1
|
Falivene A, Cantiani C, Dondena C, Riboldi EM, Riva V, Piazza C. EEG Functional Connectivity Analysis for the Study of the Brain Maturation in the First Year of Life. SENSORS (BASEL, SWITZERLAND) 2024; 24:4979. [PMID: 39124026 PMCID: PMC11314780 DOI: 10.3390/s24154979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2024] [Revised: 07/23/2024] [Accepted: 07/29/2024] [Indexed: 08/12/2024]
Abstract
Brain networks are hypothesized to undergo significant changes over development, particularly during infancy. Thus, the aim of this study is to evaluate brain maturation in the first year of life in terms of electrophysiological (EEG) functional connectivity (FC). Whole-brain FC metrics (i.e., magnitude-squared coherence, phase lag index, and parameters derived from graph theory) were extracted, for multiple frequency bands, from baseline EEG data recorded from 146 typically developing infants at 6 (T6) and 12 (T12) months of age. Generalized linear mixed models were used to test for significant differences in the computed metrics considering time point and sex as fixed effects. Correlational analyses were performed to ascertain the potential relationship between FC and subjects' cognitive and language level, assessed with the Bayley-III scale at 24 (T24) months of age. The results obtained highlighted an increased FC, for all the analyzed frequency bands, at T12 with respect to T6. Correlational analyses yielded evidence of the relationship between FC metrics at T12 and cognition. Despite some limitations, our study represents one of the first attempts to evaluate brain network evolution during the first year of life while accounting for correspondence between functional maturation and cognitive improvement.
Collapse
Affiliation(s)
| | - Chiara Cantiani
- Scientific Institute IRCCS E. Medea, 23842 Bosisio Parini, Italy; (A.F.); (C.D.); (E.M.R.); (V.R.); (C.P.)
| | | | | | | | | |
Collapse
|
2
|
Kamiya C, Iwatani Y, Yoshimoto S, Taniguchi H, Kitabatake Y, Kagitani-Shimono K. Inter-hemispheric somatosensory coherence and parental stress in hypersensitivity at 8 months old: An electroencephalography study. Clin Neurophysiol 2024; 163:185-196. [PMID: 38759514 DOI: 10.1016/j.clinph.2024.04.015] [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: 12/26/2023] [Revised: 04/03/2024] [Accepted: 04/17/2024] [Indexed: 05/19/2024]
Abstract
OBJECTIVE Infant hypersensitivity affects daily challenges and parental stress. Although the crucial role of tactile sensation in infants' brain function has been highlighted, hypersensitive infants and their families lack support. Electroencephalography may be useful for understanding hypersensitivity traits. We investigated the relationship between infant perceptual hypersensitivity and parental stress, somatosensory-evoked potential (SEP), and magnitude-squared coherence (MSC) in the general population. METHODS Infants aged 8 months (n = 63) were evaluated for hypersensitivity and parental stress using a questionnaire and for cortical activity using electroencephalography. Vibration stimuli were applied to the infant's left foot. SEP components that peaked around 150 ms (N2) and at 200 ms (P2) after stimulus onset were evaluated by amplitude and latency at the midline electrode (Cz) and MSC between the midline electrodes (C3-C4). RESULTS Parental stress was associated with infant hypersensitivity. The latency of Cz was delayed, and C3-C4 delta MSC was high in infants with hypersensitivity. CONCLUSIONS Increasing inter-hemispheric MSC synchrony in the stimulated condition in infants with hypersensitivity suggested atypical somatosensory cortical function. SIGNIFICANCE These findings contribute to identifying, understanding the mechanisms of, and developing effective coping strategies for early-stage hypersensitivity.
Collapse
Affiliation(s)
- Chiori Kamiya
- Division of Developmental Neuroscience, United Graduate School of Child Development, Osaka University, 2-2, Yamadaoka, Suita City, Osaka Prefecture 565-0871, Japan
| | - Yoshiko Iwatani
- Division of Developmental Neuroscience, United Graduate School of Child Development, Osaka University, 2-2, Yamadaoka, Suita City, Osaka Prefecture 565-0871, Japan; Molecular Research Center for Children's Mental Development, United Graduate School of Child Development, Osaka University, 2-2, Yamadaoka, Suita City, Osaka Prefecture 565-0871, Japan; Department of Pediatrics, Graduate School of Medicine, Osaka University, 2-15, Yamadaoka, Suita City, Osaka Prefecture, 565-0871, Japan
| | - Shunsuke Yoshimoto
- Department of Human and Engineered Environmental Studies, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa City, Chiba Prefecture, Japan
| | - Hidetoshi Taniguchi
- Department of Pediatrics, Graduate School of Medicine, Osaka University, 2-15, Yamadaoka, Suita City, Osaka Prefecture, 565-0871, Japan; Izumi Pediatric and Rehabilitation Clinic, 2-1-1, Higashiyama, Kaizuka City, Osaka Prefecture, Japan
| | - Yasuji Kitabatake
- Department of Pediatrics, Graduate School of Medicine, Osaka University, 2-15, Yamadaoka, Suita City, Osaka Prefecture, 565-0871, Japan
| | - Kuriko Kagitani-Shimono
- Division of Developmental Neuroscience, United Graduate School of Child Development, Osaka University, 2-2, Yamadaoka, Suita City, Osaka Prefecture 565-0871, Japan; Molecular Research Center for Children's Mental Development, United Graduate School of Child Development, Osaka University, 2-2, Yamadaoka, Suita City, Osaka Prefecture 565-0871, Japan; Department of Pediatrics, Graduate School of Medicine, Osaka University, 2-15, Yamadaoka, Suita City, Osaka Prefecture, 565-0871, Japan.
| |
Collapse
|
3
|
Multi-Region Local Field Potential Signatures in Response to the Formalin-induced Inflammatory Stimulus in Male Rats. Brain Res 2022; 1778:147779. [PMID: 35007546 DOI: 10.1016/j.brainres.2022.147779] [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: 12/09/2021] [Revised: 12/31/2021] [Accepted: 01/03/2022] [Indexed: 11/22/2022]
Abstract
Pain can be ignited by noxious chemical (e.g., acid), mechanical (e.g., pressure), and thermal (e.g., heat) stimuli and generated by the activation of sensory neurons and their axonal terminals called nociceptors in the periphery. Nociceptive information transmitted from the periphery is projected to the central nervous system (thalamus, somatosensory cortex, insular, anterior cingulate cortex, amygdala, periaqueductal grey, prefrontal cortex, etc.) to generate a unified experience of pain. Local field potential (LFP) recording is one of the neurophysiological tools to investigate the combined neuronal activity, ranging from several hundred micrometers to a few millimeters (radius), located around the embedded electrode. The advantage of recording LFP is that it provides stable simultaneous activities in various brain regions in response to external stimuli. In this study, differential LFP activities from the contralateral anterior cingulate cortex (ACC), ventral tegmental area (VTA), and bilateral amygdala in response to peripheral noxious formalin injection were recorded in anesthetized male rats. The results indicated increased power of delta, theta, alpha, beta, and gamma bands in the ACC and amygdala but no change of gamma-band in the right amygdala. Within the VTA, intensities of the delta, theta, and beta bands were only enhanced significantly after formalin injection. It was found that the connectivity (i.t. the coherence) among these brain regions reduced significantly under the formalin-induced nociception, which suggests a significant interruption within the brain. With further study, it will sort out the key combination of structures that will serve as the signature for pain state.
Collapse
|
4
|
Grässler B, Herold F, Dordevic M, Gujar TA, Darius S, Böckelmann I, Müller NG, Hökelmann A. Multimodal measurement approach to identify individuals with mild cognitive impairment: study protocol for a cross-sectional trial. BMJ Open 2021; 11:e046879. [PMID: 34035103 PMCID: PMC8154928 DOI: 10.1136/bmjopen-2020-046879] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 05/11/2021] [Indexed: 12/26/2022] Open
Abstract
INTRODUCTION The diagnosis of mild cognitive impairment (MCI), that is, the transitory phase between normal age-related cognitive decline and dementia, remains a challenging task. It was observed that a multimodal approach (simultaneous analysis of several complementary modalities) can improve the classification accuracy. We will combine three noninvasive measurement modalities: functional near-infrared spectroscopy (fNIRS), electroencephalography and heart rate variability via ECG. Our aim is to explore neurophysiological correlates of cognitive performance and whether our multimodal approach can aid in early identification of individuals with MCI. METHODS AND ANALYSIS This study will be a cross-sectional with patients with MCI and healthy controls (HC). The neurophysiological signals will be measured during rest and while performing cognitive tasks: (1) Stroop, (2) N-back and (3) verbal fluency test (VFT). Main aims of statistical analysis are to (1) determine the differences in neurophysiological responses of HC and MCI, (2) investigate relationships between measures of cognitive performance and neurophysiological responses and (3) investigate whether the classification accuracy can be improved by using our multimodal approach. To meet these targets, statistical analysis will include machine learning approaches.This is, to the best of our knowledge, the first study that applies simultaneously these three modalities in MCI and HC. We hypothesise that the multimodal approach improves the classification accuracy between HC and MCI as compared with a unimodal approach. If our hypothesis is verified, this study paves the way for additional research on multimodal approaches for dementia research and fosters the exploration of new biomarkers for an early detection of nonphysiological age-related cognitive decline. ETHICS AND DISSEMINATION Ethics approval was obtained from the local Ethics Committee (reference: 83/19). Data will be shared with the scientific community no more than 1 year following completion of study and data assembly. TRIAL REGISTRATION NUMBER ClinicalTrials.gov, NCT04427436, registered on 10 June 2020, https://clinicaltrials.gov/ct2/show/study/NCT04427436.
Collapse
Affiliation(s)
- Bernhard Grässler
- Institute of Sport Science, Faculty of Humanities, Otto von Guericke University Magdeburg, Magdeburg, Germany
| | - Fabian Herold
- Department of Neuroprotection, German Centre for Neurodegenerative Diseases Site Magdeburg, Magdeburg, Germany
| | - Milos Dordevic
- Department of Neuroprotection, German Centre for Neurodegenerative Diseases Site Magdeburg, Magdeburg, Germany
| | - Tariq Ali Gujar
- Institute of Sport Science, Faculty of Humanities, Otto von Guericke University Magdeburg, Magdeburg, Germany
| | - Sabine Darius
- Occupational Medicine, Otto von Guericke University Medical Faculty, Magdeburg, Germany
| | - Irina Böckelmann
- Occupational Medicine, Otto von Guericke University Medical Faculty, Magdeburg, Germany
| | - Notger G Müller
- Department of Neuroprotection, German Centre for Neurodegenerative Diseases Site Magdeburg, Magdeburg, Germany
- Department of Neurology, Otto von Guericke University Medical Faculty, Magdeburg, Germany
| | - Anita Hökelmann
- Institute of Sport Science, Faculty of Humanities, Otto von Guericke University Magdeburg, Magdeburg, Germany
| |
Collapse
|