1 Event-Related Brain Potentials: an Introduction Michael G
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Human Cortical Oscillations: a Neuromagnetic View Through the Skull
R EVIEW R. Hari and R. Salmelin – Human cortical rhythms VA -IN S I N V Human cortical oscillations: a O E N I neuromagnetic view through the skull M G AG I N Riitta Hari and Riitta Salmelin The mammalian cerebral cortex generates a variety of rhythmic oscillations, detectable directly from the cortex or the scalp. Recent non-invasive recordings from intact humans, by means of neuromagnetometers with large sensor arrays, have shown that several regions of the healthy human cortex have their own intrinsic rhythms, typically 8–40 Hz in frequency, with modality- and frequency-specific reactivity. The conventional hypotheses about the functional significance of brain rhythms extend from epiphenomena to perceptual binding and object segmentation. Recent data indicate that some cortical rhythms can be related to periodic activity of peripheral sensor and effector organs. Trends Neurosci. (1997) 20, 44–49 EURONES IN THE HUMAN BRAIN, especially in signals can be identified easily. By contrast, MEG (and Nthalamic nuclei and in the cerebral cortex, ex- EEG) sensors pick up signals from extensive brain hibit intrinsic oscillations1–3, which probably form the regions, which might be even several centimetres basis for macroscopic rhythms, detectable with electro- away from the sensor. Therefore the sites of active encephalography (EEG) and magnetoencephalography neuronal populations have to be deduced from the (MEG). Analysis of cortical rhythms forms an essential measured signal distribution. Although this ‘inverse part of clinical EEG evaluation, which relies on corre- problem’ does not have a unique solution in the gen- lations between the signal phenomenology and brain eral case6,9, modelling the generators of MEG signals as disorders. -
Event-Related Potentials: General Aspects of Methodology and Quantification Marco Congedo, Fernando Lopes Da Silva
Event-related potentials: General aspects of methodology and quantification Marco Congedo, Fernando Lopes da Silva To cite this version: Marco Congedo, Fernando Lopes da Silva. Event-related potentials: General aspects of methodol- ogy and quantification. Donald L. Schomer and Fernando H. Lopes da Silva,. Niedermeyer’s Elec- troencephalography: Basic Principles, Clinical Applications, and Related Fields, 7th edition, Oxford University Press, 2018. hal-01953600 HAL Id: hal-01953600 https://hal.archives-ouvertes.fr/hal-01953600 Submitted on 13 Dec 2018 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Niedermeyer’s Electroencephalography: Basic Principles, Clinical Applications, and Related Fields, 7th edition. Edited by Donald L. Schomer and Fernando H. Lopes da Silva, Oxford University Press, 2018 Chapter # 36 – Event-related potentials: General aspects of methodology and quantification Marco Congedo, Ph.D.1, Fernando H. Lopes da Silva, M.D., Ph.D.2 1. GIPSA-lab, CNRS, Grenoble Alpes University, Polytechnic Institute of Grenoble, Grenoble, France. 2. Center of Neuroscience, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1090 GE Amsterdam, The Netherlands & Department of Bioengineering, Higher Technical Institute, University of Lisbon, Av. Rovisco Pais 1, 1049-001, Lisbon, Portugal. -
Brain Activity Relating to the Contingent Negative Variation: an Fmri Investigation
www.elsevier.com/locate/ynimg NeuroImage 21 (2004) 1232–1241 Brain activity relating to the contingent negative variation: an fMRI investigation Y. Nagai,a,* H.D. Critchley,b E. Featherstone,b P.B.C. Fenwick,c M.R. Trimble,a and R.J. Dolanb a Institute of Neurology, Department of Clinical and Experimental Epilepsy, London WC1N 3BG, UK b Wellcome Department of Imaging Neuroscience, Institute of Neurology, UCL, London WC1N 3BG, UK c Institute of Psychiatry, KCL, London SE5 8AF GB, UK Received 6 May 2003; revised 30 October 2003; accepted 31 October 2003 The contingent negative variation (CNV) is a long-latency electro- and S2) at the vertex, has been termed the ‘‘expectancy wave’’ encephalography (EEG) surface negative potential with cognitive and (Walter et al., 1964). A more general model of the CNVencapsulates motor components, observed during response anticipation. CNV is an a concept of cortical arousal related to anticipatory attention, index of cortical arousal during orienting and attention, yet its preparation, motivation, and information processing (Tecce, 1972). functional neuroanatomical basis is poorly understood. We used Neurophysiological studies indicate that cortical surface-nega- functional magnetic resonance imaging (fMRI) with simultaneous EEG and recording of galvanic skin response (GSR) to investigate tive potentials, such as the CNV, result from depolarization of CNV-related central neural activity and its relationship to peripheral apical dendrites of cortical pyramidal cells by thalamic afferents autonomic arousal. In a group analysis, blood oxygenation level and reflect excitation over an extended cortical area (Birbaumer et dependent (BOLD) activity during the period of CNV generation was al., 1990). -
Electroencephalographic Correlates of Temporal Bayesian Belief Updating and Surprise
Electroencephalographic Correlates of Temporal Bayesian Belief Updating and Surprise a,b,* a b,c d c,e Antonino Visalli , Mariagrazia Capizzi , Ettore Ambrosini , Bruno Kopp , Antonino Vallesi a Department of Neuroscience, University of Padova, 35128 Padova, Italy b Department of General Psychology, University of Padova, 35131 Padova, Italy c Department of Neuroscience & Padova Neuroscience Center, University of Padova, 35131 Padova, Italy d Department of Neurology, Hannover Medical School, 30625 Hannover, Germany e Brain Imaging and Neural Dynamics Research Group, IRCCS San Camillo Hospital, 30126 Venice, Italy *Address for correspondence: Antonino Visalli Department of Neuroscience, University of Padova Via Giustiniani 5, 35128 Padova, Italy Phone number: (+39) 049 8214450 Email: [email protected] 1 Abstract The brain predicts the timing of forthcoming events to optimize responses to them. Temporal predictions have been formalized in terms of the hazard function, which integrates prior beliefs on the likely timing of stimulus occurrence with information conveyed by the passage of time. However, how the human brain updates prior temporal beliefs is still elusive. Here we investigated electroencephalographic (EEG) signatures associated with Bayes-optimal updating of temporal beliefs. Given that updating usually occurs in response to surprising events, we sought to disentangle EEG correlates of updating from those associated with surprise. Twenty-siX participants performed a temporal foreperiod task, which comprised a subset of surprising events not eliciting updating. EEG data were analyzed through a regression-based massive approach in the electrode and source space. Distinct late positive, centro-parietally distributed, event-related potentials (ERPs) were associated with surprise and belief updating in the electrode space. -
Auditory P3a and P3b Neural Generators in Schizophrenia: an Adaptive Sloreta P300 Localization Approach
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by UPCommons. Portal del coneixement obert de la UPC This is an author-edited version of the accepted manuscript published in Schizophrenia Research. The final publication is available at Elsevier via http://dx.doi.org/10.1016/j.schres.2015.09.028 Auditory P3a and P3b neural generators in schizophrenia: An adaptive sLORETA P300 localization approach Alejandro Bachiller1, Sergio Romero2,3, Vicente Molina4,5, Joan F. Alonso2,3, Miguel A. Mañanas2,3, Jesús Poza1,5,6 and Roberto Hornero1,6 1 Biomedical Engineering Group, E.T.S. Ingenieros de Telecomunicación, Universidad de Valladolid, 47011 Valladolid, Spain. {[email protected]; [email protected]; [email protected]} 2 Department of Automatic Control (ESAII), Biomedical Engineering Research Center (CREB), Universitat Politècnica de Catalunya (UPC), 08028 Barcelona, Spain. {[email protected]; [email protected]; [email protected]} 3 CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN) 4 Psychiatry Department, Hospital Clínico Universitario, Facultad de Medicina, Universidad de Valladolid, 47005 Valladolid, Spain {[email protected]} 5 INCYL, Instituto de Neurociencias de Castilla y León, Universidad de Salamanca, 37007 Salamanca, Spain 6 IMUVA, Instituto de Investigación en Matemáticas, Universidad de Valladolid, 47011 Valladolid, Spain Corresponding author. Alejandro Bachiller, Biomedical Engineering Group, E.T.S. Ingenieros de Telecomunicación, Universidad de Valladolid, 47011 Valladolid, Spain Tel: +34 983423000 ext. 5589; fax: +34 983423667; Email address: [email protected] Abstract The present study investigates the neural substrates underlying cognitive processing in schizophrenia (Sz) patients. -
Stimulus Frequency and Masking As Determinants of P300 Latency in Event-Related Potentials from Auditory Stimuli *
Biological Psycho&v 21 (1985) 309-318 309 North-Holland STIMULUS FREQUENCY AND MASKING AS DETERMINANTS OF P300 LATENCY IN EVENT-RELATED POTENTIALS FROM AUDITORY STIMULI * John POLICH Department of Neurology, California College of Medicine, University of California, Irvine, CA 92717, U.S.A. Lawrence HOWARD School of Social Sciences, University of California, Irvine, CA 92717, U.S.A Arnold STARR Department of Neurology, California College of Medicine, University of Californra, twine, CA 92717, U.S.A. Accepted for publication 8 May 1985 The effects of target tone frequency, presence of a masking stimulus. and subject sex on the auditory ERP were studied with an ‘oddball’ paradigm. P300 latency became shorter (about 15 msec) as the difference between the standard (1000 Hz) and target tone frequency increased (1500, 2000, 4000 Hz) but became longer (about 10 msec) with the presence of a white noise masking stimulus. Similar results were obtained for both the P3a and P3b subcomponents of the P300 potential. No significant differences between the adult male and female subjects were observed. The role of stimulus parameters in applied testing situations is discussed. 1. Introduction The P300 component of the event-related brain potential (ERP) is a large (5-15 luv), positive-going waveform that occurs with a modal latency of about 300 msec in normal young adults. Although the neurophysiology underlying the P300 is still being explored (Halgren, Squires, Wilson, Rohrbaugh, Bab and Crandall, 1980; Okada, Kaufman and Williamson, 1983), the cognitive events associated with its generation have received considerable attention (Donchin, 1981; Donchin, Ritter and McCallum, 1978; Pritchard, 1981). -
Readiness Potentials Driven by Non-Motoric Processes ⇑ Prescott Alexander A,1, , Alexander Schlegel A,1, Walter Sinnott-Armstrong B, Adina L
Consciousness and Cognition 39 (2016) 38–47 Contents lists available at ScienceDirect Consciousness and Cognition journal homepage: www.elsevier.com/locate/concog Readiness potentials driven by non-motoric processes ⇑ Prescott Alexander a,1, , Alexander Schlegel a,1, Walter Sinnott-Armstrong b, Adina L. Roskies c, Thalia Wheatley a, Peter Ulric Tse a a Department of Psychological and Brain Sciences, Dartmouth College, HB 6207 Moore Hall, Hanover, NH 03755, USA b Philosophy Department and Kenan Institute for Ethics, Duke University, Box 90432, Durham, NC 27708, USA c Department of Philosophy, Dartmouth College, HB 6035 Thornton Hall, Hanover, NH 03755, USA article info abstract Article history: An increase in brain activity known as the ‘‘readiness potential” (RP) can be seen over cen- Received 14 June 2015 tral scalp locations in the seconds leading up to a volitionally timed movement. This activ- Revised 9 November 2015 ity precedes awareness of the ensuing movement by as much as two seconds and has been Accepted 24 November 2015 hypothesized to reflect preconscious planning and/or preparation of the movement. Using Available online 9 December 2015 a novel experimental design, we teased apart the relative contribution of motor-related and non-motor-related processes to the RP. The results of our experiment reveal that Keywords: robust RPs occured in the absence of movement and that motor-related processes did Readiness potential not significantly modulate the RP. This suggests that the RP measured here is unlikely to Volition Libet reflect preconscious motor planning or preparation of an ensuing movement, and instead Consciousness may reflect decision-related or anticipatory processes that are non-motoric in nature. -
Somatosensory Evoked Potentials in Spinal Cord Injured Patients
Paraplegia 19 (1981) 1I8-I22 0031-1758/81/00°7°118 $02.00 © 198 I International Medical Society of Paraplegia SOMATOSENSORY EVOKED POTENTIALS IN SPINAL CORD INJURED PATIENTS By PAUL E. KAPLAN,! M.D., F.A.C.P. and JOEL S. ROSEN,2 M.D. 1 Associate Professor, Department of Rehabilitation Medicine, Northwestern University; 2 Associate Professor (Clinical), Department of Rehabilitation Medicine, Northwestern University Key words: Somatosensory evoked potentials; Spinal cord injury. Abstract. Out of 25 patients with traumatic spinal cord injuries, ten patients with complete and 15 incomplete (five serially) were evaluated with somatosensory evoked potentials. Clinical correlations are presented and discussed. Introduction IN 1941, Marshall et at. described the cerebral somatosensory projection of primates. Dawson (1950, 1954, 1956) first evoked somatosensory cerebral potentials (SEPs) in man by electrically stimulating the fingers. The evoked potentials had an amplitude of less than 10 microvolts and were isolated at first by superimposition and later by averaging techniques from the contralateral cerebral hemisphere. Since then, SEPs have been isolated after stimulation of the upper extremities (Allison, 1962; Goff et at., 1962; Giblin, 1964; Halliday, 1967) and of the lower extremities (Liberson et at., 1963; Bergamini et at., 1965; Oester et at., 1972; Tsumoto et at., 1972). SEP values include transmission of the evoked potential through the spinal cord (Desmedt, 1971; Desmedt et at., 1973). An involvement of the posterior column of the spinal cord has resulted in prolonged or absent SEP values (Halliday et at., 1963). The lower extremity SEP values reappeared (though delayed) after removal of an extradural benign tumour (Oester et at., 1972). -
Magnetoencephalographic Representation of the Sensorimotor
1649 J Neurol Neurosurg Psychiatry: first published as 10.1136/jnnp.74.12.1649 on 24 November 2003. Downloaded from PAPER Magnetoencephalographic representation of the sensorimotor hand area in cases of intracerebral tumour M Oishi, M Fukuda, S Kameyama, T Kawaguchi, H Masuda, R Tanaka ............................................................................................................................... J Neurol Neurosurg Psychiatry 2003;74:1649–1654 Objective: To assess the clinical value of magnetoencephalography (MEG) in localising the primary hand motor area and evaluating cortical distortion of the sensorimotor cortices in patients with intracerebral tumour. Methods: 10 normal volunteers (controls) and 14 patients with an intracerebral tumour located around the central region were studied. Somatosensory evoked magnetic fields (SEFs) following median nerve stimulation, and movement related cerebral magnetic fields (MRCFs) following index finger extension, were measured in all subjects and analysed by the equivalent current dipole (ECD) method to ascertain the See end of article for authors’ affiliations neuronal sources of the primary sensory and motor components (N20m and MF, respectively). These ECD ....................... locations were defined as the primary hand sensory and motor areas and the positional relations between these two functional areas in controls and patients were investigated. Correspondence to: Dr M Oishi, Department of Results: The standard range of ECD locations of MF to N20m was determined in controls. In 11 of the 14 Neurosurgery, National patients, MRCFs could identify the primary motor hand area. ECD locations of MF were significantly closer Nishi-Niigata Central to the N20m in the medial-lateral direction in patients than in controls. In patients with a tumour located Hospital, 1-14-1 Masago, Niigata 950-2085, Japan; below the sensorimotor hand area, relative ECD locations of MF to N20m moved anteriorly over the [email protected] standard range determined in the control subjects. -
Neural Correlates of Flow Using Auditory Evoked Potential Suppression
Neural correlates of flow using auditory evoked potential suppression Kyongsik Yun1,2,3*, Saeran Doh4*, Elisa Carrus5, Daw-An Wu1,2, Shinsuke Shimojo1,2,6 1Computation and Neural Systems, California Institute of Technology, Pasadena, CA 91125, USA 2Division of Biology, California Institute of Technology, Pasadena, CA 91125, USA 3BBB Technologies Inc., Seoul, South Korea 4Department of Food Business Management, School of Food, Agricultural and Environmental Sciences, Miyagi University, Miyagi, Japan 5Division of Psychology, School of Applied Sciences, London South Bank University, London UK 6Japan Science and Technology Agency, Saitama, Japan *These authors contributed equally to this work. Correspondence should be addressed to K.Y. [email protected] 1 Abstract "Flow" is a hyper-engaged state of consciousness most commonly described in athletics, popularly termed “being in the zone.” Quantitative research into flow has been hampered by the disruptive nature of gathering subjective reports. Here we show that a passive probe (suppression of Auditory Evoked Potential in EEG) that allowed our participants to remain engaged in a first-person shooting game while we continually tracked the depth of their immersion corresponded with the participants’ subjective experiences, and with their objective performance levels. Comparing this time-varying record of flow against the overall EEG record, we identified neural correlates of flow in the anterior cingulate cortex and the temporal pole. These areas displayed increased beta band activity, mutual connectivity, and feedback connectivity with primary motor cortex. These results corroborate the notion that the flow state is an objective and quantifiable state of consciousness, which we identify and characterize across subjective, behavioral and neural measures. -
Auditory P300 and N100 Components As Intermediate Phenotypes for Psychotic Disorder: Familial Liability and Reliability ⇑ Claudia J.P
Clinical Neurophysiology 122 (2011) 1984–1990 Contents lists available at ScienceDirect Clinical Neurophysiology journal homepage: www.elsevier.com/locate/clinph Auditory P300 and N100 components as intermediate phenotypes for psychotic disorder: Familial liability and reliability ⇑ Claudia J.P. Simons a,b, , Anke Sambeth c, Lydia Krabbendam a,e, Stefanie Pfeifer a, Jim van Os a,d, Wim J. Riedel c a Department of Psychiatry and Neuropsychology, Maastricht University, European Graduate School of Neuroscience, SEARCH, P.O. Box 616, 6200 MD Maastricht, The Netherlands b GGzE, Institute of Mental Health Care Eindhoven en de Kempen, P.O. Box 909, 5600 AX Eindhoven, The Netherlands c Department of Neuropsychology and Psychopharmacology, Faculty of Psychology and Neuroscience, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands d Visiting Professor of Psychiatric Epidemiology, King’s College London, King’s Health Partners, Department of Psychosis Studies, Institute of Psychiatry, UK e Centre Brain and Learning, Department of Psychology and Education, VU University Amsterdam, van der Boechorststraat 1, 1081 BT Amsterdam, The Netherlands article info highlights Article history: A reliable N100 latency delay was found in unaffected siblings of patients with a psychotic disorder. Accepted 28 February 2011 P300 amplitude and latency were not found to be affected in siblings. Available online 1 April 2011 Short-term test–retest reliability of N100 and P300 components were sound across patients, siblings and controls, with the main exception of N100 latency in patients. Keywords: Electroencephalography Event-related potentials abstract Psychoses Schizophrenia Objective: Abnormalities of the auditory P300 are a robust finding in patients with psychosis. The pur- Test–retest poses of this study were to determine whether patients with a psychotic disorder and their unaffected Relatives siblings show abnormalities in P300 and N100 and to establish test–retest reliabilities for these ERP com- ponents. -
Analysis of a Choice-Reaction Task Yields a New Interpretation of Libet's Experiments ⁎ Christoph S
Available online at www.sciencedirect.com International Journal of Psychophysiology 67 (2008) 151–157 www.elsevier.com/locate/ijpsycho Fast track report Analysis of a choice-reaction task yields a new interpretation of Libet's experiments ⁎ Christoph S. Herrmann a,b,e, , Michael Pauen b,d,f, Byoung-Kyong Min a, Niko A. Busch a, Jochem W. Rieger c a Otto-von-Guericke-University, Dept. for Biological Psychology, Magdeburg, Germany b Center for Behavioural Brain Sciences, Magdeburg, Germany c Otto-von-Guericke-University, Dept., for Neurology II, Magdeburg, Germany d Humboldt-University, Institute for Philosophy, Berlin, Germany e Max Planck Institute for Human Cognitive and Brain Science, Leipzig, Germany f Berlin School of Mind and Brain, Germany Received 23 March 2007; received in revised form 11 October 2007; accepted 15 October 2007 Available online 22 November 2007 Abstract Benjamin Libet has demonstrated that the readiness potential precedes the time at which participants consciously decide to perform an intentional motor act, and suggested that free will is an illusion. We performed an experiment where participants observed a stimulus on a computer monitor and were instructed to press one of two buttons, depending on the presented stimulus. We found neural activity preceding the motor response, similar to Libet's experiments. However, this activity was already present prior to stimulus presentation, and thus before participants could decide which button to press. Therefore, we argue that this activity does not specifically determine behaviour. Instead, it may reflect a general expectation. This interpretation would not interfere with the notion of free will. © 2007 Elsevier B.V.