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Ertl M, Zu Eulenburg P, Woller M, Mayadali Ü, Boegle R, Dieterich M. Vestibular mapping of the naturalistic head-centered motion spectrum. J Vestib Res 2023; 33:299-312. [PMID: 37458057 DOI: 10.3233/ves-210121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
BACKGROUND Naturalistic head accelerations can be used to elicit vestibular evoked potentials (VestEPs). These potentials allow for analysis of cortical vestibular processing and its multi-sensory integration with a high temporal resolution. METHODS We report the results of two experiments in which we compared the differential VestEPs elicited by randomized translations, rotations, and tilts in healthy subjects on a motion platform. RESULTS An event-related potential (ERP) analysis revealed that established VestEPs were verifiable in all three acceleration domains (translations, rotations, tilts). A further analysis of the VestEPs showed a significant correlation between rotation axes (yaw, pitch, roll) and the amplitude of the evoked potentials. We found increased amplitudes for rotations in the roll compared to the pitch and yaw plane. A distributed source localization analysis showed that the activity in the cingulate sulcus visual (CSv) area best explained direction-dependent amplitude modulations of the VestEPs, but that the same cortical network (posterior insular cortex, CSv) is involved in processing vestibular information, regardless of the motion direction. CONCLUSION The results provide evidence for an anisotropic, direction-dependent processing of vestibular input by cortical structures. The data also suggest that area CSv plays an integral role in ego-motion perception and interpretation of spatial features such as acceleration direction and intensity.
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Affiliation(s)
- Matthias Ertl
- Department of Psychology, University of Bern, Bern, Switzerland
- Department of Neurology, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Peter Zu Eulenburg
- German Center for Vertigo and Balance Disorders (IFBLMU), Ludwig-Maximilians-Universität München, Munich, Germany
- Graduate School of Systemic Neuroscience, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Marie Woller
- Department of Neurology, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Ümit Mayadali
- Graduate School of Systemic Neuroscience, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Rainer Boegle
- German Center for Vertigo and Balance Disorders (IFBLMU), Ludwig-Maximilians-Universität München, Munich, Germany
- Graduate School of Systemic Neuroscience, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Marianne Dieterich
- Department of Neurology, Ludwig-Maximilians-Universität München, Munich, Germany
- German Center for Vertigo and Balance Disorders (IFBLMU), Ludwig-Maximilians-Universität München, Munich, Germany
- Graduate School of Systemic Neuroscience, Ludwig-Maximilians-Universität München, Munich, Germany
- Munich Cluster for Neurology (SyNergy), Munich, Germany
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Nakul E, Bartolomei F, Lopez C. Vestibular-Evoked Cerebral Potentials. Front Neurol 2021; 12:674100. [PMID: 34621231 PMCID: PMC8490637 DOI: 10.3389/fneur.2021.674100] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 08/20/2021] [Indexed: 11/30/2022] Open
Abstract
The human vestibular cortex has mostly been approached using functional magnetic resonance imaging and positron emission tomography combined with artificial stimulation of the vestibular receptors or nerve. Few studies have used electroencephalography and benefited from its high temporal resolution to describe the spatiotemporal dynamics of vestibular information processing from the first milliseconds following vestibular stimulation. Evoked potentials (EPs) are largely used to describe neural processing of other sensory signals, but they remain poorly developed and standardized in vestibular neuroscience and neuro-otology. Yet, vestibular EPs of brainstem, cerebellar, and cortical origin have been reported as early as the 1960s. This review article summarizes and compares results from studies that have used a large range of vestibular stimulation, including natural vestibular stimulation on rotating chairs and motion platforms, as well as artificial vestibular stimulation (e.g., sounds, impulsive acceleration stimulation, galvanic stimulation). These studies identified vestibular EPs with short latency (<20 ms), middle latency (from 20 to 50 ms), and late latency (>50 ms). Analysis of the generators (source analysis) of these responses offers new insights into the neuroimaging of the vestibular system. Generators were consistently found in the parieto-insular and temporo-parietal junction-the core of the vestibular cortex-as well as in the prefrontal and frontal areas, superior parietal, and temporal areas. We discuss the relevance of vestibular EPs for basic research and clinical neuroscience and highlight their limitations.
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Affiliation(s)
- Estelle Nakul
- Centre National de la Recherche Scientifique (CNRS), Laboratoire de Neurosciences Cognitives (LNC), FR3C, Aix Marseille Univ, Marseille, France
| | - Fabrice Bartolomei
- Institut de Neurosciences des Systèmes, Inserm, Aix Marseille Univ, Marseille, France
- Service de Neurophysiologie Clinique, Hôpital Timone, Aix Marseille Univ, Marseille, France
| | - Christophe Lopez
- Centre National de la Recherche Scientifique (CNRS), Laboratoire de Neurosciences Cognitives (LNC), FR3C, Aix Marseille Univ, Marseille, France
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Ertl M, Zu Eulenburg P, Woller M, Dieterich M. The role of delta and theta oscillations during ego-motion in healthy adult volunteers. Exp Brain Res 2021; 239:1073-1083. [PMID: 33534022 PMCID: PMC8068649 DOI: 10.1007/s00221-020-06030-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 12/30/2020] [Indexed: 12/15/2022]
Abstract
The successful cortical processing of multisensory input typically requires the integration of data represented in different reference systems to perform many fundamental tasks, such as bipedal locomotion. Animal studies have provided insights into the integration processes performed by the neocortex and have identified region specific tuning curves for different reference frames during ego-motion. Yet, there remains almost no data on this topic in humans. In this study, an experiment originally performed in animal research with the aim to identify brain regions modulated by the position of the head and eyes relative to a translational ego-motion was adapted for humans. Subjects sitting on a motion platform were accelerated along a translational pathway with either eyes and head aligned or a 20° yaw-plane offset relative to the motion direction while EEG was recorded. Using a distributed source localization approach, it was found that activity in area PFm, a part of Brodmann area 40, was modulated by the congruency of translational motion direction, eye, and head position. In addition, an asymmetry between the hemispheres in the opercular-insular region was observed during the cortical processing of the vestibular input. A frequency specific analysis revealed that low-frequency oscillations in the delta- and theta-band are modulated by vestibular stimulation. Source-localization estimated that the observed low-frequency oscillations are generated by vestibular core-regions, such as the parieto-opercular region and frontal areas like the mid-orbital gyrus and the medial frontal gyrus.
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Affiliation(s)
- M Ertl
- Department of Psychology, University of Bern, Fabrikstrasse 8, 3012, Bern, Switzerland.
- Department of Neurology, Ludwig-Maximilians-Universität München, München, Germany.
| | - P Zu Eulenburg
- German Center for Vertigo and Balance Disorders (IFBLMU), Ludwig-Maximilians-Universität München, München, Germany
- Institute for Neuroradiology, Ludwig-Maximilians-Universität München, München, Germany
| | - M Woller
- Department of Neurology, Ludwig-Maximilians-Universität München, München, Germany
| | - M Dieterich
- Department of Neurology, Ludwig-Maximilians-Universität München, München, Germany
- German Center for Vertigo and Balance Disorders (IFBLMU), Ludwig-Maximilians-Universität München, München, Germany
- Graduate School of Systemic Neuroscience, Ludwig-Maximilians-Universität München, München, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
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4
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Salami A, Andreu-Perez J, Gillmeister H. Symptoms of depersonalisation/derealisation disorder as measured by brain electrical activity: A systematic review. Neurosci Biobehav Rev 2020; 118:524-537. [PMID: 32846163 DOI: 10.1016/j.neubiorev.2020.08.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 07/31/2020] [Accepted: 08/14/2020] [Indexed: 11/30/2022]
Abstract
Depersonalisation/derealisation disorder (DPD) refers to frequent and persistent detachment from bodily self and disengagement from the outside world. As a dissociative disorder, DPD affects 1-2 % of the population, but takes 7-12 years on average to be accurately diagnosed. In this systematic review, we comprehensively describe research targeting the neural correlates of core DPD symptoms, covering publications between 1992 and 2020 that have used electrophysiological techniques. The aim was to investigate the diagnostic potential of these relatively inexpensive and convenient neuroimaging tools. We review the EEG power spectrum, components of the event-related potential (ERP), as well as vestibular and heartbeat evoked potentials as likely electrophysiological biomarkers to study DPD symptoms. We argue that acute anxiety- or trauma-related impairments in the integration of interoceptive and exteroceptive signals play a key role in the formation of DPD symptoms, and that future research needs analysis methods that can take this integration into account. We suggest tools for prospective studies of electrophysiological DPD biomarkers, which are urgently needed to fully develop their diagnostic potential.
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Affiliation(s)
- Abbas Salami
- School of Computer Science and Electronic Engineering, University of Essex, Wivenhoe Park, Colchester, CO4 3SQ, UK; Smart Health Technologies Group, Centre for Computational Intelligence, University of Essex, Wivenhoe Park, Colchester, CO4 3SQ, UK.
| | - Javier Andreu-Perez
- School of Computer Science and Electronic Engineering, University of Essex, Wivenhoe Park, Colchester, CO4 3SQ, UK; Smart Health Technologies Group, Centre for Computational Intelligence, University of Essex, Wivenhoe Park, Colchester, CO4 3SQ, UK.
| | - Helge Gillmeister
- Department of Psychology and Centre for Brain Science, University of Essex, Wivenhoe Park, Colchester, CO4 3SQ, UK; Smart Health Technologies Group, Centre for Computational Intelligence, University of Essex, Wivenhoe Park, Colchester, CO4 3SQ, UK.
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Agrawal Y, Smith PF, Rosenberg PB. Vestibular impairment, cognitive decline and Alzheimer's disease: balancing the evidence. Aging Ment Health 2020; 24:705-708. [PMID: 30691295 PMCID: PMC6663651 DOI: 10.1080/13607863.2019.1566813] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The vestibular (inner ear balance) system senses head movement and orientation in space. Vestibular sensory input plays a critical role in spatial cognitive abilities such as spatial memory and spatial navigation. Vestibular function declines with age, and recent studies have shown that age-related vestibular impairment is associated with poorer spatial cognitive skills in healthy older adults. Moreover, vestibular impairment is disproportionately prevalent among individuals with mild cognitive impairment and Alzheimer's disease, and specifically in cognitively-impaired individuals who have spatial deficits such as disorientation and difficulty driving. Indeed, emerging evidence suggests that age-related vestibular impairment contributes to a 'spatial' subtype of Alzheimer's disease, characterized by highly morbid symptoms such as wandering and falls. Given that vestibular impairment can be treated through simple, physical-therapy based exercises, identifying and treating vestibular deficits in older adults with and without cognitive impairment may offer substantial benefit in preventing, mitigating and forestalling cognitive decline.
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Affiliation(s)
- Y Agrawal
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins School of Medicine,Corresponding author: Yuri Agrawal, 601 North Caroline Street, 6th Floor Outpatient Center, Baltimore, MD 21287 USA,
| | - PF Smith
- Department Pharmacology and Toxicology, School of Medical Sciences, and the Brain Health Research Centre, University of Otago
| | - PB Rosenberg
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine
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Ertl M, Boegle R. Investigating the vestibular system using modern imaging techniques-A review on the available stimulation and imaging methods. J Neurosci Methods 2019; 326:108363. [PMID: 31351972 DOI: 10.1016/j.jneumeth.2019.108363] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 07/12/2019] [Accepted: 07/12/2019] [Indexed: 02/06/2023]
Abstract
The vestibular organs, located in the inner ear, sense linear and rotational acceleration of the head and its position relative to the gravitational field of the earth. These signals are essential for many fundamental skills such as the coordination of eye and head movements in the three-dimensional space or the bipedal locomotion of humans. Furthermore, the vestibular signals have been shown to contribute to higher cognitive functions such as navigation. As the main aim of the vestibular system is the sensation of motion it is a challenging system to be studied in combination with modern imaging methods. Over the last years various different methods were used for stimulating the vestibular system. These methods range from artificial approaches like galvanic or caloric vestibular stimulation to passive full body accelerations using hexapod motion platforms, or rotatory chairs. In the first section of this review we provide an overview over all methods used in vestibular stimulation in combination with imaging methods (fMRI, PET, E/MEG, fNIRS). The advantages and disadvantages of every method are discussed, and we summarize typical settings and parameters used in previous studies. In the second section the role of the four imaging techniques are discussed in the context of vestibular research and their potential strengths and interactions with the presented stimulation methods are outlined.
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Affiliation(s)
- Matthias Ertl
- Department of Psychology, University of Bern, Switzerland; Sleep-Wake-Epilepsy Center, Department of Neurology, University Hospital (Inselspital) Bern, Switzerland.
| | - Rainer Boegle
- Department of Neurology, Ludwig-Maximilians-Universität München, Germany; German Center for Vertigo and Balance Disorders, IFB-LMU, Ludwig-Maximilians Universität, Munich, Germany
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Todd NPM, Govender S, Colebatch JG. Vestibular cerebellar evoked potentials in humans and their modulation during optokinetic stimulation. J Neurophysiol 2018; 120:3099-3109. [DOI: 10.1152/jn.00502.2018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
We recorded evoked potentials (EPs) from over the posterior fossa and in parallel ocular vestibular evoked myogenic potentials (OVEMPs) during visuo-vestibular stimulation in a sample of 7 male and 11 female human subjects. In 9 of the 18 subjects we were able to record EPs reliably in the form of an early biphasic positive-negative wave with latencies ~12 and 17 ms ipsilateral to head acceleration direction (P12-N17) and a slightly later, contralateral, biphasic positive-negative wave with latencies ~19 and 23 ms (P19-N23). The amplitudes of the responses varied widely between subjects. Both P12 and N23 EPs were modulated by the mode of visual stimulation, larger for vection (sense of movement) compared with optokinetic nystagmus and for congruent movement. We suggest that the EPs measured over the posterior fossa are a manifestation of climbing fiber responses of cerebellar cortical Purkinje cells, i.e., a form of vestibular cerebellar EP (VsCEP). The two subject groups with and without VsCEPs were distinguished by the magnitude of their OVEMPs and their subjective experience of vection. The modulation of VsCEPs by visual context may be a manifestation of cerebellar control of linear vestibular ocular reflex gain. NEW & NOTEWORTHY We report likely vestibular cerebellar evoked potentials (VsCEPs) produced by lateral head impulses recorded in intact humans over the posterior fossa. VsCEPs occurred as short-latency P12-N17 waves ipsilateral to the direction of head motion and as P19-N23 contralaterally and were present in half our subjects. Their properties suggest that the VsCEPs may be of a climbing-fiber origin. VsCEPs are related to the perception of motion and, possibly, control of linear vestibular ocular reflex gain.
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Affiliation(s)
- Neil P. M. Todd
- Department of Psychology, University of Exeter, United Kingdom
| | - Sendhil Govender
- Prince of Wales Clinical School, University of New South Wales, Sydney, New South Wales, Australia
- Neuroscience Research Australia, University of New South Wales, Sydney, New South Wales, Australia
| | - James G. Colebatch
- Prince of Wales Clinical School, University of New South Wales, Sydney, New South Wales, Australia
- Neuroscience Research Australia, University of New South Wales, Sydney, New South Wales, Australia
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8
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Kammermeier S, Maierbeck K, Dietrich L, Plate A, Lorenzl S, Singh A, Bötzel K, Maurer C. Qualitative postural control differences in Idiopathic Parkinson's Disease vs. Progressive Supranuclear Palsy with dynamic-on-static platform tilt. Clin Neurophysiol 2018; 129:1137-1147. [PMID: 29631169 DOI: 10.1016/j.clinph.2018.03.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 03/05/2018] [Accepted: 03/08/2018] [Indexed: 10/17/2022]
Abstract
OBJECTIVES We aimed to assess whether postural abnormalities in Progressive Supranuclear Palsy (PSP) and Idiopathic Parkinson's Disease (IPD) are qualitatively different by analysing spontaneous and reactive postural control. METHODS We assessed postural control upon platform tilts in 17 PSP, 11 IPD patients and 18 healthy control subjects using a systems analysis approach. RESULTS Spontaneous sway abnormalities in PSP resembled those of IPD patients. Spontaneous sway was smaller, slower and contained lower frequencies in both PSP and IPD as compared to healthy subjects. The amount of angular body excursions as a function of platform angular excursions (GAIN) in PSP was qualitatively different from both IPD and healthy subjects (GAIN cut-off value: 2.9, sensitivity of 94%, specificity of 72%). This effect was pronounced at the upper body level and at low as well as high frequencies. In contrast, IPD patients' stimulus-related body excursions were smaller compared to healthy subjects. Using a systems analysis approach, we were able to allocate these different postural strategies to differences in the use of sensory information as well as to different error correction efforts. CONCLUSIONS While both PSP and IPD patients show abnormal postural control, the underlying pathology seems to be different. SIGNIFICANCE The identification of disease-specific postural abnormalities shown here may be helpful for diagnostic as well as therapeutic discriminations of PSP vs. IPD.
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Affiliation(s)
- Stefan Kammermeier
- Klinikum der Universität München, Ludwig-Maximilians-Universität LMU, Neurologische Klinik und Poliklinik, Marchioninistraße 15, 81377 München, Germany.
| | - Kathrin Maierbeck
- Klinikum der Universität München, Ludwig-Maximilians-Universität LMU, Neurologische Klinik und Poliklinik, Marchioninistraße 15, 81377 München, Germany; Klinikum der Universität München, Ludwig-Maximilians-Universität LMU, Klinik für Anästhesiologie, Marchioninistraße 15, 81377 München, Germany
| | - Lucia Dietrich
- Klinikum der Universität München, Ludwig-Maximilians-Universität LMU, Neurologische Klinik und Poliklinik, Marchioninistraße 15, 81377 München, Germany; Abteilung für Allgemeinchirurgie, Kliniken Ostallgäu-Kaufbeuren, Dr.-Gutermann-Straße 2, 87600 Kaufbeuren, Germany
| | - Annika Plate
- Klinikum der Universität München, Ludwig-Maximilians-Universität LMU, Neurologische Klinik und Poliklinik, Marchioninistraße 15, 81377 München, Germany
| | - Stefan Lorenzl
- Klinikum der Universität München, Ludwig-Maximilians-Universität LMU, Neurologische Klinik und Poliklinik, Marchioninistraße 15, 81377 München, Germany; Abteilung für Neurologie, Krankenhaus Agatharied, Norbert-Kerkel-Platz, 83734 Hausham, Germany
| | - Arun Singh
- Klinikum der Universität München, Ludwig-Maximilians-Universität LMU, Neurologische Klinik und Poliklinik, Marchioninistraße 15, 81377 München, Germany; Department of Neurology, University of Iowa, Iowa, IA, United States
| | - Kai Bötzel
- Klinikum der Universität München, Ludwig-Maximilians-Universität LMU, Neurologische Klinik und Poliklinik, Marchioninistraße 15, 81377 München, Germany
| | - Christoph Maurer
- Klinik für Neurologie und Neurophysiologie, Universitätsklinikum Freiburg, Breisacher Str. 64, 79106 Freiburg im Breisgau, Germany
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Wei EX, Oh ES, Harun A, Ehrenburg M, Agrawal Y. Vestibular Loss Predicts Poorer Spatial Cognition in Patients with Alzheimer’s Disease. J Alzheimers Dis 2018; 61:995-1003. [DOI: 10.3233/jad-170751] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Eric X. Wei
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Esther S. Oh
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Aisha Harun
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Matthew Ehrenburg
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Yuri Agrawal
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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10
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Kammermeier S, Singh A, Bötzel K. Intermediate Latency-Evoked Potentials of Multimodal Cortical Vestibular Areas: Galvanic Stimulation. Front Neurol 2017; 8:587. [PMID: 29163348 PMCID: PMC5675885 DOI: 10.3389/fneur.2017.00587] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 10/20/2017] [Indexed: 11/30/2022] Open
Abstract
Introduction Human multimodal vestibular cortical regions are bilaterally anterior insulae and posterior opercula, where characteristic vestibular-related cortical potentials were previously reported under acoustic otolith stimulation. Galvanic vestibular stimulation likely influences semicircular canals preferentially. Galvanic stimulation was compared to previously established data under acoustic stimulation. Methods 14 healthy right-handed subjects, who were also included in the previous acoustic potential study, showed normal acoustic and galvanic vestibular-evoked myogenic potentials. They received 2,000 galvanic binaural bipolar stimuli for each side during EEG recording. Results Vestibular cortical potentials were found in all 14 subjects and in the pooled data of all subjects (“grand average”) bilaterally. Anterior insula and posterior operculum were activated exclusively under galvanic stimulation at 25, 35, 50, and 80 ms; frontal regions at 30 and 45 ms. Potentials at 70 ms in frontal regions and at 110 ms at all of the involved regions could also be recorded; these events were also found using acoustic stimulation in our previous study. Conclusion Galvanic semicircular canal stimulation evokes specific potentials in addition to those also found with acoustic otolith stimulation in identically located regions of the vestibular cortex. Vestibular cortical regions activate differently by galvanic and acoustic input at the peripheral sensory level. Significance Differential effects in vestibular cortical-evoked potentials may see clinical use in specific vertigo disorders.
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Affiliation(s)
- Stefan Kammermeier
- Klinikum der Universität München, Neurologische Klinik und Poliklinik, München, Germany
| | - Arun Singh
- Klinikum der Universität München, Neurologische Klinik und Poliklinik, München, Germany.,Department of Neurology, University of Iowa, Iowa, IA, United States
| | - Kai Bötzel
- Klinikum der Universität München, Neurologische Klinik und Poliklinik, München, Germany
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Ertl M, Moser M, Boegle R, Conrad J, zu Eulenburg P, Dieterich M. The cortical spatiotemporal correlate of otolith stimulation: Vestibular evoked potentials by body translations. Neuroimage 2017; 155:50-59. [DOI: 10.1016/j.neuroimage.2017.02.044] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 02/15/2017] [Accepted: 02/15/2017] [Indexed: 12/01/2022] Open
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Todd NPM, Govender S, Colebatch JG. Vestibular-dependent inter-stimulus interval effects on sound evoked potentials of central origin. Hear Res 2016; 341:190-201. [PMID: 27498399 PMCID: PMC5090052 DOI: 10.1016/j.heares.2016.07.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 07/04/2016] [Accepted: 07/27/2016] [Indexed: 11/28/2022]
Abstract
Todd et al. (2014ab) have recently demonstrated the presence of vestibular-dependent contributions to auditory evoked potentials (AEPs) when passing through the vestibular threshold as determined by vestibular evoked myogenic potentials (VEMPs), including a particular deflection labeled as an N42/P52 prior to the long-latency AEPs N1 and P2. In this paper we report the results of an experiment to determine the effect of inter-stimulus interval (ISI) and regularity on potentials recorded above and below VEMP threshold. Five healthy, right-handed subjects were recruited and evoked potentials were recorded to binaurally presented sound stimulation, above and below vestibular threshold, at seven stimulus rates with ISIs of 212, 300, 424, 600, 848, 1200 and 1696 ms. The inner five intervals, i.e. 300, 424, 600, 848, 1200 ms, were presented twice in both regular and irregular conditions. ANOVA on the global field power (GFP) were conducted for each of four waves, N42, P52, N1 and P2 with factors of intensity, ISI and regularity. Both N42 and P52 waves showed significant ANOVA effects of intensity but no other main effects or interactions. In contrast both N1 and P2 showed additional effects of ISI, as well as intensity, and evidence of non-linear interactions between ISI and intensity. A source analysis was carried out consistent with prior work suggesting that when above vestibular threshold, in addition to bilateral superior temporal cortex, ocular, cerebellar and cingulate sources are recruited. Further statistical analysis of the source currents indicated that the origin of the interactions with intensity may be the ISI sensitivity of the vestibular-dependent sources. This in turn may reflect a specific vestibular preference for stimulus rates associated with locomotion, i.e. rates close to 2 Hz, or ISIs close to 500 ms, where saccular afferents show increased gain and the corresponding reflexes are most sensitive.
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Affiliation(s)
- N P M Todd
- Department of Psychology, University of Exeter, Exeter EX4 4QG, UK.
| | - S Govender
- Prince of Wales Clinical School and Neuroscience Research Australia, University of New South Wales, Randwick, Sydney, NSW 2052, Australia
| | - J G Colebatch
- Prince of Wales Clinical School and Neuroscience Research Australia, University of New South Wales, Randwick, Sydney, NSW 2052, Australia
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Bigelow RT, Semenov YR, Trevino C, Ferrucci L, Resnick SM, Simonsick EM, Xue QL, Agrawal Y. Association Between Visuospatial Ability and Vestibular Function in the Baltimore Longitudinal Study of Aging. J Am Geriatr Soc 2015; 63:1837-44. [PMID: 26311169 DOI: 10.1111/jgs.13609] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
OBJECTIVES To investigate the relationship between vestibular loss associated with aging and age-related decline in visuospatial function. DESIGN Cross-sectional analysis within a prospective cohort study. SETTING Baltimore Longitudinal Study of Aging (BLSA). PARTICIPANTS Community-dwelling BLSA participants with a mean age of 72 (range 26-91) (N = 183). MEASUREMENTS Vestibular function was measured using vestibular-evoked myogenic potentials. Visuospatial cognitive tests included Card Rotations, Purdue Pegboard, Benton Visual Retention Test, and Trail-Making Test Parts A and B. Tests of executive function, memory, and attention were also considered. RESULTS Participants underwent vestibular and cognitive function testing. In multiple linear regression analyses, poorer vestibular function was associated with poorer performance on Card Rotations (P = .001), Purdue Pegboard (P = .005), Benton Visual Retention Test (P = 0.008), and Trail-Making Test Part B (P = .04). Performance on tests of executive function and verbal memory were not significantly associated with vestibular function. Exploratory factor analyses in a subgroup of participants who underwent all cognitive tests identified three latent cognitive abilities: visuospatial ability, verbal memory, and working memory and attention. Vestibular loss was significantly associated with lower visuospatial and working memory and attention factor scores. CONCLUSION Significant consistent associations between vestibular function and tests of visuospatial ability were observed in a sample of community-dwelling adults. Impairment in visuospatial skills is often one of the first signs of dementia and Alzheimer's disease. Further longitudinal studies are needed to evaluate whether the relationship between vestibular function and visuospatial ability is causal.
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Affiliation(s)
- Robin T Bigelow
- Department of Otolaryngology - Head and Neck Surgery, School of Medicine, Johns Hopkins University, Baltimore, Maryland
| | - Yevgeniy R Semenov
- Department of Otolaryngology - Head and Neck Surgery, School of Medicine, Johns Hopkins University, Baltimore, Maryland
| | - Carolina Trevino
- Department of Otolaryngology - Head and Neck Surgery, School of Medicine, Johns Hopkins University, Baltimore, Maryland
| | - Luigi Ferrucci
- Longitudinal Studies Section, Clinical Research Branch, National Institute on Aging, National Institutes of Health, Baltimore, Maryland
| | - Susan M Resnick
- Laboratory of Behavioral Neuroscience, Intramural Research Program, National Institutes of Health, Baltimore, Maryland
| | - Eleanor M Simonsick
- Longitudinal Studies Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, Maryland
| | - Qian-Li Xue
- Department of Medicine, School of Medicine, Johns Hopkins University, Baltimore, Maryland.,Center on Aging and Health, Johns Hopkins Medical Institutions, Baltimore, Maryland
| | - Yuri Agrawal
- Department of Otolaryngology - Head and Neck Surgery, School of Medicine, Johns Hopkins University, Baltimore, Maryland
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