to the lesion, the CSF-filled lesion modulated signal amplitude with more than 17% magnitude error and topography with more than 9% topographical error. Negligible modulation was found for the single source far from the lesion. For the multisource simulations of the cognitive effect, the CSF-filled lesion modulated signal amplitude with more than 6% magnitude error and topography with more than 16% topography error in a nonmonotonic fashion. In conclusion, the impact of a CSF-filled cavity cannot be neglected for scalp-level EEG data. Especially when group-level comparisons are made, any scalp-level attenuated, aberrant, or absent effects are difficult to interpret without considering the confounding effect of CSF.
Collapse
Affiliation(s)
- Vitória Piai
- Radboud University, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands
| | - Robert Oostenveld
- Radboud University, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands
- NatMEG, Karolinska Institutet, Stockholm, Sweden
| | - Jan Mathijs Schoffelen
- Radboud University, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands
| | - Maria Carla Piastra
- Clinical Neurophysiology, Technical Medical Centre, Faculty of Science and Technology, University of Twente, Enschede, The Netherlands
| |
Collapse
|
2
|
Fan X, Yang T, Fan Y, Song W, Gu W, Lu X, Chen Y, Chen X. Hearing outcomes following cochlear implantation with anatomic or default frequency mapping in postlingual deafness adults. Eur Arch Otorhinolaryngol 2024; 281:719-729. [PMID: 37548704 DOI: 10.1007/s00405-023-08151-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 07/24/2023] [Indexed: 08/08/2023]
Abstract
PURPOSE The aim of this study was to compare the outcomes of different mapping procedures based on anatomic or default frequency distribution in postlingual deafness adults who underwent cochlear implantation (CI). METHODS Forty-eight adults with postlingual deafness who underwent CI (MED-EL) from January 2021 to May 2022 in our hospital were prospectively recruited. The participants were randomly assigned to two groups (the anatomic group and the default group). Postoperative computerized tomography (CT) scans were evaluated with Otoplan® to determine the angular insertion depth (AID) and the specific locations of the intracochlear electrodes. Anatomic maps were imported into MAESTRO 9.0 software (MED-EL) for anatomy-based fitting for anatomic group, while default mapping program was set up for the default group. Hearing thresholds, Speech Recognition Scores (SRS), and subjects' auditory and musical abilities were evaluated 1 year after using the CI. Differences were determined in two groups using Stata statistical software, with significance defined as p < 0.05. RESULTS SRS under noisy conditions was significantly greater for anatomic group than the default group (p = 0.02). Under quiet conditions, however, mean hearing thresholds (0.5, 1, 2, and 4 kHz) and SRS did not differ significantly between the two groups (p = 0.07). Modified questionnaires showed that auditory (p = 0.02) and musical (p = 0.01) quality were significantly better following the anatomic mapping than the default procedure. CONCLUSION CI program based on the anatomic distribution may bring better SRS under noise conditions as well as better auditory and musical qualities than based on the default frequency distribution.
Collapse
Affiliation(s)
- Xinmiao Fan
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, #1 Shuaifuyuan, Beijing, 100730, People's Republic of China
| | - Tengyu Yang
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, #1 Shuaifuyuan, Beijing, 100730, People's Republic of China
| | - Yue Fan
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, #1 Shuaifuyuan, Beijing, 100730, People's Republic of China
| | - Wenjie Song
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, #1 Shuaifuyuan, Beijing, 100730, People's Republic of China
| | - Wei Gu
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, #1 Shuaifuyuan, Beijing, 100730, People's Republic of China
| | - Xiaoping Lu
- Department of Radiology, Peking Union Medical College Hospital, Beijing, People's Republic of China
| | - Yu Chen
- Department of Radiology, Peking Union Medical College Hospital, Beijing, People's Republic of China
| | - Xiaowei Chen
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, #1 Shuaifuyuan, Beijing, 100730, People's Republic of China.
| |
Collapse
|
3
|
Park MH, Kim JS, Lee S, Kim DH, Oh SH. Increased Resting-State Positron Emission Tomography Activity After Cochlear Implantation in Adult Deafened Cats. Clin Exp Otorhinolaryngol 2023; 16:326-333. [PMID: 36397262 DOI: 10.21053/ceo.2022.00423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 11/09/2022] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVES Cochlear implants are widely used for hearing rehabilitation in patients with profound sensorineural hearing loss. However, Cochlear implants have variable. RESULTS and central neural plasticity is considered to be a reason for this variability. We hypothesized that resting-state cortical networks play a role in conditions of profound hearing loss and are affected by cochlear implants. To investigate the resting-state neuronal networks after cochlear implantation, we acquired 18F-fluorodeoxyglucose (FDG)-positron emission tomography (PET) images in experimental animals. METHODS Eight adult domestic cats were enrolled in this study. The hearing threshold of the animals was within the normal range, as measured by auditory evoked potential. They were divided into control (n=4) and hearing loss (n=4) groups. Hearing loss was induced by co-administration of ethacrynic acid and kanamycin. FDG-PET was performed in a normal hearing state and 4 and 11 months after the deafening procedure. Cochlear implantation was performed in the right ear, and electrical cochlear stimulation was performed for 7 months (from 4 to 11 months after the deafening procedure). PET images were compared between the two groups at the three time points. RESULTS Four months after hearing loss, the auditory cortical area's activity decreased, and activity in the associated visual area increased. After 7 months of cochlear stimulation, the superior marginal gyrus and cingulate gyrus, which are components of the default mode network, showed hypermetabolism. The inferior colliculi showed hypometabolism. CONCLUSION Resting-state cortical activity in the default mode network components was elevated after cochlear stimulation. This suggests that the animals' awareness level was elevated after hearing restoration by the cochlear implantation.
Collapse
Affiliation(s)
- Min-Hyun Park
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul, Korea
- Department of Otorhinolaryngology, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Korea
| | - Jin Su Kim
- Division of RI Application, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
| | - Seonhwa Lee
- Division of RI Application, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
| | - Doo Hee Kim
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul, Korea
| | - Seung Ha Oh
- Department of Otorhinolaryngology, Seoul National University College of Medicine, Seoul, Korea
- Sensory Organ Research Institute, Seoul National University Medical Research Center, Seoul, Korea
| |
Collapse
|
4
|
Deroche MLD, Wolfe J, Neumann S, Manning J, Towler W, Alemi R, Bien AG, Koirala N, Hanna L, Henry L, Gracco VL. Auditory evoked response to an oddball paradigm in children wearing cochlear implants. Clin Neurophysiol 2023; 149:133-145. [PMID: 36965466 DOI: 10.1016/j.clinph.2023.02.179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 02/24/2023] [Accepted: 02/28/2023] [Indexed: 03/17/2023]
Abstract
OBJECTIVE Although children with cochlear implants (CI) achieve remarkable success with their device, considerable variability remains in individual outcomes. Here, we explored whether auditory evoked potentials recorded during an oddball paradigm could provide useful markers of auditory processing in this pediatric population. METHODS High-density electroencephalography (EEG) was recorded in 75 children listening to standard and odd noise stimuli: 25 had normal hearing (NH) and 50 wore a CI, divided between high language (HL) and low language (LL) abilities. Three metrics were extracted: the first negative and second positive components of the standard waveform (N1-P2 complex) close to the vertex, the mismatch negativity (MMN) around Fz and the late positive component (P3) around Pz of the difference waveform. RESULTS While children with CIs generally exhibited a well-formed N1-P2 complex, those with language delays typically lacked reliable MMN and P3 components. But many children with CIs with age-appropriate skills showed MMN and P3 responses similar to those of NH children. Moreover, larger and earlier P3 (but not MMN) was linked to better literacy skills. CONCLUSIONS Auditory evoked responses differentiated children with CIs based on their good or poor skills with language and literacy. SIGNIFICANCE This short paradigm could eventually serve as a clinical tool for tracking the developmental outcomes of implanted children.
Collapse
Affiliation(s)
- Mickael L D Deroche
- Department of Psychology, Concordia University, 7141 Sherbrooke St. West, Montreal, Quebec H4B 1R6, Canada.
| | - Jace Wolfe
- Hearts for Hearing Foundation, 11500 Portland Av., Oklahoma City, OK 73120, USA
| | - Sara Neumann
- Hearts for Hearing Foundation, 11500 Portland Av., Oklahoma City, OK 73120, USA
| | - Jacy Manning
- Hearts for Hearing Foundation, 11500 Portland Av., Oklahoma City, OK 73120, USA
| | - William Towler
- Hearts for Hearing Foundation, 11500 Portland Av., Oklahoma City, OK 73120, USA
| | - Razieh Alemi
- Department of Psychology, Concordia University, 7141 Sherbrooke St. West, Montreal, Quebec H4B 1R6, Canada
| | - Alexander G Bien
- University of Oklahoma College of Medicine, Otolaryngology, 800 Stanton L Young Blvd., Oklahoma City, OK 73117, USA
| | - Nabin Koirala
- Haskins Laboratories, 300 George St., New Haven, CT 06511, USA
| | - Lindsay Hanna
- Hearts for Hearing Foundation, 11500 Portland Av., Oklahoma City, OK 73120, USA
| | - Lauren Henry
- Hearts for Hearing Foundation, 11500 Portland Av., Oklahoma City, OK 73120, USA
| | | |
Collapse
|
5
|
Tao DD, Zhang YM, Liu H, Zhang W, Xu M, Galvin JJ, Zhang D, Liu JS. The P300 Auditory Event-Related Potential May Predict Segregation of Competing Speech by Bimodal Cochlear Implant Listeners. Front Neurosci 2022; 16:888596. [PMID: 35757527 PMCID: PMC9226716 DOI: 10.3389/fnins.2022.888596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 05/16/2022] [Indexed: 11/13/2022] Open
Abstract
Compared to normal-hearing (NH) listeners, cochlear implant (CI) listeners have greater difficulty segregating competing speech. Neurophysiological studies have largely investigated the neural foundations for CI listeners' speech recognition in quiet, mainly using the P300 component of event-related potentials (ERPs). P300 is closely related to cognitive processes involving auditory discrimination, selective attention, and working memory. Different from speech perception in quiet, little is known about the neurophysiological foundations for segregation of competing speech by CI listeners. In this study, ERPs were measured for a 1 vs. 2 kHz contrast in 11 Mandarin-speaking bimodal CI listeners and 11 NH listeners. Speech reception thresholds (SRTs) for a male target talker were measured in steady noise or with a male or female masker. Results showed that P300 amplitudes were significantly larger and latencies were significantly shorter for the NH than for the CI group. Similarly, SRTs were significantly better for the NH than for the CI group. Across all participants, P300 amplitude was significantly correlated with SRTs in steady noise (r = -0.65, p = 0.001) and with the competing male (r = -0.62, p = 0.002) and female maskers (r = -0.60, p = 0.003). Within the CI group, there was a significant correlation between P300 amplitude and SRTs with the male masker (r = -0.78, p = 0.005), which produced the most informational masking. The results suggest that P300 amplitude may be a clinically useful neural correlate of central auditory processing capabilities (e.g., susceptibility to informational masking) in bimodal CI patients.
Collapse
Affiliation(s)
- Duo-Duo Tao
- Department of Ear, Nose, and Throat, Shaanxi Provincial People's Hospital, Xi'An, China
| | - Yun-Mei Zhang
- Department of Ear, Nose, and Throat, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Hui Liu
- Department of Ear, Nose, and Throat, Shaanxi Provincial People's Hospital, Xi'An, China
| | - Wen Zhang
- Department of Ear, Nose, and Throat, Shaanxi Provincial People's Hospital, Xi'An, China
| | - Min Xu
- Department of Ear, Nose, and Throat, Shaanxi Provincial People's Hospital, Xi'An, China
| | - John J Galvin
- House Institute Foundation, Los Angeles, CA, United States
| | - Dan Zhang
- Department of Ear, Nose, and Throat, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Ji-Sheng Liu
- Department of Ear, Nose, and Throat, The First Affiliated Hospital of Soochow University, Suzhou, China
| |
Collapse
|
6
|
Beynon AJ, Luijten BM, Mylanus EAM. Intracorporeal Cortical Telemetry as a Step to Automatic Closed-Loop EEG-Based CI Fitting: A Proof of Concept. Audiol Res 2021; 11:691-705. [PMID: 34940020 PMCID: PMC8698912 DOI: 10.3390/audiolres11040062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/04/2021] [Accepted: 12/09/2021] [Indexed: 11/16/2022] Open
Abstract
Electrically evoked auditory potentials have been used to predict auditory thresholds in patients with a cochlear implant (CI). However, with exception of electrically evoked compound action potentials (eCAP), conventional extracorporeal EEG recording devices are still needed. Until now, built-in (intracorporeal) back-telemetry options are limited to eCAPs. Intracorporeal recording of auditory responses beyond the cochlea is still lacking. This study describes the feasibility of obtaining longer latency cortical responses by concatenating interleaved short recording time windows used for eCAP recordings. Extracochlear reference electrodes were dedicated to record cortical responses, while intracochlear electrodes were used for stimulation, enabling intracorporeal telemetry (i.e., without an EEG device) to assess higher cortical processing in CI recipients. Simultaneous extra- and intra-corporeal recordings showed that it is feasible to obtain intracorporeal slow vertex potentials with a CI similar to those obtained by conventional extracorporeal EEG recordings. Our data demonstrate a proof of concept of closed-loop intracorporeal auditory cortical response telemetry (ICT) with a cochlear implant device. This research breaks new ground for next generation CI devices to assess higher cortical neural processing based on acute or continuous EEG telemetry to enable individualized automatic and/or adaptive CI fitting with only a CI.
Collapse
Affiliation(s)
- Andy J. Beynon
- Vestibular & Auditory Evoked Potential Lab, Department Oto-Rhino-Laryngology, Head & Neck Surgery, 6525 EX Nijmegen, The Netherlands
- Hearing & Implants, Department Oto-Rhino-Laryngology, Head & Neck Surgery, Donders Center Medical Neuroscience, 6525 EX Nijmegen, The Netherlands; (B.M.L.); (E.A.M.M.)
- Correspondence:
| | - Bart M. Luijten
- Hearing & Implants, Department Oto-Rhino-Laryngology, Head & Neck Surgery, Donders Center Medical Neuroscience, 6525 EX Nijmegen, The Netherlands; (B.M.L.); (E.A.M.M.)
| | - Emmanuel A. M. Mylanus
- Hearing & Implants, Department Oto-Rhino-Laryngology, Head & Neck Surgery, Donders Center Medical Neuroscience, 6525 EX Nijmegen, The Netherlands; (B.M.L.); (E.A.M.M.)
| |
Collapse
|
7
|
Kileny PR. Event-related potentials and cochlear implants: The "inside-the-brain" story. Clin Neurophysiol 2020; 132:212-213. [PMID: 33243616 DOI: 10.1016/j.clinph.2020.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 11/03/2020] [Indexed: 10/23/2022]
Affiliation(s)
- Paul R Kileny
- University of Michigan, Michigan Medicine, 1500 E. Medical Center Drive SPC 5312, Ann Arbor, MI 48109-5312, USA.
| |
Collapse
|