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Flasbeck V, Hirsch J, Petrak F, Meier JJ, Herpertz S, Gatermann S, Juckel G. Microbiome composition and central serotonergic activity in patients with depression and type 1 diabetes. Eur Arch Psychiatry Clin Neurosci 2024; 274:1177-1186. [PMID: 37847374 PMCID: PMC11226557 DOI: 10.1007/s00406-023-01694-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 09/20/2023] [Indexed: 10/18/2023]
Abstract
The role of gut-brain axis functioning gains growing attention in research on the pathophysiology of major depressive disorders. Here, especially consequences of altered microbiota composition on tryptophan metabolism resulting in altered serotonergic neurotransmission in the central nervous system (CNS) have reached a central position. Previous research, however, mainly focused on either microbiota and peripheral serotonin levels or central serotonergic neurotransmission. The present study aimed to combine the analysis of microbiota composition and central serotonergic activity using a valid neurophysiological indicator. We recruited 19 adult patients with type 1 diabetes and depression (D + D; 7 males), 19 patients with type 1 diabetes (D-; 7 male), and 20 healthy participants (HC; 7 males). Next to the analysis of fecal microbiota regarding α- and β-diversity, the loudness dependence of auditory evoked potential (LDAEP) was investigated, a non-invasive measurement of central serotonergic activity. High α-diversity was associated with high LDAEP, i.e., low serotonergic activity, in patients with diabetes and additional depression. Furthermore, relative abundances of bacterial families belonging to Bacteroidetes, Proteobacteria and Firmicutes were shown to have an impact on central serotonergic activity. This finding was supported by a tendency indicating an association of central serotonergic activity with the Bacteroidetes-Firmicutes ratio in both patients' groups. Together, this data suggests that the guts' microbiota composition might play an important role in regulating the central serotonergic activity in the brain.
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Affiliation(s)
- Vera Flasbeck
- Department of Psychiatry, LWL-University Hospital, Ruhr University Bochum, Bochum, Germany
| | - Julia Hirsch
- Department of Psychosomatic Medicine and Psychotherapy, LWL-University Hospital, Ruhr-University Bochum, Alexandrinenstr.1, 44791, Bochum, Germany
| | - Frank Petrak
- Department of Psychosomatic Medicine and Psychotherapy, LWL-University Hospital, Ruhr-University Bochum, Alexandrinenstr.1, 44791, Bochum, Germany
| | - Juris J Meier
- Diabetes Division, Katholisches Klinikum Bochum, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - Stephan Herpertz
- Department of Psychosomatic Medicine and Psychotherapy, LWL-University Hospital, Ruhr-University Bochum, Alexandrinenstr.1, 44791, Bochum, Germany
| | - Sören Gatermann
- German National Reference Centre for Multidrug-Resistant Gram-Negative Bacteria, Department of Medical Microbiology, Ruhr-University Bochum, Bochum, Germany
| | - Georg Juckel
- Department of Psychiatry, LWL-University Hospital, Ruhr University Bochum, Bochum, Germany.
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Randau M, Reinholt N, Pernet C, Oranje B, Rasmussen BS, Arnfred S. Robust single-trial event-related potentials differentiate between distress and fear disorders. Psychophysiology 2024; 61:e14500. [PMID: 38073133 DOI: 10.1111/psyp.14500] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 10/24/2023] [Accepted: 11/21/2023] [Indexed: 04/17/2024]
Abstract
Recent evidence indicates that measures of brain functioning as indexed by event-related potentials (ERPs) on the electroencephalogram align more closely to transdiagnostic measures of psychopathology than to categorical taxonomies. The Hierarchical Taxonomy of Psychopathology (HiTOP) is a transdiagnostic, dimensional framework aiming to solve issues of comorbidity, symptom heterogeneity, and arbitrary diagnostic boundaries. Based on shared features, the emotional disorders are allocated into subfactors Distress and Fear. Evidence indicates that disorders that are close in the HiTOP hierarchy share etiology, symptom profiles, and treatment outcomes. However, further studies testing the biological underpinnings of the HiTOP are called for. In this study, we assessed differences between Distress and Fear in a range of well-studied ERP components. In total, 50 patients with emotional disorders were divided into two groups (Distress, N = 25; Fear, N = 25) according to HiTOP criteria and compared against 37 healthy comparison (HC) subjects. Addressing issues in traditional ERP preprocessing and analysis methods, we applied robust single-trial analysis as implemented in the EEGLAB toolbox LIMO EEG. Several ERP components were found to differ between the groups. Surprisingly, we found no difference between Fear and HC for any of the ERPs. This suggests that some well-established results from the literature, e.g., increased error-related negativity in OCD, are not a shared neurobiological correlate of the Fear subfactor. Conversely, for Distress, we found reductions compared to Fear and HC in several ERP components across paradigms. Future studies could utilize HiTOP-validated psychopathology measures to more precisely define subfactor groups.
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Affiliation(s)
- Martin Randau
- Research Unit for Psychotherapy & Psychopathology, Mental Health Service West, Copenhagen University Hospital - Psychiatry Region Zealand, Slagelse, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Nina Reinholt
- Psychiatric Research Unit, Copenhagen University Hospital - Psychiatry Region Zealand, Slagelse, Denmark
| | - Cyril Pernet
- Neurobiology Research Unit, Copenhagen University Hospital, Copenhagen, Denmark
| | - Bob Oranje
- Center for Neuropsychiatric Schizophrenia Research (CNSR), Center for Clinical Intervention and Neuropsychiatric Schizophrenia Research (CINS), Copenhagen University Hospital, Copenhagen, Denmark
| | - Belinda S Rasmussen
- Psychiatric Research Unit, Copenhagen University Hospital - Psychiatry Region Zealand, Slagelse, Denmark
| | - Sidse Arnfred
- Research Unit for Psychotherapy & Psychopathology, Mental Health Service West, Copenhagen University Hospital - Psychiatry Region Zealand, Slagelse, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Psychiatric Research Unit, Copenhagen University Hospital - Psychiatry Region Zealand, Slagelse, Denmark
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Fitzgerald PJ. Affective disorders and the loudness dependence of the auditory evoked potential: Serotonin and beyond. Neurosci Lett 2024; 827:137734. [PMID: 38499279 DOI: 10.1016/j.neulet.2024.137734] [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] [Received: 01/10/2024] [Revised: 03/13/2024] [Accepted: 03/15/2024] [Indexed: 03/20/2024]
Abstract
Identifying additional noninvasive biomarkers for affective disorders, such as unipolar major depressive disorder (MDD) and bipolar disorder (BD), could aid in the diagnosis and treatment of these prevalent and debilitating neuropsychiatric conditions. One such candidate biomarker is the loudness dependence of the auditory evoked potential (LDAEP), an event-related potential that measures responsiveness of the auditory cortex to different intensities of sound. The LDAEP has been associated with MDD and BD, including therapeutic response to particular classes of antidepressant drugs, while also correlating with several other neuropsychiatric disorders. It has been suggested that increased values of the LDAEP indicate low central serotonergic neurotransmission, further implicating this EEG measure in depression. Here, we briefly review the literature on the LDAEP in affective disorders, including its association with serotonergic signaling, as well as with that of other neurotransmitters such as dopamine. We summarize key findings on the LDAEP and the genetics of these neurotransmitters, as well as prediction of response to particular classes of antidepressants in MDD, including SSRIs versus noradrenergic agents. The possible relationship between this EEG measure and suicidality is addressed. We also briefly analyze acute pharmacologic studies of serotonin and/or dopamine precursor depletion and the LDAEP. In conclusion, the existing literature suggests that serotonin and norepinephrine may modulate the LDAEP in an opposing manner, and that this event-related marker may be of use in predicting response to chronic treatment with particular pharmacologic agents in the context of affective disorders, such as MDD and BD, including in the presence of suicidality.
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Affiliation(s)
- Paul J Fitzgerald
- Department of Psychological Sciences, Purdue University, West Lafayette, IN, USA.
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Sklar AL, Matinrazm S, Ren X, Chlpka L, Curtis M, Coffman BA, Salisbury DF. Longitudinal Investigation of Auditory Dynamic Range Deficits in Early Psychosis and its Relationship to Negative Symptoms. Schizophr Bull 2023; 49:1508-1517. [PMID: 37260356 PMCID: PMC10686334 DOI: 10.1093/schbul/sbad072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND AND HYPOTHESIS Despite accounting for significant disease morbidity in schizophrenia, the neuropathological basis of negative symptoms remains poorly understood and options for treatment limited. Our recent study identified robust associations between diminished auditory cortex (AC) dynamic range and social functioning impairments and negative symptoms in first episode psychosis (FESz). The current investigation examined the progression of these relationships 4-8 months from baseline testing. STUDY DESIGN Twenty-six FESz and 38 healthy controls (HC) were tested at baseline and follow-up. Magnetoencephalography (MEG) was recorded during binaural presentation of tones (75, 80, and 85 dB). Assessments included the MATRICS cognitive consensus battery (MCCB) and Global Functioning: Role and Social scales (GFR/GFS) and the Positive and Negative Syndrome Scale. STUDY RESULTS Overall, FESz exhibited a blunted response to increasing tone intensity relative to HC. While this deficit did not change over time at the group level, recovery of right hemisphere AC dynamic range (85-75 dB response) among FESz individuals was associated with reductions in negative symptoms (ρ = -0.50). Diminished dynamic range was also associated with impaired GFS (ρ = 0.65), GFR (ρ = 0.51), and MCCB (ρ = 0.49) at baseline and increased negative symptoms at baseline (ρ = -0.53) and follow-up (ρ = -0.51). CONCLUSION Despite persistent dynamic range impairment in FESz as a group, individual recovery of this AC response property was associated with significant reduction in negative symptoms. Identification of a functional neural deficit that tracts progression of negative symptoms during a critical period for disease modification is essential to the management of these devastating and historically treatment refractory symptoms.
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Affiliation(s)
- Alfredo L Sklar
- University of Pittsburgh School of Medicine, Department of Psychiatry Pittsburgh, PA
| | - Sayna Matinrazm
- University of Pittsburgh School of Medicine, Department of Psychiatry Pittsburgh, PA
| | - Xi Ren
- University of Pittsburgh School of Medicine, Department of Psychiatry Pittsburgh, PA
| | - Lydia Chlpka
- University of Pittsburgh School of Medicine, Department of Psychiatry Pittsburgh, PA
| | - Mark Curtis
- University of Pittsburgh School of Medicine, Department of Psychiatry Pittsburgh, PA
| | - Brian A Coffman
- University of Pittsburgh School of Medicine, Department of Psychiatry Pittsburgh, PA
| | - Dean F Salisbury
- University of Pittsburgh School of Medicine, Department of Psychiatry Pittsburgh, PA
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Muñoz V, Muñoz-Caracuel M, Angulo-Ruiz BY, Gómez CM. Neurovascular coupling during auditory stimulation: event-related potentials and fNIRS hemodynamic. Brain Struct Funct 2023; 228:1943-1961. [PMID: 37658858 PMCID: PMC10517045 DOI: 10.1007/s00429-023-02698-9] [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: 04/17/2023] [Accepted: 08/12/2023] [Indexed: 09/05/2023]
Abstract
Intensity-dependent amplitude changes (IDAP) have been extensively studied using event-related potentials (ERPs) and have been linked to several psychiatric disorders. This study aims to explore the application of functional near-infrared spectroscopy (fNIRS) in IDAP paradigms, which related to ERPs could indicate the existence of neurovascular coupling. Thirty-three and thirty-one subjects participated in two experiments, respectively. The first experiment consisted of the presentation of three-tone intensities (77.9 dB, 84.5 dB, and 89.5 dB) lasting 500 ms, each type randomly presented 54 times, while the second experiment consisted of the presentation of five-tone intensities (70.9 dB, 77.9 dB, 84.5 dB, 89.5 dB, and 94.5 dB) in trains of 8 tones lasting 70 ms each tone, the trains were presented 20 times. EEG was used to measure ERP components: N1, P2, and N1-P2 peak-to-peak amplitude. fNIRS allowed the analysis of the hemodynamic activity in the auditory, visual, and prefrontal cortices. The results showed an increase in N1, P2, and N1-P2 peak-to-peak amplitude with auditory intensity. Similarly, oxyhemoglobin and deoxyhemoglobin concentrations showed amplitude increases and decreases, respectively, with auditory intensity in the auditory and prefrontal cortices. Spearman correlation analysis showed a relationship between the left auditory cortex with N1 amplitude, and the right dorsolateral cortex with P2 amplitude, specifically for deoxyhemoglobin concentrations. These findings suggest that there is a brain response to auditory intensity changes that can be obtained by EEG and fNIRS, supporting the neurovascular coupling process. Overall, this study enhances our understanding of fNIRS application in auditory paradigms and highlights its potential as a complementary technique to ERPs.
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Affiliation(s)
- Vanesa Muñoz
- Human Psychobiology Laboratory, Experimental Psychology Department, University of Sevilla, Seville, Spain
| | - Manuel Muñoz-Caracuel
- Human Psychobiology Laboratory, Experimental Psychology Department, University of Sevilla, Seville, Spain
- Hospital Universitario Virgen del Rocio, Seville, Spain
| | - Brenda Y. Angulo-Ruiz
- Human Psychobiology Laboratory, Experimental Psychology Department, University of Sevilla, Seville, Spain
| | - Carlos M. Gómez
- Human Psychobiology Laboratory, Experimental Psychology Department, University of Sevilla, Seville, Spain
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Sklar AL, Ren X, Chlpka L, Curtis M, Coffman BA, Salisbury DF. Diminished Auditory Cortex Dynamic Range and its Clinical Correlates in First Episode Psychosis. Schizophr Bull 2023; 49:679-687. [PMID: 36749310 PMCID: PMC10154701 DOI: 10.1093/schbul/sbac208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND HYPOTHESIS There is growing appreciation for the contribution of sensory disruptions to disease morbidity in psychosis. The present study examined auditory cortex (AC) dynamic range: the scaling of neurophysiological responses to stimulus intensity, among individuals with a schizophrenia spectrum illness (FESz) and its relationship to clinical outcomes at disease onset. STUDY DESIGN Magnetoencephalography (MEG) was recorded from 35 FESz and 40 healthy controls (HC) during binaural presentation of tones at three intensities (75 dB, 80 dB, and 85 dB). MRIs were obtained to enhance cortical localization of MEG sensor-level activity. All participants completed the MATRICS cognitive battery (MCCB) and Global Functioning: Role and Social scales (GFR/GFS). Patients were administered the Positive and Negative Syndrome Scale (PANSS). STUDY RESULTS FESz exhibited reduced AC response relative to HC. Enhancement of AC activity to tones of increasing intensity was blunted in FESz relative to HC. Reduced dynamic range (85-75 dB AC response) was associated with lower GFS (r = .58) and GFR (r = .45) scores, worse MCCB performance (r = .45), and increased PANSS Negative symptom subscale scores (r = -.55) among FESz, relationships not observed with AC responses to individual tones. CONCLUSION Beyond an impaired AC response to pure tones, FESz exhibit reduced dynamic range relative to HC. This impairment was correlated with markers of disease morbidity including poorer community functioning as well as cognitive and negative symptoms. The relationship with impaired social functioning may reflect the role of AC dynamic range in decoding the emotional content of language and highlights its importance to future therapeutic sensory remediation protocols.
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Affiliation(s)
- Alfredo L Sklar
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Xi Ren
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Laureate Institute for Brain Research, Tulsa, OK, USA
| | - Lydia Chlpka
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- College of Medicine, Northeast Ohio Medical University, Rootstown, OH, USA
| | - Mark Curtis
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Department of Psychological and Brain Sciences, Washington University, St. Louis, MO, USA
| | - Brian A Coffman
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Dean F Salisbury
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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Can AT, Schwenn PE, Isbel B, Beaudequin D, Bouças AP, Dutton M, Jones M, Gallay CC, Forsyth G, Bennett MR, Lagopoulos J, Hermens DF. Electrophysiological phenotypes of suicidality predict prolonged response to oral ketamine treatment. Prog Neuropsychopharmacol Biol Psychiatry 2023; 123:110701. [PMID: 36565983 DOI: 10.1016/j.pnpbp.2022.110701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 12/16/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
Oral ketamine has shown to be a rapid-acting antidepressant and a potential treatment option for suicidality, however, repeated doses are often required. Objective markers of prolonged treatment response are needed to help individuals and clinicians make informed treatment decisions. This secondary analysis sought to identify objective electrophysiological predictors of both prolonged response and dose sensitivity to low-dose oral ketamine in people with chronic suicidality. Individuals with a Beck Scale for Suicide Ideation total score (BSS) ≥ 6 (N = 29) completed a six-week ketamine treatment, pre-treatment electroencephalography and follow-up assessment of suicidality (four weeks from the final ketamine dose). Prolonged response was observed in 52% of participants (follow-up BSS reduced by 50% or ≤6); nearly half were prolonged non-responders. There was decisive evidence for a predictive Bayesian linear regression model with follow-up BSS score as the response variable and pre-treatment auditory evoked power bands as predictors (theta, alpha and beta frequencies, BF10 = 17,948, R2 = 0.70). A Bayesian one-way ANOVA indicated strong evidence for a model of positive association between auditory evoked power and ketamine dose sensitivity (theta-alpha BF+0 = 108, effect size δ = 1.3, 95% CI 0.5-2.1; high-beta BF+0 = 7.4, δ = 0.8, 95% CI 0.1-1.6). Given auditory evoked power may index serotonin neurotransmission, these results suggest that a prolonged response to ketamine may, in part, be mediated by pre-treatment serotonergic functioning. In addition, the observed beta power differences may arise from GABAergic functioning. These suicidality phenotypes, identifiable by pre-treatment electrophysiology, may aid diagnosis, treatment selection and prediction of prolonged treatment outcome.
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Affiliation(s)
- Adem T Can
- Thompson Institute, University of the Sunshine Coast, Birtinya, Queensland, Australia
| | - Paul E Schwenn
- Thompson Institute, University of the Sunshine Coast, Birtinya, Queensland, Australia
| | - Ben Isbel
- Thompson Institute, University of the Sunshine Coast, Birtinya, Queensland, Australia
| | - Denise Beaudequin
- Thompson Institute, University of the Sunshine Coast, Birtinya, Queensland, Australia
| | - Ana P Bouças
- Thompson Institute, University of the Sunshine Coast, Birtinya, Queensland, Australia
| | - Megan Dutton
- Thompson Institute, University of the Sunshine Coast, Birtinya, Queensland, Australia
| | - Monique Jones
- Thompson Institute, University of the Sunshine Coast, Birtinya, Queensland, Australia
| | - Cyrana C Gallay
- Thompson Institute, University of the Sunshine Coast, Birtinya, Queensland, Australia
| | - Grace Forsyth
- Thompson Institute, University of the Sunshine Coast, Birtinya, Queensland, Australia
| | | | - Jim Lagopoulos
- Thompson Institute, University of the Sunshine Coast, Birtinya, Queensland, Australia
| | - Daniel F Hermens
- Thompson Institute, University of the Sunshine Coast, Birtinya, Queensland, Australia.
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Takeuchi N, Fujita K, Taniguchi T, Kinukawa T, Sugiyama S, Kanemoto K, Nishihara M, Inui K. Mechanisms of Short- and Long-Latency Sensory Suppression: Magnetoencephalography Study. Neuroscience 2023; 514:92-99. [PMID: 36435478 DOI: 10.1016/j.neuroscience.2022.11.016] [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: 05/24/2022] [Revised: 11/13/2022] [Accepted: 11/17/2022] [Indexed: 11/24/2022]
Abstract
Prepulse inhibition (PPI) is sensory suppression whose mechanism (i.e., whether PPI originates from specific inhibitory mechanisms) remains unclear. In this study, we applied the combination of short-latency PPI and long-latency paired pulse suppression in 17 healthy subjects using magnetoencephalography to investigate the mechanisms of sensory suppression. Repeats of a 25-ms pure tone without a blank at 800 Hz and 70 dB were used for a total duration of 1600 ms. To elicit change-related cortical responses, the sound pressure of two consecutive tones in this series at 1300 ms was increased to 80 dB (Test). For the conditioning stimuli, the sound pressure was increased to 73 dB at 1250 ms (Pre 1) and 80 dB at 700 ms (Pre 2). Six stimuli were randomly presented as follows: (1) Test alone, (2) Pre 1 alone, (3) Pre 1 + Test, (4) Pre 2 + Test, (5) Pre 2 + Pre 1, and (6) Pre 2 + Pre 1 + Test. The inhibitory effects of the conditioning stimuli were evaluated using N100m/P200m components. The results showed that both Pre 1 and Pre 2 significantly suppressed the Test response. Moreover, the inhibitory effects of Pre 1 and Pre 2 were additive. However, when both prepulses were present, Pre 2 significantly suppressed the Pre 1 response, suggesting that the Pre 1 response amplitude was not a determining factor for the degree of suppression. These results suggested that the suppression originated from a specific inhibitory circuit independent of the excitatory pathway.
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Affiliation(s)
- Nobuyuki Takeuchi
- Neuropsychiatric Department, Aichi Medical University, Nagakute 480-1195, Japan; Department of Psychiatry, Okazaki City Hospital, Okazaki 444-8553, Japan.
| | - Kohei Fujita
- Neuropsychiatric Department, Aichi Medical University, Nagakute 480-1195, Japan
| | - Tomoya Taniguchi
- Department of Anesthesiology, Nagoya University, Nagoya 466-8550, Japan
| | - Tomoaki Kinukawa
- Department of Anesthesiology, Nagoya University, Nagoya 466-8550, Japan
| | - Shunsuke Sugiyama
- Department of Psychiatry and Psychotherapy, Gifu University, Gifu 501-1193, Japan
| | - Kousuke Kanemoto
- Neuropsychiatric Department, Aichi Medical University, Nagakute 480-1195, Japan
| | - Makoto Nishihara
- Neuropsychiatric Department, Aichi Medical University, Nagakute 480-1195, Japan; Multidisciplinary Pain Center, Aichi Medical University, Nagakute 480-1195, Japan
| | - Koji Inui
- Department of Functioning and Disability, Institute for Developmental Research, Aichi Developmental Disability Center, Kasugai 480-0392, Japan
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Ip CT, Ganz M, Ozenne B, Olbrich S, Beliveau V, Dam VH, Köhler-Forsberg K, Jørgensen MB, Frøkjær VG, Knudsen GM. Association between the loudness dependence of auditory evoked potential, serotonergic neurotransmission and treatment outcome in patients with depression. Eur Neuropsychopharmacol 2023; 70:32-44. [PMID: 36863106 DOI: 10.1016/j.euroneuro.2023.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 02/06/2023] [Accepted: 02/08/2023] [Indexed: 03/04/2023]
Abstract
Previous studies have suggested that the loudness dependence of auditory evoked potential (LDAEP) is associated with the effectiveness of antidepressant treatment in patients with major depressive disorders (MDD). Furthermore, both LDAEP and the cerebral serotonin 4 receptor (5-HT4R) density is inversely related to brain serotonin levels. We included 84 patients with MDD and 22 healthy controls to examined the association between LDAEP and treatment response and its association with cerebral 5-HT4R density. Participants underwent both EEG and 5-HT4R neuroimaging with [11C]SB207145 PET. Thirty-nine patients with MDD were re-examined after 8 weeks of treatment with selective serotonin reuptake inhibitors/serotonin noradrenaline reuptake inhibitor (SSRI/SNRI). We found that the cortical source of LDAEP was higher in untreated patients with MDD compared to healthy controls (p=0.03). Prior to SSRI/SNRI treatment, subsequent treatment responders had a negative association between LDAEP and depressive symptoms and a positive association between scalp LDAEP and symptom improvement at week 8. This was not found in source LDAEP. In healthy controls, we found a positive correlation between both scalp and source LDAEP and cerebral 5-HT4R binding but that was not observed in patients with MDD. We did not see any changes in scalp and source LDAEP in response to SSRI/SNRI treatment. These results support a theoretical framework where both LDAEP and cerebral 5-HT4R are indices of cerebral 5-HT levels in healthy individuals while this association seems to be disrupted in MDD. The combination of the two biomarkers may be useful for stratifying patients with MDD. Clinical Trials Registration:https://clinicaltrials.gov/ct2/show/NCT02869035?draw=1Registration number: NCT0286903.
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Affiliation(s)
- Cheng-Teng Ip
- Neurobiology Research Unit and NeuroPharm, University Hospital Rigshospitalet, Copenhagen, Denmark; Center for Cognitive and Brain Sciences, University of Macau, Taipa, Macau SAR, China
| | - Melanie Ganz
- Neurobiology Research Unit and NeuroPharm, University Hospital Rigshospitalet, Copenhagen, Denmark; Department of Computer Science, University of Copenhagen, Copenhagen, Denmark
| | - Brice Ozenne
- Neurobiology Research Unit and NeuroPharm, University Hospital Rigshospitalet, Copenhagen, Denmark; Department of Public Health, Section of Biostatistics, University of Copenhagen, Denmark
| | - Sebastian Olbrich
- Department for Psychiatry, Psychotherapy and Psychosomatic, University Zurich, Switzerland
| | - Vincent Beliveau
- Neurobiology Research Unit and NeuroPharm, University Hospital Rigshospitalet, Copenhagen, Denmark; Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Vibeke H Dam
- Neurobiology Research Unit and NeuroPharm, University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Kristin Köhler-Forsberg
- Neurobiology Research Unit and NeuroPharm, University Hospital Rigshospitalet, Copenhagen, Denmark; Department of Psychiatry, Psychiatric Centre Copenhagen, Copenhagen, Denmark
| | - Martin B Jørgensen
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; Department of Psychiatry, Psychiatric Centre Copenhagen, Copenhagen, Denmark
| | - Vibe G Frøkjær
- Neurobiology Research Unit and NeuroPharm, University Hospital Rigshospitalet, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; Department of Psychiatry, Psychiatric Centre Copenhagen, Copenhagen, Denmark
| | - Gitte M Knudsen
- Neurobiology Research Unit and NeuroPharm, University Hospital Rigshospitalet, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark.
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Key AP, Thornton-Wells TA, Smith DG. Electrophysiological biomarkers and age characterize phenotypic heterogeneity among individuals with major depressive disorder. Front Hum Neurosci 2023; 16:1055685. [PMID: 36699961 PMCID: PMC9870293 DOI: 10.3389/fnhum.2022.1055685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 12/02/2022] [Indexed: 01/11/2023] Open
Abstract
Introduction: Despite the high need for effective treatments for major depressive disorder (MDD), the development of novel medicines is hampered by clinical, genetic and biological heterogeneity, unclear links between symptoms and neural dysfunction, and tenuous biomarkers for clinical trial contexts of use. Methods: In this study, we examined the International Study to Predict Optimized Treatment in Depression (iSPOT-D) clinical trial database for new relationships between auditory event-related potential (ERP) responses, demographic features, and clinical symptoms and behavior, to inform strategies for biomarker-driven patient stratification that could be used to optimize future clinical trial design and drug development strategy in MDD. Results: We replicate findings from previous analyses of the classic auditory oddball task in the iSPOT-D sample showing smaller than typical N1 and P300 response amplitudes and longer P300 latencies for target and standard stimuli in patients with MDD, suggesting altered bottom-up sensory and top-down attentional processes. We further demonstrate that age is an important contributor to clinical group differences, affecting both topographic distribution of the clinically informative ERP responses and the types of the stimuli sensitive to group differences. In addition, the observed brain-behavior associations indicate that levels of anxiety and stress are major contributing factors to atypical sensory and attentional processing among patients with MDD, particularly in the older subgroups. Discussion: Our novel findings support the possibility of accelerated cognitive aging in patients with MDD and identify the frontal P300 latency as an additional candidate biomarker of MDD. These results from a large, well-phenotyped sample support the view that heterogeneity of the clinical population with MDD can be systematically characterized based on age and neural biomarkers of sensory and attentional processing, informing patient stratification strategies in the design of clinical trials.
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Affiliation(s)
- Alexandra P. Key
- Department of Hearing and Speech Sciences, Vanderbilt University Medical Center, Nashville, TN, United States,*Correspondence: Alexandra P. Key
| | - Tricia A. Thornton-Wells
- Translational Medicine, Pharmaceutical and Early-Stage Clinical Development, Alkermes, Inc., Waltham, MA, United States
| | - Daniel G. Smith
- Translational Medicine, Pharmaceutical and Early-Stage Clinical Development, Alkermes, Inc., Waltham, MA, United States
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11
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Fujita K, Takeuchi N, Sugiyama S, Inui K, Fujita Y, Yamaba A, Kamiya T, Kanemoto K, Nishihara M. Relationship of loudness-dependent auditory evoked potentials with change-related cortical responses. PLoS One 2022; 17:e0277153. [PMID: 36342917 PMCID: PMC9639826 DOI: 10.1371/journal.pone.0277153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 10/20/2022] [Indexed: 11/09/2022] Open
Abstract
Previous studies have suggested that change-related cortical responses are phenomena similar to the onset response and could be applied to the loudness dependence of auditory evoked potential (LDAEP) paradigm. In the present study, we examined the relationship between LDAEP and the change-related response using electroencephalography findings in 50 healthy subjects. There were five conditions (55, 65, 75, 85, and 95 dB) for LDAEP and five similar conditions (abrupt sound pressure increase from 70 to 75, 80, 85, 90, and 95 dB) for the change-related response. Both the onset and abrupt sound pressure increase evoked a triphasic response with peaks at approximately 50 (P50), 100 (N100), and 200 (P200) ms. We calculated the peak-to-peak amplitudes for P50/N100 and N100/P200. Medians and slopes for P50/N100 and N100/P200 amplitudes were calculated and compared between the two measures. Results revealed a significant correlation for both the slope and median for P50/N100 (r = 0.36, 0.37, p = 1.0 × 10−2, 7.9 × 10−3), N100/P200 (r = 0.40, 0.34, p = 4.0 × 10−3, 1.6 × 10−2), and P50/N100/P200 (r = 0.36, 0.35, p = 1.0 × 10−2, 1.3 × 10−2). These results suggested that the change-related response and LDAEP shared generation mechanisms at least partially.
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Affiliation(s)
- Kohei Fujita
- Neuropsychiatric Department, Aichi Medical University, Nagakute, Japan
- * E-mail:
| | | | - Shunsuke Sugiyama
- Department of Psychiatry and Psychotherapy, Gifu University, Gifu, Japan
| | - Koji Inui
- Department of Integrative Physiology, National Institute for Physiological Sciences, Okazaki, Japan
- Department of Functioning and Disability, Institute for Developmental Research, Aichi Developmental Disability Center, Kasugai, Japan
| | - Yuki Fujita
- Central clinical laboratory, Aichi medical university Hospital, Nagakute, Japan
| | - Ami Yamaba
- Central clinical laboratory, Aichi medical university Hospital, Nagakute, Japan
| | - Taeko Kamiya
- Central clinical laboratory, Aichi medical university Hospital, Nagakute, Japan
| | - Kousuke Kanemoto
- Neuropsychiatric Department, Aichi Medical University, Nagakute, Japan
| | - Makoto Nishihara
- Neuropsychiatric Department, Aichi Medical University, Nagakute, Japan
- Department of Psychiatry, Kamibayashi memorial Hospital, Ichinomiya, Japan
- Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Japan
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12
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Pinotsis DA, Fitzgerald S, See C, Sementsova A, Widge AS. Toward biophysical markers of depression vulnerability. Front Psychiatry 2022; 13:938694. [PMID: 36329919 PMCID: PMC9622949 DOI: 10.3389/fpsyt.2022.938694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 09/22/2022] [Indexed: 11/13/2022] Open
Abstract
A major difficulty with treating psychiatric disorders is their heterogeneity: different neural causes can lead to the same phenotype. To address this, we propose describing the underlying pathophysiology in terms of interpretable, biophysical parameters of a neural model derived from the electroencephalogram. We analyzed data from a small patient cohort of patients with depression and controls. Using DCM, we constructed biophysical models that describe neural dynamics in a cortical network activated during a task that is used to assess depression state. We show that biophysical model parameters are biomarkers, that is, variables that allow subtyping of depression at a biological level. They yield a low dimensional, interpretable feature space that allowed description of differences between individual patients with depressive symptoms. They could capture internal heterogeneity/variance of depression state and achieve significantly better classification than commonly used EEG features. Our work is a proof of concept that a combination of biophysical models and machine learning may outperform earlier approaches based on classical statistics and raw brain data.
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Affiliation(s)
- D. A. Pinotsis
- Centre for Mathematical Neuroscience and Psychology, Department of Psychology, City, University of London, London, United Kingdom
- The Picower Institute for Learning and Memory, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States
| | - S. Fitzgerald
- Centre for Mathematical Neuroscience and Psychology, Department of Psychology, City, University of London, London, United Kingdom
| | - C. See
- Department of Computer Science, City, University of London, London, United Kingdom
| | - A. Sementsova
- Department of Computer Science, City, University of London, London, United Kingdom
| | - A. S. Widge
- Department of Psychiatry and Behavioral Sciences, University of Minnesota, Minneapolis, MN, United States
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13
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Changes in the TMS-evoked potential N100 in the dorsolateral prefrontal cortex as a function of depression severity in adolescents. J Neural Transm (Vienna) 2022; 129:1339-1352. [PMID: 36029418 PMCID: PMC9550695 DOI: 10.1007/s00702-022-02539-9] [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: 05/24/2022] [Accepted: 08/12/2022] [Indexed: 12/03/2022]
Abstract
Studies using transcranial magnetic stimulation with simultaneous electroencephalography (TMS-EEG) revealed an imbalance between cortical excitation and inhibition (E/I) in the dorsolateral prefrontal cortex (DLPFC) in depression. As adolescence is a developmental period with an increase in depression prevalence and profound neural changes, it is crucial to study the relationship between depression and cortical excitability in adolescence. We aimed to investigate the cortical excitability of the DLPFC in adolescents with depression and a dependency of the TMS-evoked potential N100 on the depression severity. 36 clinical patients (12–18 years of age; 21 females) with a major depressive episode were assessed twice in a longitudinal design: shortly after admission (T0) and after six weeks of intervention (T1). GABA-B-mediated cortical inhibition in the left and right DLPFC, as assessed by the N100, was recorded with EEG. Significantly higher depression scores were reported at T0 compared to T1 (p < 0.001). N100 amplitudes were significantly increased (i.e., more negative) at T0 compared to T1 (p = 0.03). No significant hemispheric difference was found in the N100 component. The correlation between the difference in depression severity and the difference in N100 amplitudes (T0–T1) obtained during stimulation of the left DLPFC did not remain significant after correction for testing in both hemispheres. Higher N100 amplitudes during a state of greater depression severity are suggestive of an E/I imbalance in the DLPFC in adolescents with an acute depressive episode. The N100 reduction potentially reflects a normalization of DLPFC over inhibition in association with decreased depressive symptomatology, indicating severity dependency.
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14
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Kangas ES, Vuoriainen E, Lindeman S, Astikainen P. Auditory event-related potentials in separating patients with depressive disorders and non-depressed controls: A narrative review. Int J Psychophysiol 2022; 179:119-142. [PMID: 35839902 DOI: 10.1016/j.ijpsycho.2022.07.003] [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: 10/29/2021] [Revised: 06/30/2022] [Accepted: 07/07/2022] [Indexed: 10/17/2022]
Abstract
This narrative review brings together the findings regarding the differences in the auditory event-related potentials (ERPs) between patients with depressive disorder and non-depressed control subjects. These studies' results can inform us of the possible alterations in sensory-cognitive processing in depressive disorders and the potential of using these ERPs in clinical applications. Auditory P3, mismatch negativity (MMN) and loudness dependence of auditory evoked potentials (LDAEP) were the subjects of the investigation. A search in PubMed yielded 84 studies. The findings of the reviewed studies were not highly consistent, but some patterns could be identified. For auditory P3b, the common findings were attenuated amplitude and prolonged latency among depressed patients. Regarding auditory MMN, especially the amplitude of duration deviance MMN was commonly attenuated, and the amplitude of frequency deviance MMN was increased in depressed patients. In LDAEP studies, generally, no differences between depressed patients and non-depressed controls were reported, although some group differences concerning specific depression subtypes were found. This review posits that future research should investigate whether certain stimulus conditions are particularly efficient at separating depressed and non-depressed participant groups. Future studies should contrast responses in different subpopulations of depressed patients, as well as different clinical groups (e.g., depressive disorder and anxiety disorder patients), to investigate the specificity of the auditory ERP alterations for depressive disorders.
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Affiliation(s)
- Elina S Kangas
- Department of Psychology, University of Jyvaskyla, Jyväskylä, Finland.
| | - Elisa Vuoriainen
- Human Information Processing Laboratory, Faculty of Social Sciences / Psychology, Tampere University, Tampere, Finland
| | - Sari Lindeman
- Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland; Central Finland Health Care District, Jyväskylä, Finland
| | - Piia Astikainen
- Department of Psychology, University of Jyvaskyla, Jyväskylä, Finland
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15
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Investigation of the Serotonergic Activity and the Serotonin Content in Serum and Platelet, and the Possible Role of the Serotonin Transporter in Patients with Depression. Behav Sci (Basel) 2022; 12:bs12060178. [PMID: 35735388 PMCID: PMC9220674 DOI: 10.3390/bs12060178] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/19/2022] [Accepted: 05/31/2022] [Indexed: 02/05/2023] Open
Abstract
According to the monoamine hypothesis, the development of depression is associated with dysfunctions of the serotonergic system. Alterations in the serotonin transporter gene (5-HTTLPR), the serotonergic activity in the brain, and the content of serotonin (5-HT) have been related to depression and were examined separately by previous studies. This study investigates these parameters in 89 depressed patients and 89 healthy participants. We investigated the serotonergic activity measured by the loudness dependence of auditory evoked potentials (LDAEP). In addition to the examination of the serotonin content (serum and platelet), enzyme-linked immunosorbent assays (ELISA) were used and 5-HTTLPR genotypes were analyzed. We observed a lower serotonin content in patients compared to healthy participants. Further, we noticed a correlation between anxiety and depression-associated symptoms with serotonergic activity. Patients treated with SSRI/SNRI showed decreased contents of serum serotonin compared to patients without any psychotropic medication or other psychotropic medications. Since the serotonergic activity, peripheral serotonin content, and 5-HTTLPR were unrelated, the results suggest independent alterations of central and peripheral serotonergic systems in depression. In line with this finding, serotonergic activity was related to anxiety and depression symptoms. Furthermore, the applied medication seems to influence serum serotonin content in patients with depression.
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16
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Ghaderi A, Brown EC, Clark DL, Ramasubbu R, Kiss ZHT, Protzner AB. Role of the serotonergic system in subcallosal DBS for treatment-resistant depression. Brain Stimul 2021; 15:211-213. [PMID: 34968745 DOI: 10.1016/j.brs.2021.12.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 12/21/2021] [Accepted: 12/22/2021] [Indexed: 11/02/2022] Open
Affiliation(s)
- A Ghaderi
- Departments of Psychology, Clinical Neuroscience, and Psychiatry, Hotchkiss Brain Institute, University of Calgary, Canada
| | - E C Brown
- Departments of Psychiatry and Clinical Neuroscience, Hotchkiss Brain Institute and Mathison Centre, University of Calgary, Canada
| | - D L Clark
- Departments of Psychiatry and Clinical Neuroscience, Hotchkiss Brain Institute and Mathison Centre, University of Calgary, Canada
| | - R Ramasubbu
- Departments of Psychiatry and Clinical Neuroscience, Hotchkiss Brain Institute and Mathison Centre, University of Calgary, Canada
| | - Z H T Kiss
- Departments of Psychiatry and Clinical Neuroscience, Hotchkiss Brain Institute and Mathison Centre, University of Calgary, Canada.
| | - A B Protzner
- Department of Psychology, Hotchkiss Brain Institute and Mathison Centre, University of Calgary, Canada
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17
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Takeuchi N, Fujita K, Taniguchi T, Kinukawa T, Sugiyama S, Kanemoto K, Nishihara M, Inui K. Mechanisms of Long-Latency Paired Pulse Suppression: MEG Study. Brain Topogr 2021; 35:241-250. [PMID: 34748108 DOI: 10.1007/s10548-021-00878-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 10/29/2021] [Indexed: 11/29/2022]
Abstract
Paired pulse suppression is an electrophysiological method used to evaluate sensory suppression and often applied to patients with psychiatric disorders. However, it remains unclear whether the suppression comes from specific inhibitory mechanisms, refractoriness, or fatigue. In the present study, to investigate mechanisms of suppression induced by an auditory paired pulse paradigm in 19 healthy subjects, magnetoencephalography was employed. The control stimulus was a train of 25-ms pure tones of 65 dB SPL for 2500 ms. In order to evoke a test response, the sound pressure of two consecutive tones at 2200 ms in the control sound was increased to 80 dB (Test stimulus). Similar sound pressure changes were also inserted at 1000 (CS2) and 1600 (CS1) ms as conditioning stimuli. Four stimulus conditions were used; (1) Test alone, (2) Test + CS1, (3) Test + CS1 + CS2, and (4) Test + CS2, with the four sound stimuli randomly presented and cortical responses averaged at least 100 times for each condition. The baseline-to-peak and peak-to-peak amplitudes of the P50m, N100m, and P200m components of the test response were compared among the four conditions. In addition, the response to CS1 was compared between conditions (2) and (3). The results showed significant test response suppression by CS1. While the response to CS1 was significantly suppressed when CS2 was present, it did not affect suppression of the test response by CS1. It was thus suggested that the amplitude of the response to a conditioning stimulus is not a factor to determine the inhibitory effects of the test response, indicating that suppression is due to an external influence on the excitatory pathway.
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Affiliation(s)
- Nobuyuki Takeuchi
- Neuropsychiatric Department, Aichi Medical University, Nagakute, 480-1195, Japan. .,Department of Psychiatry, Okazaki City Hospital, Okazaki, 444-8553, Japan.
| | - Kohei Fujita
- Neuropsychiatric Department, Aichi Medical University, Nagakute, 480-1195, Japan
| | - Tomoya Taniguchi
- Department of Anesthesiology, Nagoya University, Nagoya, 466-8550, Japan
| | - Tomoaki Kinukawa
- Department of Anesthesiology, Nagoya University, Nagoya, 466-8550, Japan
| | - Shunsuke Sugiyama
- Department of Psychiatry and Psychotherapy, Gifu University, Gifu, 501-1193, Japan
| | - Kousuke Kanemoto
- Neuropsychiatric Department, Aichi Medical University, Nagakute, 480-1195, Japan
| | - Makoto Nishihara
- Neuropsychiatric Department, Aichi Medical University, Nagakute, 480-1195, Japan.,Multidisciplinary Pain Center, Aichi Medical University, Nagakute, 480-1195, Japan
| | - Koji Inui
- Department of Functioning and Disability, Institute for Developmental Research, Aichi Developmental Disability Center, Kasugai, 480-0392, Japan
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18
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Pauletti C, Mannarelli D, Locuratolo N, Maffucci A, Currà A, Marinelli L, Fattapposta F. Serotonergic central tone in Parkinson's disease with fatigue: Evidence from the loudness dependence of auditory evoked potentials (LDAEP). Neurosci Lett 2021; 764:136242. [PMID: 34509567 DOI: 10.1016/j.neulet.2021.136242] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 09/04/2021] [Accepted: 09/07/2021] [Indexed: 11/26/2022]
Abstract
Central fatigue in Parkinson's disease (PD) is a common and disabling symptom that further worsens the patients' quality of life. A deficit in the serotonergic system may be implicated in the occurrence of fatigue in patients with PD as well as in those with other chronic conditions characterized by fatigue. The loudness dependence of auditory evoked potentials (LDAEP) is a neurophysiological tool that has proved to be effective in measuring the serotonergic central function in vivo. The aim of the present study was to assess central serotonergic activity in PD patients and to explore its possible association with the presence of fatigue. LDAEP was recorded in 38 PD patients (26 without fatigue - PDnF and 12 with fatigue - PDF) and 34 healthy controls. A significant difference between parkinsonian patients and controls emerged, with patients displaying stronger LDAEP values (which reflect a lower serotonergic central tone) than controls. By contrast, no differences in LDAEP emerged between PDF and PDnF. Our electrophysiological data confirmed the presence of a deficit in serotonergic central transmission in PD. An association between this deficit and fatigue was not demonstrated. It is likely that an altered dopamine/serotonin balance, rather than a serotonin deficit alone, is involved in the genesis of central fatigue. This complex and multifaceted symptom is related above all to a dysfunction in the striato-thalamo-cortical loop that connects the neostriatum to the frontal lobe and is strongly affected by motivation.
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Affiliation(s)
- Caterina Pauletti
- Department of Human Neurosciences, Sapienza University of Rome, Viale dell'Università 30, 00185 Rome, Italy.
| | - Daniela Mannarelli
- Department of Human Neurosciences, Sapienza University of Rome, Viale dell'Università 30, 00185 Rome, Italy
| | - Nicoletta Locuratolo
- Department of Human Neurosciences, Sapienza University of Rome, Viale dell'Università 30, 00185 Rome, Italy
| | - Andrea Maffucci
- Department of Human Neurosciences, Sapienza University of Rome, Viale dell'Università 30, 00185 Rome, Italy.
| | - Antonio Currà
- Department of Medical-Surgical Sciences and Biotechnologies, A. Fiorini Hospital, Terracina, LT, Sapienza University of Rome, Polo Pontino, Latina, Italy
| | - Lucio Marinelli
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genova, Genova, Italy; Division of Clinical Neurophysiology, Department of Neuroscience, IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Francesco Fattapposta
- Department of Human Neurosciences, Sapienza University of Rome, Viale dell'Università 30, 00185 Rome, Italy
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19
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Toscano M, Viganò A, Jannini TB, Ruggiero M, Comanducci A, Di Piero V. Intensity-Dependence of Auditory Evoked Potentials (IDAP) as a Neurophysiological Parameter to Predict Anti-Aggressive Responsiveness to SSRI Treatment. Front Pharmacol 2021; 12:716338. [PMID: 34456730 PMCID: PMC8397375 DOI: 10.3389/fphar.2021.716338] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/31/2021] [Indexed: 11/17/2022] Open
Affiliation(s)
- Massimiliano Toscano
- Department of Human Neurosciences, "Sapienza" University of Rome, Rome, Italy.,Department of Neurology, Fatebenefratelli Hospital, Isola Tiberina, Rome, Italy
| | | | - Tommaso B Jannini
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Marco Ruggiero
- Physical Medicine and Rehabilitation Division, Umberto I Hospital, Rome, Italy
| | | | - Vittorio Di Piero
- Department of Human Neurosciences, "Sapienza" University of Rome, Rome, Italy
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20
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Hwang M, Lee YJ, Lee M, Kang B, Lee YS, Hwang J, Woo SI, Hahn SW. Relationship Between the Loudness Dependence of the Auditory Evoked Potential and the Severity of Suicidal Ideation in Patients with Major Depressive Disorder. CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE 2021; 19:323-333. [PMID: 33888661 PMCID: PMC8077063 DOI: 10.9758/cpn.2021.19.2.323] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 09/22/2020] [Accepted: 09/29/2020] [Indexed: 11/18/2022]
Abstract
Objective The loudness dependence of the auditory evoked potential (LDAEP) is a reliable indicator that is inversely related to central serotonergic activity, and recent studies have suggested an association between LDAEP and suicidal ideation. This study investigated differences in LDAEP between patients with major depressive disorder and high suicidality and those with major depressive disorder and low suicidality compared to healthy controls. Methods This study included 67 participants: 23 patients with major depressive disorder with high suicidality (9 males, mean age 29.3 ± 15.7 years, total score of SSI-BECK ≥ 15), 22 patients with major depressive disorder with low suicidality (9 males, mean age 42.2 ± 14.4 years, total score of SSI-BECK ≤ 14), and 22 healthy controls (11 males, mean age 31.6 ± 8.7 years). Participants completed the following assessments: Patient Health Questionnaire-9, Beck Depression Inventory-II, Beck Scale for Suicidal ideation, State Anxiety Scale of the State-Trait Anxiety Inventory, Beck Anxiety Inventory, and LDAEP (measured at electrode Cz). Results There were no sex-related differences among groups (p = 0.821). The high-suicidality group exhibited significantly higher LDAEP compared to the low-suicidality group (0.82 ± 0.79 vs. 0.26 ± 0.36, p = 0.014). No significant differences were found between the control and high-suicidality (p = 0.281) or the control and low-suicidality groups (p = 0.236). Conclusion LDAEP was applied to demonstrate the association between serotonergic activity and suicidal ideation and suicide risk in major depression and may be a candidate of biological marker for preventing suicide in this study.
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Affiliation(s)
- Mingyu Hwang
- Department of Psychiatry, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea
| | - Yeon Jung Lee
- Department of Psychiatry, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea
| | - Minji Lee
- Department of Psychiatry, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea
| | - Byungjoo Kang
- Department of Psychiatry, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea
| | - Yun Sung Lee
- Department of Medical Sciences, Graduate School of Soonchunhyang University, Asan, Korea
| | - Jaeuk Hwang
- Department of Psychiatry, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea
| | - Sung-Il Woo
- Department of Psychiatry, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea
| | - Sang-Woo Hahn
- Department of Psychiatry, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea
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21
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Yoon S, Kim Y, Lee SH. Does the Loudness Dependence of Auditory Evoked Potential Predict Response to Selective Serotonin Reuptake Inhibitors?: A Meta-analysis. CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE 2021; 19:254-261. [PMID: 33888654 PMCID: PMC8077049 DOI: 10.9758/cpn.2021.19.2.254] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/05/2020] [Accepted: 06/16/2020] [Indexed: 12/12/2022]
Abstract
Objective Loudness of dependence of the auditory evoked potential (LDAEP) is an electroencephalogram-based measure that represents amplitude changes of auditory evoked potentials in primary auditory cortex. Several narrative reviews argued that pre-treatment LDAEP values predict responses to selective serotonin reuptake inhibitors (SSRIs). This study aims to quantify the overall relationship between baseline LDAEP values and treatment response to SSRIs in patients with depression and generalized anxiety disorders, evidenced by clinical symptoms reductions, across multiple studies. Methods In our meta-analysis, seven articles with a total sample of 241 patients were included. Results Our results showed that stronger baseline LDAEP values predicted favorable response to SSRIs for depression and anxiety, with a moderate effect size. Conclusion The current results support the idea that LDAEP is a promising biomarker for SSRIs treatment prediction in patients with depression and generalized anxiety disorder.
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Affiliation(s)
- Sunkyung Yoon
- Department of Psychology, University of South Florida, Tampa, FL, USA
| | - Yourim Kim
- Clinical Emotion and Cognition Research Laboratory, Goyang, Korea
| | - Seung-Hwan Lee
- Clinical Emotion and Cognition Research Laboratory, Goyang, Korea.,Department of Psychiatry, Inje University Ilsan Paik Hospital, Goyang, Korea
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22
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Kim JS, Kim S, Lee HS, Kwon YJ, Lee HY, Shim SH. Auditory evoked potentials and suicidal behaviors in patients with major depressive disorders. Sci Rep 2021; 11:7255. [PMID: 33790320 PMCID: PMC8012352 DOI: 10.1038/s41598-021-86602-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 03/15/2021] [Indexed: 11/09/2022] Open
Abstract
Loudness dependence of auditory evoked potentials (LDAEP) has been proposed as a biological marker of central serotonergic activity related to suicides. This study’s objective was to analyze the difference in LDAEP between depressed patients with suicide attempts (SA) and suicidal ideation (SI). It included 130 participants (45 depressed patients with SA, 49 depressed patients with SI, and 36 healthy controls) aged > 18 years who exhibited LDAEP during electroencephalography. Psychological characteristics and event-related potentials of the three groups were compared. There was no significant difference in LDAEP between major depressive disorder (MDD) patients with SA and SI (p = 0.59). MDD patients with SI, who attempted suicide had significantly lower LDAEP than healthy controls (p = 0.01 and p = 0.01, respectively). However, the significance disappeared when psychological characteristics were controlled. Our results suggest that LDAEP might not be possible biomarkers for suicidal behaviors in patients with MDD. Further studies to assess the biological basis of suicide and identify the underlying dimensions that mediate the relationship between the biological basis and suicidal behaviors will be needed.
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Affiliation(s)
- Ji Sun Kim
- Department of Psychiatry, College of Medicine, Soonchunhyang University Cheonan Hospital, 31 Suncheonhyang 6-gil, Dongnam-gu, Cheonan, 31151, Republic of Korea
| | - Sungkean Kim
- Department of Human-Computer Interaction, Hanyang University, Ansan-si, 15588, South Korea
| | - Ho-Sung Lee
- Department of Pulmonology and Allergy, Cheonan Hospital, Soonchunhyang University, Cheonan, Republic of Korea
| | - Young Joon Kwon
- Department of Psychiatry, College of Medicine, Soonchunhyang University Cheonan Hospital, 31 Suncheonhyang 6-gil, Dongnam-gu, Cheonan, 31151, Republic of Korea
| | - Hwa Young Lee
- Department of Psychiatry, College of Medicine, Soonchunhyang University Cheonan Hospital, 31 Suncheonhyang 6-gil, Dongnam-gu, Cheonan, 31151, Republic of Korea
| | - Se-Hoon Shim
- Department of Psychiatry, College of Medicine, Soonchunhyang University Cheonan Hospital, 31 Suncheonhyang 6-gil, Dongnam-gu, Cheonan, 31151, Republic of Korea.
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23
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Depressive symptoms affect short- and long-term speech recognition outcome in cochlear implant users. Eur Arch Otorhinolaryngol 2020; 278:345-351. [PMID: 32504200 PMCID: PMC7826306 DOI: 10.1007/s00405-020-06096-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 05/27/2020] [Indexed: 01/13/2023]
Abstract
Purpose To investigate the impact of the amount of depressive symptoms in cochlear implant (CI) recipients on the development of speech recognition after CI-activation up to 2 years. Design Retrospective data analysis of a German short form of the Beck Depression Inventory given at initial activation of the implant in relation to monosyllabic word recognition score at conversational level at initial activation and at 3 months, 1 and 2-year follow-up measurements. Study sample Thirty-one CI-patients (11 female, 20 male) aged between 41 and 83 (M = 64.77, SD = 10.43) who were German native speakers, postlingually deafened, with severe hearing loss in both sides but unilaterally implanted (19 right-sided, 12 left-sided). Results The amount of depressive symptoms at initial activation was negatively correlated with the monosyllabic recognition score after 3 months and after 1 year of implant use. Conclusion The psychological status in terms of depressive symptoms is an important parameter regarding the rehabilitative outcome of CI-patients. Care staff and CI-users should be sensitized to the link between depressive symptoms and the development of speech recognition with CI.
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Ruohonen EM, Kattainen S, Li X, Taskila AE, Ye C, Astikainen P. Event-Related Potentials to Changes in Sound Intensity Demonstrate Alterations in Brain Function Related to Depression and Aging. Front Hum Neurosci 2020; 14:98. [PMID: 32292334 PMCID: PMC7119431 DOI: 10.3389/fnhum.2020.00098] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 03/03/2020] [Indexed: 01/24/2023] Open
Abstract
Measures of the brain's automatic electrophysiological responses to sounds represent a potential tool for identifying age- and depression-related neural markers. However, these markers have rarely been studied related to aging and depression within one study. Here, we investigated auditory event-related potentials (ERPs) in the brain that may show different alterations related to aging and depression. We used an oddball condition employing changes in sound intensity to investigate: (i) sound intensity dependence; (ii) sensory gating; and (iii) change detection, all within a single paradigm. The ERPs of younger (18-40 years) and older (62-80 years) depressed female participants and age-matched non-depressed participants were measured. Intensity dependence was examined as the difference between N1 responses to repeated high- and low-intensity sounds, sensory gating as N1 responses to rare and repeated sounds, and change detection as indexed by the mismatch negativity (MMN). We found that intensity dependence was greater in older participants than younger ones, indicating effects related to aging but not to depression. For sensory gating, we found depression- and age-related alterations as increased N1 responses. No group differences were found for MMN. Although a sensory gating deficit was expected in older adults, this study is the first to demonstrate age-related overexcitability in sound intensity dependency. The results indicate that automatic brain responses to sound intensity changes are suitable for studying age- and depression-related neural markers but may not be sensitive enough to differentiate the effects of aging and depression.
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Affiliation(s)
- Elisa M Ruohonen
- Department of Psychology, University of Jyväskylä, Jyväskylä, Finland
| | - Saara Kattainen
- Department of Psychology, University of Jyväskylä, Jyväskylä, Finland
| | - Xueqiao Li
- Department of Psychology, University of Jyväskylä, Jyväskylä, Finland
| | | | - Chaoxiong Ye
- Department of Psychology, University of Jyväskylä, Jyväskylä, Finland.,Institute of Brain and Psychological Sciences, Sichuan Normal University, Chengdu, China
| | - Piia Astikainen
- Department of Psychology, University of Jyväskylä, Jyväskylä, Finland
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Pillai RLI, Bartlett EA, Ananth MR, Zhu C, Yang J, Hajcak G, Parsey RV, DeLorenzo C. Examining the underpinnings of loudness dependence of auditory evoked potentials with positron emission tomography. Neuroimage 2020; 213:116733. [PMID: 32169543 DOI: 10.1016/j.neuroimage.2020.116733] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 03/07/2020] [Accepted: 03/09/2020] [Indexed: 11/30/2022] Open
Abstract
Loudness dependence of auditory evoked potentials (LDAEP) has long been considered to reflect central basal serotonin transmission. However, the relationship between LDAEP and individual serotonin receptors and transporters has not been fully explored in humans and may involve other neurotransmitter systems. To examine LDAEP's relationship with the serotonin system, we performed PET using serotonin-1A (5-HT1A) imaging via [11C]CUMI-101 and serotonin transporter (5-HTT) imaging via [11C]DASB on a mixed sample of healthy controls (n = 4: 4 females, 0 males), patients with unipolar (MDD, n = 11: 4 females, 7 males) and bipolar depression (BD, n = 8: 4 females, 4 males). On these same participants, we also performed electroencephalography (EEG) within a week of PET scanning, using 1000 Hz tones of varying intensity to evoke LDAEP. We then evaluated the relationship between LDAEP and 5-HT1A or 5-HTT binding in both the raphe (5-HT1A)/midbrain (5-HTT) areas and in the temporal cortex. We found that LDAEP was significantly correlated with 5-HT1A positively and with 5-HTT negatively in the temporal cortex (p < 0.05), but not correlated with either in midbrain or raphe. In males only, exploratory analysis showed multiple regions in which LDAEP significantly correlated with 5-HT1A throughout the brain; we did not find this with 5-HTT. This multimodal study partially validates preclinical models of a serotonergic influence on LDAEP. Replication in larger samples is necessary to further clarify our understanding of the role of serotonin in perception of auditory tones.
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Affiliation(s)
| | - Elizabeth A Bartlett
- Department of Molecular Imaging and Neuropathology, New York State Psychiatric Institute, United States
| | - Mala R Ananth
- Department of Psychiatry, Stony Brook University, United States
| | - Chencan Zhu
- Department of Applied Mathematics and Statistics, Stony Brook University, United States
| | - Jie Yang
- Department of Family, Population, and Preventive Medicine, Stony Brook University, United States
| | - Greg Hajcak
- Department of Biomedical Sciences and Psychology, Florida State University, United States
| | - Ramin V Parsey
- Department of Psychiatry, Stony Brook University, United States
| | - Christine DeLorenzo
- Department of Psychiatry, Stony Brook University, United States; Department of Biomedical Engineering, Stony Brook University, United States
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Park YM. The Hypothesis on the Prediction of Treatment Response with Buspirone Augmentation along with Serotonergic Antidepressant in Patients with Major Depressive Disorder Using Loudness Dependence of Auditory Evoked Potentials: Two Cases and Review of the Literature for Evidence. Psychiatry Investig 2020; 17:222-224. [PMID: 32151126 PMCID: PMC7113178 DOI: 10.30773/pi.2019.0293] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 12/21/2019] [Indexed: 11/27/2022] Open
Abstract
Some studies have shown that augmenting buspirone with antidepressant has similar efficacy as the combination with two antidepressants in patients with major depressive disorder (MDD). Some researchers assume that the antidepressant boosting effect of buspirone is revealed under a poop-out state, which means a phenomenon where some patients having an initial response to an antidepressant may worsen or not improve any more even though they continue treatment because of serotonin depletion. Loudness dependence of auditory evoked potential (LDAEP) is a reliable marker of central serotonergic activity, and is inversely correlated with central serotonergic activity. Thus LDAEP will be a biological marker for prediction of treatment response with buspirone augmentation with SSRI because it can measure central serotonergic activity such as serotonin depletion. Two cases will be introduced and the literature evidence about whether LDAEP can predict the treatment response of buspirone augmentation in patients with MDD will be reviewed.
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Affiliation(s)
- Young-Min Park
- Department of Psychiatry, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Republic of Korea
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27
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Kim JS, Kim DW, Kwon YJ, Lee HY, Kim S, Shim SH. The relationship between auditory evoked potentials and symptoms of attention-deficit/hyperactivity disorder in adult patients with major depressive disorder. Int J Psychophysiol 2019; 142:50-56. [PMID: 31207261 DOI: 10.1016/j.ijpsycho.2019.06.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 06/10/2019] [Accepted: 06/13/2019] [Indexed: 12/25/2022]
Abstract
OBJECTIVES Loudness dependence of auditory evoked potential (LDAEP) has been proposed as a biological marker for central serotonergic activity in depressive illness. A recent study has suggested that serotonin plays an important role in impulsivity and emotional sensitivity that are prominent clinical manifestations in attention deficit and hyperactivity disorder (ADHD). The objective of this study was to examine the association between LDAEP and ADHD symptoms in major depressive disorder (MDD). METHODS A total of 60 participants (40 subjects with MDD and 20 healthy controls) aged >18 years who had LDAEPs performed during electroencephalograms were included in this study. ADHD symptoms, depressive, and anxiety symptoms were evaluated. Psychological characteristics and event-related potentials (ERP) were compared among three groups: depression with ADHD symptoms, depression without ADHD symptoms, and healthy controls. RESULTS MDD subjects with ADHD symptoms (N = 20) showed significantly lower LDAEP levels than those without ADHD symptoms (N = 20) and healthy controls (N = 20). LDAEP differences between MDD subjects without ADHD symptoms and healthy controls were not statistically significant. In partial correlation analyses adjusted for age and sex, significant correlations of psychological scales of depression, ADHD symptoms, and LDAEPs were found. CONCLUSION Results of the present study suggest that LDAEP can reflect adult ADHD symptoms in MDD. Auditory evoked potential appears to be a promising candidate as an evaluation tool for inattention and poor impulse control as well as emotional sensitivity.
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Affiliation(s)
- Ji Sun Kim
- Department of Psychiatry, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea
| | - Do-Won Kim
- Department of Biomedical Engineering, Chonnam National University, Yeosu, Republic of Korea
| | - Young Joon Kwon
- Department of Psychiatry, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea
| | - Hwa Young Lee
- Department of Psychiatry, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea
| | - Sungkean Kim
- Department of Biomedical Engineering, Hanyang University, Seoul, Republic of Korea
| | - Se Hoon Shim
- Department of Psychiatry, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea.
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28
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Widge AS, Bilge MT, Montana R, Chang W, Rodriguez CI, Deckersbach T, Carpenter LL, Kalin NH, Nemeroff CB. Electroencephalographic Biomarkers for Treatment Response Prediction in Major Depressive Illness: A Meta-Analysis. Am J Psychiatry 2019; 176:44-56. [PMID: 30278789 PMCID: PMC6312739 DOI: 10.1176/appi.ajp.2018.17121358] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
OBJECTIVE Reducing unsuccessful treatment trials could improve depression treatment. Quantitative EEG (QEEG) may predict treatment response and is being commercially marketed for this purpose. The authors sought to quantify the reliability of QEEG for response prediction in depressive illness and to identify methodological limitations of the available evidence. METHOD The authors conducted a meta-analysis of diagnostic accuracy for QEEG in depressive illness, based on articles published between January 2000 and November 2017. The review included all articles that used QEEG to predict response during a major depressive episode, regardless of patient population, treatment, or QEEG marker. The primary meta-analytic outcome was the accuracy for predicting response to depression treatment, expressed as sensitivity, specificity, and the logarithm of the diagnostic odds ratio. Raters also judged each article on indicators of good research practice. RESULTS In 76 articles reporting 81 biomarkers, the meta-analytic estimates showed a sensitivity of 0.72 (95% CI=0.67-0.76) and a specificity of 0.68 (95% CI=0.63-0.73). The logarithm of the diagnostic odds ratio was 1.89 (95% CI=1.56-2.21), and the area under the receiver operator curve was 0.76 (95% CI=0.71-0.80). No specific QEEG biomarker or specific treatment showed greater predictive power than the all-studies estimate in a meta-regression. Funnel plot analysis suggested substantial publication bias. Most studies did not use ideal practices. CONCLUSIONS QEEG does not appear to be clinically reliable for predicting depression treatment response, as the literature is limited by underreporting of negative results, a lack of out-of-sample validation, and insufficient direct replication of previous findings. Until these limitations are remedied, QEEG is not recommended for guiding selection of psychiatric treatment.
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Affiliation(s)
- Alik S. Widge
- Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, MA,Picower Institute for Learning & Memory, Massachusetts Institute of Technology, Cambridge, MA,Correspondence to Alik S Widge, MD, PhD, 149 13th St, Room 2627, Charlestown, MA 02129, , 617-643-2580
| | - M. Taha Bilge
- Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Rebecca Montana
- Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Weilynn Chang
- Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | | | - Thilo Deckersbach
- Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Linda L. Carpenter
- Butler Hospital and Warren Alpert Medical School of Brown University, Providence, RI
| | - Ned H. Kalin
- Department of Psychiatry, University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - Charles B. Nemeroff
- Department of Psychiatry, University of Miami Miller School of Medicine, Miami, FL
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29
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Lewine JD, Paulson K, Bangera N, Simon BJ. Exploration of the Impact of Brief Noninvasive Vagal Nerve Stimulation on EEG and Event‐Related Potentials. Neuromodulation 2018; 22:564-572. [DOI: 10.1111/ner.12864] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 08/02/2018] [Accepted: 08/15/2018] [Indexed: 01/25/2023]
Affiliation(s)
- Jeffrey D. Lewine
- The Mind Research Network Albuquerque NM USA
- The Lovelace Family of Companies Albuquerque NM USA
- The Department of Neurology and the Department of PsychologyUniversity of New Mexico Albuquerque NM USA
| | - Kim Paulson
- The Mind Research Network Albuquerque NM USA
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30
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Association of the loudness dependence of auditory evoked potentials with clinical changes to repetitive transcranial magnetic stimulation in patients with depression. J Affect Disord 2018; 238:451-457. [PMID: 29920440 DOI: 10.1016/j.jad.2018.05.023] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 04/09/2018] [Accepted: 05/17/2018] [Indexed: 11/20/2022]
Abstract
BACKGROUND Although the application of repetitive transcranial magnetic stimulation (rTMS) for treatment of depression has been well investigated, there are few biological predictors of clinical outcomes to rTMS treatment. Previous studies have suggested that the loudness dependence of auditory evoked potentials (LDAEP) can be used as a predictor of response to antidepressant treatment. However, little is known about the association between rTMS and LDAEP. The present study aimed to investigate whether baseline LDAEP is associated with clinical changes to rTMS treatment in patients with major depressive disorder (MDD), and to explore the effect of high-frequency rTMS on LDAEP. METHODS Thirty patients were randomized to receive 15 sessions of active (n = 15) or sham rTMS (n = 15). LDAEP and clinical measures of depression were assessed before and after 10 Hz rTMS treatment for 15 days. RESULTS Baseline LDAEP was associated with changes in scores on the Hamilton Rating Scale for Depression. There were no significant effects of rTMS on LDAEP. Patients with high LDAEP exhibited more favorable clinical changes than those with low LDAEP following treatment with rTMS. LIMITATIONS The sample was relatively small, and the participants were not divided into responders and non-responders group due to small sample. An influence of medication has not been controlled. CONCLUSIONS Our findings suggest that high baseline LDAEP may be associated with favorable clinical changes to rTMS treatment in patients with MDD. Further studies are required to replicate and validate the potential use of LDAEP as a predictor of clinical changes to rTMS treatment.
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31
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Voegeli G, Cléry-Melin ML, Ramoz N, Gorwood P. Progress in Elucidating Biomarkers of Antidepressant Pharmacological Treatment Response: A Systematic Review and Meta-analysis of the Last 15 Years. Drugs 2018; 77:1967-1986. [PMID: 29094313 DOI: 10.1007/s40265-017-0819-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Antidepressant drugs are widely prescribed, but response rates after 3 months are only around one-third, explaining the importance of the search of objectively measurable markers predicting positive treatment response. These markers are being developed in different fields, with different techniques, sample sizes, costs, and efficiency. It is therefore difficult to know which ones are the most promising. OBJECTIVE Our purpose was to compute comparable (i.e., standardized) effect sizes, at study level but also at marker level, in order to conclude on the efficacy of each technique used and all analyzed markers. METHODS We conducted a systematic search on the PubMed database to gather all articles published since 2000 using objectively measurable markers to predict antidepressant response from five domains, namely cognition, electrophysiology, imaging, genetics, and transcriptomics/proteomics/epigenetics. A manual screening of the abstracts and the reference lists of these articles completed the search process. RESULTS Executive functioning, theta activity in the rostral Anterior Cingular Cortex (rACC), and polysomnographic sleep measures could be considered as belonging to the best objectively measured markers, with a combined d around 1 and at least four positive studies. For inter-category comparisons, the approaches that showed the highest effect sizes are, in descending order, imaging (combined d between 0.703 and 1.353), electrophysiology (0.294-1.138), cognition (0.929-1.022), proteins/nucleotides (0.520-1.18), and genetics (0.021-0.515). CONCLUSION Markers of antidepressant treatment outcome are numerous, but with a discrepant level of accuracy. Many biomarkers and cognitions have sufficient predictive value (d ≥ 1) to be potentially useful for clinicians to predict outcome and personalize antidepressant treatment.
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Affiliation(s)
- G Voegeli
- CMME, Hôpital Sainte-Anne, Université Paris Descartes, 100 rue de la Santé, 75014, Paris, France.
- Centre de Psychiatrie et Neuroscience (INSERM UMR 894), 2 ter rue d'Alésia, 75014, Paris, France.
| | - M L Cléry-Melin
- CMME, Hôpital Sainte-Anne, Université Paris Descartes, 100 rue de la Santé, 75014, Paris, France
- Centre de Psychiatrie et Neuroscience (INSERM UMR 894), 2 ter rue d'Alésia, 75014, Paris, France
| | - N Ramoz
- CMME, Hôpital Sainte-Anne, Université Paris Descartes, 100 rue de la Santé, 75014, Paris, France
- Centre de Psychiatrie et Neuroscience (INSERM UMR 894), 2 ter rue d'Alésia, 75014, Paris, France
| | - P Gorwood
- CMME, Hôpital Sainte-Anne, Université Paris Descartes, 100 rue de la Santé, 75014, Paris, France
- Centre de Psychiatrie et Neuroscience (INSERM UMR 894), 2 ter rue d'Alésia, 75014, Paris, France
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Wyss C, Tse DHY, Boers F, Shah NJ, Neuner I, Kawohl W. Association between Cortical GABA and Loudness Dependence of Auditory Evoked Potentials (LDAEP) in Humans. Int J Neuropsychopharmacol 2018; 21:809-813. [PMID: 29917080 PMCID: PMC6119294 DOI: 10.1093/ijnp/pyy056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 06/14/2018] [Indexed: 11/13/2022] Open
Abstract
Loudness dependence of auditory evoked potentials (LDAEP) is a widely used EEG-based biomarker for central serotonergic activity. Serotonin has been shown to be associated with different psychiatric disorders such as depression and schizophrenia. Despite its clinical significance, the underlying neurochemical mechanism of this promising marker is not fully understood, and further research is needed to improve its validity. Other neurotransmitters might have a significant impact on this measure. Thus, we assessed the inhibitory action through individual GABA/H20 concentrations and GABA/glutamate ratios by means of magnetic resonance spectroscopy at 3T in healthy subjects. The measurements were assessed in the primary auditory cortex to investigate the association with the LDAEP, whose generators are mainly in the primary auditory cortex. For the first time, this study examines the link between GABAergic neurotransmission and LDAEP, and the data preliminary show that GABA may not contribute to the generation of EEG-based LDAEP.
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Affiliation(s)
- Christine Wyss
- Department of Psychiatry, Psychotherapy and Psychosomatics, Hospital of Psychiatry, University of Zurich, Zurich, Switzerland,Correspondence: Christine Wyss, PhD, Hospital of Psychiatry, University of Zurich, Department of Psychiatry, Psychotherapy and Psychosomatics, Militärstrasse 8, P.O. Box 2019, 8021 Zurich, Switzerland ()
| | - Desmond H Y Tse
- Institute of Neuroscience and Medicine, INM4, Forschungszentrum Jülich, Jülich, Germany
| | - Frank Boers
- Institute of Neuroscience and Medicine, INM4, Forschungszentrum Jülich, Jülich, Germany
| | - Nadim J Shah
- Institute of Neuroscience and Medicine, INM4, Forschungszentrum Jülich, Jülich, Germany,JARA-Brain, Translational Medicine, Jülich, Germany,Department of Neurology, RWTH Aachen University, Aachen, Germany
| | - Irene Neuner
- Institute of Neuroscience and Medicine, INM4, Forschungszentrum Jülich, Jülich, Germany,Department of Psychiatry, Psychotherapy and Psychosomatics, RWTH Aachen University, Aachen, Germany,JARA-Brain, Translational Medicine, Jülich, Germany
| | - Wolfram Kawohl
- Department of Psychiatry, Psychotherapy and Psychosomatics, Hospital of Psychiatry, University of Zurich, Zurich, Switzerland
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Tenke CE, Kayser J, Pechtel P, Webb CA, Dillon DG, Goer F, Murray L, Deldin P, Kurian BT, McGrath PJ, Parsey R, Trivedi M, Fava M, Weissman MM, McInnis M, Abraham K, E Alvarenga J, Alschuler DM, Cooper C, Pizzagalli DA, Bruder GE. Demonstrating test-retest reliability of electrophysiological measures for healthy adults in a multisite study of biomarkers of antidepressant treatment response. Psychophysiology 2017; 54:34-50. [PMID: 28000259 DOI: 10.1111/psyp.12758] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Accepted: 08/16/2016] [Indexed: 01/13/2023]
Abstract
Growing evidence suggests that loudness dependency of auditory evoked potentials (LDAEP) and resting EEG alpha and theta may be biological markers for predicting response to antidepressants. In spite of this promise, little is known about the joint reliability of these markers, and thus their clinical applicability. New standardized procedures were developed to improve the compatibility of data acquired with different EEG platforms, and used to examine test-retest reliability for the three electrophysiological measures selected for a multisite project-Establishing Moderators and Biosignatures of Antidepressant Response for Clinical Care (EMBARC). Thirty-nine healthy controls across four clinical research sites were tested in two sessions separated by about 1 week. Resting EEG (eyes-open and eyes-closed conditions) was recorded and LDAEP measured using binaural tones (1000 Hz, 40 ms) at five intensities (60-100 dB SPL). Principal components analysis of current source density waveforms reduced volume conduction and provided reference-free measures of resting EEG alpha and N1 dipole activity to tones from auditory cortex. Low-resolution electromagnetic tomography (LORETA) extracted resting theta current density measures corresponding to rostral anterior cingulate (rACC), which has been implicated in treatment response. There were no significant differences in posterior alpha, N1 dipole, or rACC theta across sessions. Test-retest reliability was .84 for alpha, .87 for N1 dipole, and .70 for theta rACC current density. The demonstration of good-to-excellent reliability for these measures provides a template for future EEG/ERP studies from multiple testing sites, and an important step for evaluating them as biomarkers for predicting treatment response.
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Affiliation(s)
- Craig E Tenke
- Department of Psychiatry, Columbia University College of Physicians & Surgeons and New York State Psychiatric Institute, New York, NY, USA
| | - Jürgen Kayser
- Department of Psychiatry, Columbia University College of Physicians & Surgeons and New York State Psychiatric Institute, New York, NY, USA
| | - Pia Pechtel
- Department of Psychiatry, Harvard Medical School and McLean Hospital, Belmont, Massachusetts, USA
| | - Christian A Webb
- Department of Psychiatry, Harvard Medical School and McLean Hospital, Belmont, Massachusetts, USA
| | - Daniel G Dillon
- Department of Psychiatry, Harvard Medical School and McLean Hospital, Belmont, Massachusetts, USA
| | - Franziska Goer
- Center For Depression, Anxiety and Stress Research, McLean Hospital, Belmont, Massachusetts, USA
| | - Laura Murray
- Center For Depression, Anxiety and Stress Research, McLean Hospital, Belmont, Massachusetts, USA
| | - Patricia Deldin
- Departments of Psychology and Psychiatry, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Benji T Kurian
- Department of Psychiatry, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Patrick J McGrath
- Department of Psychiatry, Columbia University College of Physicians & Surgeons and New York State Psychiatric Institute, New York, NY, USA
| | - Ramin Parsey
- Department of Psychiatry, SUNY Stony Brook, Stony Brook, New York, USA
| | - Madhukar Trivedi
- Department of Psychiatry, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Maurizio Fava
- Department of Psychiatry, Harvard Medical School and McLean Hospital, Belmont, Massachusetts, USA.,Depression Clinical and Research Program, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Myrna M Weissman
- Department of Psychiatry, Columbia University College of Physicians & Surgeons and New York State Psychiatric Institute, New York, NY, USA
| | - Melvin McInnis
- Departments of Psychology and Psychiatry, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Karen Abraham
- Department of Psychiatry, Columbia University College of Physicians & Surgeons and New York State Psychiatric Institute, New York, NY, USA
| | - Jorge E Alvarenga
- Department of Psychiatry, Columbia University College of Physicians & Surgeons and New York State Psychiatric Institute, New York, NY, USA
| | - Daniel M Alschuler
- Department of Psychiatry, Columbia University College of Physicians & Surgeons and New York State Psychiatric Institute, New York, NY, USA
| | - Crystal Cooper
- Department of Psychiatry, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Diego A Pizzagalli
- Department of Psychiatry, Harvard Medical School and McLean Hospital, Belmont, Massachusetts, USA
| | - Gerard E Bruder
- Department of Psychiatry, Columbia University College of Physicians & Surgeons and New York State Psychiatric Institute, New York, NY, USA
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Brain responses to sound intensity changes dissociate depressed participants and healthy controls. Biol Psychol 2017; 127:74-81. [PMID: 28499838 DOI: 10.1016/j.biopsycho.2017.05.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 05/04/2017] [Accepted: 05/07/2017] [Indexed: 11/22/2022]
Abstract
Depression is associated with bias in emotional information processing, but less is known about the processing of neutral sensory stimuli. Of particular interest is processing of sound intensity which is suggested to indicate central serotonergic function. We tested weather event-related brain potentials (ERPs) to occasional changes in sound intensity can dissociate first-episode depressed, recurrent depressed and healthy control participants. The first-episode depressed showed larger N1 amplitude to deviant sounds compared to recurrent depression group and control participants. In addition, both depression groups, but not the control group, showed larger N1 amplitude to deviant than standard sounds. Whether these manifestations of sensory over-excitability in depression are directly related to the serotonergic neurotransmission requires further research. The method based on ERPs to sound intensity change is fast and low-cost way to objectively measure brain activation and holds promise as a future diagnostic tool.
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Wyss C, Tse DHY, Kometer M, Dammers J, Achermann R, Shah NJ, Kawohl W, Neuner I. GABA metabolism and its role in gamma-band oscillatory activity during auditory processing: An MRS and EEG study. Hum Brain Mapp 2017; 38:3975-3987. [PMID: 28480987 DOI: 10.1002/hbm.23642] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 04/25/2017] [Accepted: 04/26/2017] [Indexed: 12/22/2022] Open
Abstract
Gamma-aminobutyric acid (GABA) and glutamate are believed to have inhibitory and exhibitory neuromodulatory effects that regulate the brain's response to sensory perception. Furthermore, frequency-specific synchronization of neuronal excitability within the gamma band (30-80 Hz) is attributable to a homeostatic balance between excitation and inhibition. However, our understanding of the physiological mechanism underlying gamma rhythms is based on animal models. Investigations of the relationship between GABA concentrations, glutamate concentrations, and gamma band activity in humans were mostly restricted to the visual cortex and are conflicting. Here, we performed a multimodal imaging study combining magnetic resonance spectroscopy (MRS) with electroencephalography (EEG) in the auditory cortex. In 14 healthy subjects, we investigated the impact of individual differences in GABA and glutamate concentration on gamma band response (GBR) following auditory stimulus presentation. We explored the effects of bulk GABA on the GBR across frequency (30-200 Hz) and time (-200 to 600 ms) and found no significant relationship. Furthermore, no correlations were found between gamma peak frequency or power measures and metabolite concentrations (GABA, glutamate, and GABA/glutamate ratio). These findings suggest that, according to MRS measurements, and given the auditory stimuli used in this study, GABA and glutamate concentrations are unlikely to play a significant role in the inhibitory and excitatory drive in the generation of gamma band activity in the auditory cortex. Hum Brain Mapp 38:3975-3987, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Christine Wyss
- Department of Psychiatry, Psychotherapie and Psychosomatics, Hospital of Psychiatry, University of Zurich, Switzerland
| | - Desmond H Y Tse
- Institute of Neuroscience and Medicine, INM4, Forschungszentrum Jülich, Germany
| | - Michael Kometer
- Department of Psychiatry, Psychotherapie and Psychosomatics, Hospital of Psychiatry, University of Zurich, Switzerland
| | - Jürgen Dammers
- Institute of Neuroscience and Medicine, INM4, Forschungszentrum Jülich, Germany
| | - Rita Achermann
- Psychological Methods, Evaluation and Statistics, Department of Psychology, University of Zurich, Switzerland
| | - N Jon Shah
- Institute of Neuroscience and Medicine, INM4, Forschungszentrum Jülich, Germany.,Department of Psychiatry, Psychotherapy and Psychosomatics, RWTH Aachen University, Germany.,JARA-Brain, Translational Medicine, Jülich, Germany.,Department of Neurology, RWTH Aachen University, Germany
| | - Wolfram Kawohl
- Department of Psychiatry, Psychotherapie and Psychosomatics, Hospital of Psychiatry, University of Zurich, Switzerland
| | - Irene Neuner
- Institute of Neuroscience and Medicine, INM4, Forschungszentrum Jülich, Germany.,Department of Psychiatry, Psychotherapy and Psychosomatics, RWTH Aachen University, Germany.,JARA-Brain, Translational Medicine, Jülich, Germany
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36
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Abstract
Major depressive disorder is one of the leading causes of disability in the world since depression is highly frequent and causes a strong burden. In order to reduce the duration of depressive episodes, clinicians would need to choose the most effective therapy for each individual right away. A prerequisite for this would be to have biomarkers at hand that would predict which individual would benefit from which kind of therapy (for example, pharmacotherapy or psychotherapy) or even from which kind of antidepressant class. In the past, neuroimaging, electroencephalogram, genetic, proteomic, and inflammation markers have been under investigation for their utility to predict targeted therapies. The present overview demonstrates recent advances in all of these different methodological areas and concludes that these approaches are promising but also that the aim to have such a marker available has not yet been reached. For example, the integration of markers from different systems needs to be achieved. With ongoing advances in the accuracy of sensing techniques and improvement of modelling approaches, this challenge might be achievable.
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Affiliation(s)
- Thomas Frodl
- Department of Psychiatry and Psychotherapy, Otto-von-Guericke University of Magdeburg, Magdeburg, Germany
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37
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Poprawski TJ, Lonser KA, Korpics J, Zadecki J, Crayton JW, Halaris A, Konopka LM. Intensity-Dependent Auditory Evoked Potential Defines Subgroups of Patients with PTSD: A Multimodality Imaging Study. ACTA ACUST UNITED AC 2017. [DOI: 10.1007/bf03379927] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Abstract
Post Traumatic Stress Disorder (PTSD) is a complex and heterogeneous psychiatric disorder. Patients with chronic PTSD present with significant psychiatric co-morbidities. Current treatment guidelines recommend the use of selective serotonin reuptake inhibitors in PTSD patients, but only 50–60% of these patients respond favorably. To improve the response rate, understanding the underlying pathophysiology is necessary. Serotonergic transmission has been implicated in PTSD and the intensity-dependent auditory evoked potential (IDAEP) is presumed to reflect central serotonergic activity, thereby providing an opportunity to more precisely characterize PTSD patient populations and possibly predict response to treatment. We studied nineteen patients diagnosed with PTSD, matched for age and medications. Based on the stimulus intensity relationship, the patients were divided into two groups: augmenters and reducers. These groups were further evaluated using resting state quantitative EEG and HMPAO-based SPECT brain perfusion acquired simultaneously. The imaging data were correlated with behavioral measures characterizing symptoms of PTSD and measurements of mood state. The augmenters differed from the reducers in the resting state quantitative EEG and SPECT perfusion measures. The differences were primarily localized to the right hemisphere. There were significant differences in measures of PTSD symptoms, but not in overall measures of depression. Item analysis of depression measures showed a significant difference between the augmenters and the reducers in reported sleep difficulties, which correlated with the reported anxiety measures. Objective separation of patients into subgroups based on the IDAEP contributes to the understanding of PTSD biological substrate and can potentially lead to more effective treatment strategies.
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Mumtaz W, Xia L, Mohd Yasin MA, Azhar Ali SS, Malik AS. A wavelet-based technique to predict treatment outcome for Major Depressive Disorder. PLoS One 2017; 12:e0171409. [PMID: 28152063 PMCID: PMC5289714 DOI: 10.1371/journal.pone.0171409] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 01/20/2017] [Indexed: 11/18/2022] Open
Abstract
Treatment management for Major Depressive Disorder (MDD) has been challenging. However, electroencephalogram (EEG)-based predictions of antidepressant’s treatment outcome may help during antidepressant’s selection and ultimately improve the quality of life for MDD patients. In this study, a machine learning (ML) method involving pretreatment EEG data was proposed to perform such predictions for Selective Serotonin Reuptake Inhibitor (SSRIs). For this purpose, the acquisition of experimental data involved 34 MDD patients and 30 healthy controls. Consequently, a feature matrix was constructed involving time-frequency decomposition of EEG data based on wavelet transform (WT) analysis, termed as EEG data matrix. However, the resultant EEG data matrix had high dimensionality. Therefore, dimension reduction was performed based on a rank-based feature selection method according to a criterion, i.e., receiver operating characteristic (ROC). As a result, the most significant features were identified and further be utilized during the training and testing of a classification model, i.e., the logistic regression (LR) classifier. Finally, the LR model was validated with 100 iterations of 10-fold cross-validation (10-CV). The classification results were compared with short-time Fourier transform (STFT) analysis, and empirical mode decompositions (EMD). The wavelet features extracted from frontal and temporal EEG data were found statistically significant. In comparison with other time-frequency approaches such as the STFT and EMD, the WT analysis has shown highest classification accuracy, i.e., accuracy = 87.5%, sensitivity = 95%, and specificity = 80%. In conclusion, significant wavelet coefficients extracted from frontal and temporal pre-treatment EEG data involving delta and theta frequency bands may predict antidepressant’s treatment outcome for the MDD patients.
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Affiliation(s)
- Wajid Mumtaz
- Centre for Intelligent Signal and Imaging Research (CISIR),Universiti Teknologi PETRONAS, Bandar Seri Iskandar, Perak, Malaysia
| | - Likun Xia
- Beijing Institute of Technology, Beijing, China
| | - Mohd Azhar Mohd Yasin
- Department of Psychiatry,Universiti Sains Malaysia, Jalan Hospital Universiti Sains Malaysia, Kubang Kerian, Kota Bharu, Kelantan, Malaysia
| | - Syed Saad Azhar Ali
- Centre for Intelligent Signal and Imaging Research (CISIR),Universiti Teknologi PETRONAS, Bandar Seri Iskandar, Perak, Malaysia
| | - Aamir Saeed Malik
- Centre for Intelligent Signal and Imaging Research (CISIR),Universiti Teknologi PETRONAS, Bandar Seri Iskandar, Perak, Malaysia
- * E-mail:
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39
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De Pascalis V, Fracasso F, Corr PJ. The behavioral approach system and augmenting/reducing in auditory event-related potentials during emotional visual stimulation. Biol Psychol 2016; 123:310-323. [PMID: 27816656 DOI: 10.1016/j.biopsycho.2016.10.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2016] [Revised: 10/29/2016] [Accepted: 10/29/2016] [Indexed: 10/20/2022]
Abstract
In the recent Reinforcement Sensitivity Theory Personality Questionnaire (RST-PQ, Corr and Cooper, 2016) the behavioral approach system (BAS) has been conceptualized as multidimensional in which facets of reward interest and reactivity, and goal-drive persistence, are separate from impulsivity. Aim of the present work was to highlight the predictive power of BAS and its facets in differentiating electrocortical responses by using an auditory augmenting/reducing event-related potential (ERP) paradigm during emotional visual stimulation. ERPs were recorded for 5 levels of intensity in 39 women. The RST-PQ was used to measure the total BAS (T-BAS) and its four facets of Goal-Drive Persistence (GDP), Reward Interest (RI), Reward Reactivity (RR), and Impulsivity (IMP). T-BAS and RI, and to a less extent GDP and RR, were significantly associated with higher N1/P2 amplitudes at central sites (C3, Cz, C4) across neutral, positive and negative slides. Similar, but less pronounced relations were found for GDP and RR, but this relation was lacking for Imp facet. In addition, N1/P2 slope at central sites was positively correlated with T-BAS, GDP, RI, RR, but not Imp. Indeed, T-BAS facets failed to maintain a significant correlation with N1/P2 slope, after controlling for T-BAS residual scores, indicating that T-BAS drives these significant correlations. LORETA analysis at 219ms (P2 wave) from tone onset revealed a significant activation of the right inferior parietal lobule (IPL, BA40) and left anterior cingulate gyrus (BA32) in high T-BAS compared to low T-BAS participants. Results are discussed within a revised RST framework differentiating reward components from impulsivity.
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Affiliation(s)
| | | | - Philip J Corr
- Department of Psychology, City University London, London, United Kingdom
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40
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Olbrich S, van Dinteren R, Arns M. Personalized Medicine: Review and Perspectives of Promising Baseline EEG Biomarkers in Major Depressive Disorder and Attention Deficit Hyperactivity Disorder. Neuropsychobiology 2016; 72:229-40. [PMID: 26901357 DOI: 10.1159/000437435] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 07/06/2015] [Indexed: 11/19/2022]
Abstract
Personalized medicine in psychiatry is in need of biomarkers that resemble central nervous system function at the level of neuronal activity. Electroencephalography (EEG) during sleep or resting-state conditions and event-related potentials (ERPs) have not only been used to discriminate patients from healthy subjects, but also for the prediction of treatment outcome in various psychiatric diseases, yielding information about tailored therapy approaches for an individual. This review focuses on baseline EEG markers for two psychiatric conditions, namely major depressive disorder and attention deficit hyperactivity disorder. It covers potential biomarkers from EEG sleep research and vigilance regulation, paroxysmal EEG patterns and epileptiform discharges, quantitative EEG features within the EEG main frequency bands, connectivity markers and ERP components that might help to identify favourable treatment outcome. Further, the various markers are discussed in the context of their potential clinical value and as research domain criteria, before giving an outline for future studies that are needed to pave the way to an electrophysiological biomarker-based personalized medicine.
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41
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Pathak Y, Salami O, Baillet S, Li Z, Butson CR. Longitudinal Changes in Depressive Circuitry in Response to Neuromodulation Therapy. Front Neural Circuits 2016; 10:50. [PMID: 27524960 PMCID: PMC4965463 DOI: 10.3389/fncir.2016.00050] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 06/29/2016] [Indexed: 12/22/2022] Open
Abstract
Background: Major depressive disorder (MDD) is a public health problem worldwide. There is increasing interest in using non-invasive therapies such as repetitive transcranial magnetic stimulation (rTMS) to treat MDD. However, the changes induced by rTMS on neural circuits remain poorly characterized. The present study aims to test whether the brain regions previously targeted by deep brain stimulation (DBS) in the treatment of MDD respond to rTMS, and whether functional connectivity (FC) measures can predict clinical response. Methods: rTMS (20 sessions) was administered to five MDD patients at the left-dorsolateral prefrontal cortex (L-DLPFC) over 4 weeks. Magnetoencephalography (MEG) recordings and Montgomery-Asberg depression rating scale (MADRS) assessments were acquired before, during and after treatment. Our primary measures, obtained with MEG source imaging, were changes in power spectral density (PSD) and changes in FC as measured using coherence. Results: Of the five patients, four met the clinical response criterion (40% or greater decrease in MADRS) after 4 weeks of treatment. An increase in gamma power at the L-DLPFC was correlated with improvement in symptoms. We also found that increases in delta band connectivity between L-DLPFC/amygdala and L-DLPFC/pregenual anterior cingulate cortex (pACC), and decreases in gamma band connectivity between L-DLPFC/subgenual anterior cingulate cortex (sACC), were correlated with improvements in depressive symptoms. Conclusions: Our results suggest that non-invasive intervention techniques, such as rTMS, modulate the ongoing activity of depressive circuits targeted for DBS, and that MEG can capture these changes. Gamma oscillations may originate from GABA-mediated inhibition, which increases synchronization of large neuronal populations, possibly leading to increased long-range FC. We postulate that responses to rTMS could provide valuable insights into early evaluation of patient candidates for DBS surgery.
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Affiliation(s)
- Yagna Pathak
- Department of Biomedical Engineering, Marquette University Milwaukee, WI, USA
| | - Oludamilola Salami
- Department of Psychiatry, Medical College of Wisconsin Milwaukee, WI, USA
| | - Sylvain Baillet
- McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University Montreal, QC, Canada
| | - Zhimin Li
- Department of Neurology, Medical College of Wisconsin Milwaukee, WI, USA
| | - Christopher R Butson
- Department of Biomedical Engineering, Marquette UniversityMilwaukee, WI, USA; Department of Psychiatry, Medical College of WisconsinMilwaukee, WI, USA; Department of Neurology, Medical College of WisconsinMilwaukee, WI, USA; Department of Bioengineering, Scientific Computing and Imaging (SCI) Institute, University of UtahSalt Lake City, UT, USA
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42
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Wade EC, Iosifescu DV. Using Electroencephalography for Treatment Guidance in Major Depressive Disorder. BIOLOGICAL PSYCHIATRY: COGNITIVE NEUROSCIENCE AND NEUROIMAGING 2016; 1:411-422. [PMID: 29560870 DOI: 10.1016/j.bpsc.2016.06.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 05/06/2016] [Accepted: 06/01/2016] [Indexed: 01/12/2023]
Abstract
Given the high prevalence of treatment-resistant depression and the long delays in finding effective treatments via trial and error, valid biomarkers of treatment outcome with the ability to guide treatment selection represent one of the most important unmet needs in mood disorders. A large body of research has investigated, for this purpose, biomarkers derived from electroencephalography (EEG), using resting state EEG or evoked potentials. Most studies have focused on specific EEG features (or combinations thereof), whereas more recently machine-learning approaches have been used to define the EEG features with the best predictive abilities without a priori hypotheses. While reviewing these different approaches, we have focused on the predictor characteristics and the quality of the supporting evidence.
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Affiliation(s)
- Elizabeth C Wade
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Dan V Iosifescu
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York.
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43
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Jawinski P, Mauche N, Ulke C, Huang J, Spada J, Enzenbach C, Sander C, Hegerl U, Hensch T. Tobacco use is associated with reduced amplitude and intensity dependence of the cortical auditory evoked N1-P2 component. Psychopharmacology (Berl) 2016; 233:2173-2183. [PMID: 26983415 DOI: 10.1007/s00213-016-4268-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 03/02/2016] [Indexed: 10/22/2022]
Abstract
RATIONALE Tobacco use is linked to cerebral atrophy and reduced cognitive performance in later life. However, smoking-related long-term effects on brain function remain largely uncertain. Previous studies suggest that nicotine affects serotonergic signaling, and the intensity dependence (alias loudness dependence) of the auditory evoked N1-P2 potential has been proposed as a marker of serotonergic neurotransmission. OBJECTIVE In the present study, we assesed the effects of chronic smoking on amplitude and intensity dependence of the auditory evoked N1-P2 potential. METHODS Subjects underwent a 15-min intensity dependence of auditory evoked potentials (IAEP) paradigm. From N = 1739 eligible subjects (40-79 years), we systematically matched current smokers, ex-smokers, and never-smokers by sex, age, alcohol and caffeine consumption, and socioeconomic status. Between-group differences and potential dose-dependencies were evaluated. RESULTS Analyses revealed higher N1-P2 amplitudes and intensity dependencies in never-smokers relative to ex- and current smokers, with ex-smokers exhibiting intermediate intensity dependencies. Moreover, we observed pack years and number of cigarettes consumed per day to be inversely correlated with amplitudes in current smokers. CONCLUSIONS According to the IAEP serotonin hypothesis, our results suggest serotonin activity to be highest in current smokers, intermediate in ex-smokers, and lowest in never-smokers. To our knowledge, the present study is the first providing evidence for a dose-dependent reduction in N1-P2 amplitudes. Further, we extend prior research by showing reduced amplitudes and intensity dependencies in ex-smokers even 25 years, on average, after cessation. While we can rule out several smoking-related confounders to bias observed associations, causal inferences remain to be established by future longitudinal studies.
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Affiliation(s)
- Philippe Jawinski
- LIFE - Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany. .,Department of Psychiatry and Psychotherapy, University of Leipzig, Leipzig, Germany. .,Depression Research Center of the German Depression Foundation, Leipzig, Germany.
| | - Nicole Mauche
- LIFE - Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany.,Department of Psychiatry and Psychotherapy, University of Leipzig, Leipzig, Germany
| | - Christine Ulke
- LIFE - Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany.,Depression Research Center of the German Depression Foundation, Leipzig, Germany
| | - Jue Huang
- Department of Psychiatry and Psychotherapy, University of Leipzig, Leipzig, Germany
| | - Janek Spada
- Department of Psychiatry and Psychotherapy, University of Leipzig, Leipzig, Germany.,Depression Research Center of the German Depression Foundation, Leipzig, Germany
| | - Cornelia Enzenbach
- LIFE - Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany.,Institute for Medical Informatics, Statistics and Epidemiology, University of Leipzig, Leipzig, Germany
| | - Christian Sander
- LIFE - Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany.,Department of Psychiatry and Psychotherapy, University of Leipzig, Leipzig, Germany.,Depression Research Center of the German Depression Foundation, Leipzig, Germany
| | - Ulrich Hegerl
- LIFE - Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany.,Department of Psychiatry and Psychotherapy, University of Leipzig, Leipzig, Germany.,Depression Research Center of the German Depression Foundation, Leipzig, Germany
| | - Tilman Hensch
- LIFE - Leipzig Research Center for Civilization Diseases, University of Leipzig, Leipzig, Germany.,Department of Psychiatry and Psychotherapy, University of Leipzig, Leipzig, Germany
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44
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Papesh MA, Hurley LM. Modulation of auditory brainstem responses by serotonin and specific serotonin receptors. Hear Res 2015; 332:121-136. [PMID: 26688176 DOI: 10.1016/j.heares.2015.11.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2015] [Revised: 10/28/2015] [Accepted: 11/23/2015] [Indexed: 11/16/2022]
Abstract
The neuromodulator serotonin is found throughout the auditory system from the cochlea to the cortex. Although effects of serotonin have been reported at the level of single neurons in many brainstem nuclei, how these effects correspond to more integrated measures of auditory processing has not been well-explored. In the present study, we aimed to characterize the effects of serotonin on far-field auditory brainstem responses (ABR) across a wide range of stimulus frequencies and intensities. Using a mouse model, we investigated the consequences of systemic serotonin depletion, as well as the selective stimulation and suppression of the 5-HT1 and 5-HT2 receptors, on ABR latency and amplitude. Stimuli included tone pips spanning four octaves presented over a forty dB range. Depletion of serotonin reduced the ABR latencies in Wave II and later waves, suggesting that serotonergic effects occur as early as the cochlear nucleus. Further, agonists and antagonists of specific serotonergic receptors had different profiles of effects on ABR latencies and amplitudes across waves and frequencies, suggestive of distinct effects of these agents on auditory processing. Finally, most serotonergic effects were more pronounced at lower ABR frequencies, suggesting larger or more directional modulation of low-frequency processing. This is the first study to describe the effects of serotonin on ABR responses across a wide range of stimulus frequencies and amplitudes, and it presents an important step in understanding how serotonergic modulation of auditory brainstem processing may contribute to modulation of auditory perception.
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Affiliation(s)
- Melissa A Papesh
- Indiana University, Department of Speech and Hearing Sciences, 200 South Jordan Avenue, Bloomington, IN 47405, USA.
| | - Laura M Hurley
- Indiana University, Department of Biology, Center for the Integrative Study of Animal Behavior, 1001 E. Third Street, Bloomington, IN 47405, USA
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45
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Hagenmuller F, Heekeren K, Meier M, Theodoridou A, Walitza S, Haker H, Rössler W, Kawohl W. The Loudness Dependence of Auditory Evoked Potentials (LDAEP) in individuals at risk for developing bipolar disorders and schizophrenia. Clin Neurophysiol 2015; 127:1342-1350. [PMID: 26639170 DOI: 10.1016/j.clinph.2015.10.050] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 10/14/2015] [Accepted: 10/28/2015] [Indexed: 01/23/2023]
Abstract
OBJECTIVES The Loudness Dependence of Auditory Evoked Potentials (LDAEP) is considered as an indicator of central serotonergic activity. Alteration of serotonergic neurotransmission was reported in bipolar disorders and schizophrenia. In line with previous reports on clinically manifest disorders, we expected a weaker LDAEP in subjects at risk for bipolar disorders and schizophrenia compared to healthy controls. METHODS We analyzed LDAEP of individuals at risk for developing bipolar disorders (n=27), with high-risk status (n=74) and ultra-high-risk status for schizophrenia (n=86) and healthy controls (n=47). RESULTS The LDAEP did not differ between subjects at risk for schizophrenia or bipolar disorders and controls. Among subjects without medication (n=122), the at-risk-bipolar group showed a trend towards a weaker LDAEP than both the high-risk and the ultra-high-risk groups for schizophrenia. CONCLUSIONS The LDAEP did not appear as a vulnerability marker for schizophrenia or bipolar disorders. This suggests that an altered LDAEP may not be measurable until the onset of clinically manifest disorder. However, the hypothesis that pathogenic mechanisms leading to bipolar disorders may differ from those leading to schizophrenia is supported. SIGNIFICANCE This is the first study investigating LDAEP in a population at risk for bipolar disorders.
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Affiliation(s)
- Florence Hagenmuller
- The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland; Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland
| | - Karsten Heekeren
- The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland; Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland
| | - Magali Meier
- The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland
| | - Anastasia Theodoridou
- The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland; Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland
| | - Susanne Walitza
- The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland; Department of Child and Adolescent Psychiatry, University of Zurich, Zurich, Switzerland
| | - Helene Haker
- The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland; Translational Neuromodeling Unit, Institute for Biomedical Engineering, University of Zurich and ETH Zurich, Zurich, Switzerland
| | - Wulf Rössler
- The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland; Institute of Psychiatry, Laboratory of Neuroscience (LIM 27), University of Sao Paulo, Brazil
| | - Wolfram Kawohl
- The Zurich Program for Sustainable Development of Mental Health Services (ZInEP), University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland; Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland.
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46
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van Dinteren R, Arns M, Kenemans L, Jongsma MLA, Kessels RPC, Fitzgerald P, Fallahpour K, Debattista C, Gordon E, Williams LM. Utility of event-related potentials in predicting antidepressant treatment response: An iSPOT-D report. Eur Neuropsychopharmacol 2015; 25:1981-90. [PMID: 26282359 DOI: 10.1016/j.euroneuro.2015.07.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Revised: 07/03/2015] [Accepted: 07/28/2015] [Indexed: 12/28/2022]
Abstract
It is essential to improve antidepressant treatment of major depressive disorder (MDD) and one way this could be achieved is by reducing the number of treatment steps by employing biomarkers that can predict treatment outcome. This study investigated differences between MDD patients and healthy controls in the P3 and N1 component from the event-related potential (ERP) generated in a standard two-tone oddball paradigm. Furthermore, the P3 and N1 are investigated as predictors for treatment outcome to three different antidepressants. In the international Study to Predict Optimized Treatment in Depression (iSPOT-D)--a multi-center, international, randomized, prospective practical trial--1008 MDD participants were randomized to escitalopram, sertraline or venlafaxine-XR. The study also recruited 336 healthy controls. Treatment response and remission were established after eight weeks using the 17-item Hamilton Rating Scale for Depression. P3 and N1 latencies and amplitudes were analyzed using a peak-picking approach and further replicated by using exact low resolution tomography (eLORETA). A reduced P3 was found in MDD patients compared to controls by a peak-picking analysis. This was validated in a temporal global field power analysis. Source density analysis revealed that the difference in cortical activity originated from the posterior cingulate and parahippocampal gyrus. Male non-responders to venlafaxine-XR had significantly smaller N1 amplitudes than responders. This was demonstrated by both analytical methods. Male non-responders to venlafaxine-XR had less activity originating from the left insular cortex. The observed results are discussed from a neural network viewpoint.
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Affiliation(s)
- Rik van Dinteren
- Donders Institute for Brain Cognition and Behaviour, Radboud University Nijmegen, Nijmegen, The Netherlands; Research Institute Brainclinics, Nijmegen, The Netherlands
| | - Martijn Arns
- Research Institute Brainclinics, Nijmegen, The Netherlands; Department of Experimental Psychology, Utrecht University, Utrecht, The Netherlands.
| | - Leon Kenemans
- Department of Experimental Psychology, Utrecht University, Utrecht, The Netherlands
| | - Marijtje L A Jongsma
- Behavioural Science Institute, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - Roy P C Kessels
- Donders Institute for Brain Cognition and Behaviour, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - Paul Fitzgerald
- Monash Alfred Psychiatry Research Centre, Monash University Central Clinical School and the Alfred, Melbourne, Vic., Australia
| | - Kamran Fallahpour
- Department of Psychiatry at the Icahn School of Medicine at Mount Sinai, New York, NY, USA; Brain Resource Center, New York, USA
| | - Charles Debattista
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA, USA
| | - Evian Gordon
- Brain Resource, Sydney, NSW, Australia and San Francisco, CA, USA
| | - Leanne M Williams
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA, USA; Veterans Affairs Palo Alto Healthcare System, and the Sierra Pacific Mental Illness, Research, Education, and Clinical Center (MIRECC), Palo Alto, CA, USA
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Todd NPM, Lee CS. Source analysis of electrophysiological correlates of beat induction as sensory-guided action. Front Psychol 2015; 6:1178. [PMID: 26321991 PMCID: PMC4536380 DOI: 10.3389/fpsyg.2015.01178] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 07/27/2015] [Indexed: 11/13/2022] Open
Abstract
In this paper we present a reanalysis of electrophysiological data originally collected to test a sensory-motor theory of beat induction (Todd et al., 2002; Todd and Seiss, 2004; Todd and Lee, 2015). The reanalysis is conducted in the light of more recent findings and in particular the demonstration that auditory evoked potentials contain a vestibular dependency. At the core of the analysis is a model which predicts brain dipole source current activity over time in temporal and frontal lobe areas during passive listening to a rhythm, or active synchronization, where it dissociates the frontal activity into distinct sources which can be identified as respectively pre-motor and motor in origin. The model successfully captures the main features of the rhythm in showing that the metrical structure is manifest in an increase in source current activity during strong compared to weak beats. In addition the outcomes of modeling suggest that: (1) activity in both temporal and frontal areas contribute to the metrical percept and that this activity is distributed over time; (2) transient, time-locked activity associated with anticipated beats is increased when a temporal expectation is confirmed following a previous violation, such as a syncopation; (3) two distinct processes are involved in auditory cortex, corresponding to tangential and radial (possibly vestibular dependent) current sources. We discuss the implications of these outcomes for the insights they give into the origin of metrical structure and the power of syncopation to induce movement and create a sense of groove.
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Affiliation(s)
- Neil P. M. Todd
- Faculty of Life Science, University of ManchesterManchester, UK
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Paiva TO, Almeida PR, Ferreira-Santos F, Vieira JB, Silveira C, Chaves PL, Barbosa F, Marques-Teixeira J. Similar sound intensity dependence of the N1 and P2 components of the auditory ERP: Averaged and single trial evidence. Clin Neurophysiol 2015; 127:499-508. [PMID: 26154993 DOI: 10.1016/j.clinph.2015.06.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 05/08/2015] [Accepted: 06/16/2015] [Indexed: 10/23/2022]
Abstract
OBJECTIVE The literature suggests that the N1 and P2 waves of the auditory ERP are dissociable at the developmental, experimental, and source levels. At the experimental level, inconsistent findings suggest different effects of intensity on the amplitudes of the auditory N1 and P2. Our main goal was to analyze the intensity dependence of the auditory N1 and P2 while controlling for habituation effects. METHODS We examined the intensity dependence of both averaged and single-trial auditory N1 and P2 waves elicited in a repeated-stimulation protocol. RESULTS N1 and P2 revealed similar intensity dependence on both standard and filter denoised ERP, with a linear tendency for higher intensities to elicit higher absolute peak amplitudes. At the single-trial level, both waves covary irrespective of stimulus intensity and trial order. CONCLUSIONS Our results suggest that stimulus intensity variation induces similar effects on both and N1 and P2 and partially contradict previous data that classified the P2 as a non-habituating component. SIGNIFICANCE Our findings contribute to the ongoing discussion on the functional significance of the auditory P2 deflection. In addition, the present work demonstrated the applicability of a filter denoising method for single-trial estimation in the analysis of the experimental effects on auditory ERP components.
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Affiliation(s)
- Tiago O Paiva
- Laboratory of Neuropsychophysiology, Faculty of Psychology and Education Sciences of the University of Porto, Portugal; Faculty of Medicine of the University of Porto, Portugal.
| | - Pedro R Almeida
- Laboratory of Neuropsychophysiology, Faculty of Psychology and Education Sciences of the University of Porto, Portugal; School of Criminology, Faculty of Law of the University of Porto, Portugal
| | - Fernando Ferreira-Santos
- Laboratory of Neuropsychophysiology, Faculty of Psychology and Education Sciences of the University of Porto, Portugal
| | - Joana B Vieira
- The Brain and Mind Institute, University of Western Ontario, Canada
| | | | - Pedro L Chaves
- Laboratory of Neuropsychophysiology, Faculty of Psychology and Education Sciences of the University of Porto, Portugal; Faculty of Medicine of the University of Porto, Portugal; Mind, Brain Imaging and Neuroethics Research Unit, University of Ottawa Institute of Mental Health Research, Ottawa, Canada
| | - Fernando Barbosa
- Laboratory of Neuropsychophysiology, Faculty of Psychology and Education Sciences of the University of Porto, Portugal
| | - João Marques-Teixeira
- Laboratory of Neuropsychophysiology, Faculty of Psychology and Education Sciences of the University of Porto, Portugal
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Prediction of long-term treatment response to selective serotonin reuptake inhibitors (SSRIs) using scalp and source loudness dependence of auditory evoked potentials (LDAEP) analysis in patients with major depressive disorder. Int J Mol Sci 2015; 16:6251-65. [PMID: 25794285 PMCID: PMC4394530 DOI: 10.3390/ijms16036251] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 02/27/2015] [Accepted: 03/12/2015] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Animal and clinical studies have demonstrated that the loudness dependence of auditory evoked potentials (LDAEP) is inversely related to central serotonergic activity, with a high LDAEP reflecting weak serotonergic neurotransmission and vice versa, though the findings in humans have been less consistent. In addition, a high pretreatment LDAEP appears to predict a favorable response to antidepressant treatments that augment the actions of serotonin. The aim of this study was to test whether the baseline LDAEP is correlated with response to long-term maintenance treatment in patients with major depressive disorder (MDD). METHODS Scalp N1, P2 and N1/P2 LDAEP and standardized low resolution brain electromagnetic tomography-localized N1, P2, and N1/P2 LDAEP were evaluated in 41 MDD patients before and after they received antidepressant treatment (escitalopram (n = 32, 10.0 ± 4.0 mg/day), sertraline (n = 7, 78.6 ± 26.7 mg/day), and paroxetine controlled-release formulation (n = 2, 18.8 ± 8.8 mg/day)) for more than 12 weeks. A treatment response was defined as a reduction in the Beck Depression Inventory (BDI) score of >50% between baseline and follow-up. RESULTS The responders had higher baseline scalp P2 and N1/P2 LDAEP than nonresponders (p = 0.017; p = 0.036). In addition, changes in total BDI score between baseline and follow-up were larger in subjects with a high baseline N1/P2 LDAEP than those with a low baseline N1/P2 LDAEP (p = 0.009). There were significantly more responders in the high-LDAEP group than in the low-LDAEP group (p = 0.041). CONCLUSIONS The findings of this study reveal that a high baseline LDAEP is associated with a clinical response to long-term antidepressant treatment.
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