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Morrone JM, Pedlar CR. EEG-based neurophysiological indices for expert psychomotor performance - a review. Brain Cogn 2024; 175:106132. [PMID: 38219415 DOI: 10.1016/j.bandc.2024.106132] [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: 09/06/2023] [Revised: 12/19/2023] [Accepted: 01/06/2024] [Indexed: 01/16/2024]
Abstract
A primary objective of current human neuropsychological performance research is to define the physiological correlates of adaptive knowledge utilization, in order to support the enhanced execution of both simple and complex tasks. Within the present article, electroencephalography-based neurophysiological indices characterizing expert psychomotor performance, will be explored. As a means of characterizing fundamental processes underlying efficient psychometric performance, the neural efficiency model will be evaluated in terms of alpha-wave-based selective cortical processes. Cognitive and motor domains will initially be explored independently, which will act to encapsulate the task-related neuronal adaptive requirements for enhanced psychomotor performance associating with the neural efficiency model. Moderating variables impacting the practical application of such neuropsychological model, will also be investigated. As a result, the aim of this review is to provide insight into detectable task-related modulation involved in developed neurocognitive strategies which support heightened psychomotor performance, for the implementation within practical settings requiring a high degree of expert performance (such as sports or military operational settings).
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Affiliation(s)
- Jazmin M Morrone
- Faculty of Sport, Allied Health, and Performance Science, St Mary's University, Twickenham, London, UK.
| | - Charles R Pedlar
- Faculty of Sport, Allied Health, and Performance Science, St Mary's University, Twickenham, London, UK; Institute of Sport, Exercise and Health, Division of Surgery and Interventional Science, University College London, UK
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2
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Sáringer S, Fehér Á, Sáry G, Kaposvári P. Gamma oscillations in visual statistical learning correlate with individual behavioral differences. Front Behav Neurosci 2023; 17:1285773. [PMID: 38025386 PMCID: PMC10663268 DOI: 10.3389/fnbeh.2023.1285773] [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: 08/30/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023] Open
Abstract
Statistical learning is assumed to be a fundamentally general sensory process across modalities, age, other cognitive functions, and even species. Despite this general role, behavioral testing on regularity acquisition shows great variance among individuals. The current study aimed to find neural correlates of visual statistical learning showing a correlation with behavioral results. Based on a pilot study, we conducted an EEG study where participants were exposed to associated stimulus pairs; the acquisition was tested through a familiarity test. We identified an oscillation in the gamma range (40-70 Hz, 0.5-0.75 s post-stimulus), which showed a positive correlation with the behavioral results. This change in activity was located in a left frontoparietal cluster. Based on its latency and location, this difference was identified as a late gamma activity, a correlate of model-based learning. Such learning is a summary of several top-down mechanisms that modulate the recollection of statistical relationships such as the capacity of working memory or attention. These results suggest that, during acquisition, individual behavioral variance is influenced by dominant learning processes which affect the recall of previously gained information.
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Affiliation(s)
| | | | | | - Péter Kaposvári
- Department of Physiology, Albert Szent-Gyögyi Medical School, University of Szeged, Szeged, Hungary
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3
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Parto-Dezfouli M, Vezoli J, Bosman CA, Fries P. Enhanced behavioral performance through interareal gamma and beta synchronization. Cell Rep 2023; 42:113249. [PMID: 37837620 PMCID: PMC10679823 DOI: 10.1016/j.celrep.2023.113249] [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: 03/02/2023] [Revised: 07/18/2023] [Accepted: 09/26/2023] [Indexed: 10/16/2023] Open
Abstract
Cognitive functioning requires coordination between brain areas. Between visual areas, feedforward gamma synchronization improves behavioral performance. Here, we investigate whether similar principles hold across brain regions and frequency bands, using simultaneous electrocorticographic recordings from 15 areas of two macaque monkeys during performance of a selective attention task. Short behavioral reaction times (RTs), suggesting efficient interareal communication, occurred when occipital areas V1, V2, V4, and DP showed gamma synchronization, and fronto-central areas S1, 5, F1, F2, and F4 showed beta synchronization. For both area clusters and corresponding frequency bands, deviations from the typically observed phase relations increased RTs. Across clusters and frequency bands, good phase relations occurred in a correlated manner specifically when they processed the behaviorally relevant stimulus. Furthermore, the fronto-central cluster exerted a beta-band influence onto the occipital cluster whose strength predicted short RTs. These results suggest that local gamma and beta synchronization and their inter-regional coordination jointly improve behavioral performance.
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Affiliation(s)
- Mohsen Parto-Dezfouli
- Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, 60528 Frankfurt, Germany
| | - Julien Vezoli
- Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, 60528 Frankfurt, Germany
| | - Conrado Arturo Bosman
- Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, 6525 EN Nijmegen, the Netherlands; Cognitive and Systems Neuroscience Group, Swammerdam Institute for Life Sciences, University of Amsterdam, 1090 GE Amsterdam, the Netherlands
| | - Pascal Fries
- Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, 60528 Frankfurt, Germany; Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, 6525 EN Nijmegen, the Netherlands.
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4
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Parto-Dezfouli M, Vezoli J, Bosman CA, Fries P. Enhanced Behavioral Performance through Interareal Gamma and Beta Synchronization. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.06.531093. [PMID: 36945499 PMCID: PMC10028832 DOI: 10.1101/2023.03.06.531093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Abstract
Cognitive functioning requires coordination between brain areas. Between visual areas, feedforward gamma synchronization improves behavioral performance. Here, we investigate whether similar principles hold across brain regions and frequency bands, using simultaneous local field potential recordings from 15 areas during performance of a selective attention task. Short behavioral reaction times (RTs), an index of efficient interareal communication, occurred when occipital areas V1, V2, V4, DP showed gamma synchronization, and fronto-central areas S1, 5, F1, F2, F4 showed beta synchronization. For both area clusters and corresponding frequency bands, deviations from the typically observed phase relations increased RTs. Across clusters and frequency bands, good phase relations occurred in a correlated manner specifically when they processed the behaviorally relevant stimulus. Furthermore, the fronto-central cluster exerted a beta-band influence onto the occipital cluster whose strength predicted short RTs. These results suggest that local gamma and beta synchronization and their inter-regional coordination jointly improve behavioral performance.
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Affiliation(s)
- Mohsen Parto-Dezfouli
- Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, 60528 Frankfurt, Germany
| | - Julien Vezoli
- Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, 60528 Frankfurt, Germany
| | - Conrado Arturo Bosman
- Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, 6525 EN Nijmegen, Netherlands
- Swammerdam Institute for Life Sciences, Center for Neuroscience, Faculty of Science, University of Amsterdam, 1098 XH Amsterdam, Netherlands
| | - Pascal Fries
- Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, 60528 Frankfurt, Germany
- Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, 6525 EN Nijmegen, Netherlands
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5
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The perceived duration of expected events depends on how the expectation is formed. Atten Percept Psychophys 2022; 84:1718-1725. [PMID: 35699846 PMCID: PMC9232426 DOI: 10.3758/s13414-022-02519-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/06/2022] [Indexed: 12/03/2022]
Abstract
Repeated events can seem shortened. It has been suggested that this results from an inverse relationship between predictability and perceived duration, with more predictable events seeming shorter. Some evidence disputes this generalisation, as there are cases where this relationship has been nullified, or even reversed. This study sought to combine different factors that encourage expectation into a single paradigm, to directly compare their effects. We find that when people are asked to declare a prediction (i.e., to predict which colour sequence will ensue), guess-confirming events can seem relatively protracted. This augmented a positive time-order error, with the first of two sequential presentations already seeming protracted. We did not observe a contraction of perceived duration for more probable or for repeated events. Overall, our results are inconsistent with a simple mapping between predictability and perceived duration. Whether the perceived duration of an expected event will seem relatively contracted or expanded seems to be contingent on the causal origin of expectation.
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6
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Ongoing neural oscillations influence behavior and sensory representations by suppressing neuronal excitability. Neuroimage 2021; 247:118746. [PMID: 34875382 DOI: 10.1016/j.neuroimage.2021.118746] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 10/21/2021] [Accepted: 11/19/2021] [Indexed: 12/28/2022] Open
Abstract
The ability to process and respond to external input is critical for adaptive behavior. Why, then, do neural and behavioral responses vary across repeated presentations of the same sensory input? Ongoing fluctuations of neuronal excitability are currently hypothesized to underlie the trial-by-trial variability in sensory processing. To test this, we capitalized on intracranial electrophysiology in neurosurgical patients performing an auditory discrimination task with visual cues: specifically, we examined the interaction between prestimulus alpha oscillations, excitability, task performance, and decoded neural stimulus representations. We found that strong prestimulus oscillations in the alpha+ band (i.e., alpha and neighboring frequencies), rather than the aperiodic signal, correlated with a low excitability state, indexed by reduced broadband high-frequency activity. This state was related to slower reaction times and reduced neural stimulus encoding strength. We propose that the alpha+ rhythm modulates excitability, thereby resulting in variability in behavior and sensory representations despite identical input.
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7
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Najberg H, Wachtl L, Anziano M, Mouthon M, Spierer L. Aging Modulates Prefrontal Plasticity Induced by Executive Control Training. Cereb Cortex 2021; 31:809-825. [PMID: 32930336 PMCID: PMC7786350 DOI: 10.1093/cercor/bhaa259] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 07/15/2020] [Accepted: 08/12/2020] [Indexed: 12/18/2022] Open
Abstract
While declines in inhibitory control, the capacity to suppress unwanted neurocognitive processes, represent a hallmark of healthy aging, whether this function is susceptible to training-induced plasticity in older populations remains largely unresolved. We addressed this question with a randomized controlled trial investigating the changes in behavior and electrical neuroimaging activity induced by a 3-week adaptive gamified Go/NoGo inhibitory control training (ICT). Performance improvements were accompanied by the development of more impulsive response strategies, but did not generalize to impulsivity traits nor quality of life. As compared with a 2-back working-memory training, the ICT in the older adults resulted in a purely quantitative reduction in the strength of the activity in a medial and ventrolateral prefrontal network over the 400 ms P3 inhibition-related event-related potentials component. However, as compared with young adults, the ICT induced distinct configurational modifications in older adults' 200 ms N2 conflict monitoring medial-frontal functional network. Hence, while older populations show preserved capacities for training-induced plasticity in executive control, aging interacts with the underlying plastic brain mechanisms. Training improves the efficiency of the inhibition process in older adults, but its effects differ from those in young adults at the level of the coping with inhibition demands.
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Affiliation(s)
- Hugo Najberg
- Neurology Unit, Medicine Section, Faculty of Science and Medicine, University of Fribourg, 1700, Fribourg, Switzerland
| | - Laura Wachtl
- Neurology Unit, Medicine Section, Faculty of Science and Medicine, University of Fribourg, 1700, Fribourg, Switzerland
| | - Marco Anziano
- Neurology Unit, Medicine Section, Faculty of Science and Medicine, University of Fribourg, 1700, Fribourg, Switzerland
| | - Michael Mouthon
- Neurology Unit, Medicine Section, Faculty of Science and Medicine, University of Fribourg, 1700, Fribourg, Switzerland
| | - Lucas Spierer
- Neurology Unit, Medicine Section, Faculty of Science and Medicine, University of Fribourg, 1700, Fribourg, Switzerland
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8
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Altered phase and nonphase EEG activity expose impaired maintenance of a spatial-object attentional focus in multiple sclerosis patients. Sci Rep 2020; 10:20721. [PMID: 33244155 PMCID: PMC7691340 DOI: 10.1038/s41598-020-77690-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 11/04/2020] [Indexed: 11/09/2022] Open
Abstract
Some of the anatomical and functional basis of cognitive impairment in multiple sclerosis (MS) currently remains unknown. In particular, there is scarce knowledge about modulations in induced EEG (nonphase activity) for diverse frequency bands related to attentional deficits in this pathology. The present study analyzes phase and nonphase alpha and gamma modulations in 26 remitting-relapsing multiple sclerosis patients during their participation in the attention network test compared with twenty-six healthy controls (HCs) matched in sociodemographic variables. Behavioral results showed that the MS group exhibited general slowing, suggesting impairment in alerting and orienting networks, as has been previously described in other studies. Time–frequency analysis of EEG revealed that the gamma band was related to the spatial translation of the attentional focus, and the alpha band seemed to be related to the expectancy mechanisms and cognitive processing of the target. Moreover, phase and nonphase modulations differed in their psychophysiological roles and were affected differently in the MS and HC groups. In summary, nonphase modulations can unveil hidden cognitive mechanisms for phase analysis and complete our knowledge of the neural basis of cognitive impairment in multiple sclerosis pathology.
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Fiebelkorn IC, Kastner S. Spike Timing in the Attention Network Predicts Behavioral Outcome Prior to Target Selection. Neuron 2020; 109:177-188.e4. [PMID: 33098762 DOI: 10.1016/j.neuron.2020.09.039] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 07/08/2020] [Accepted: 09/25/2020] [Indexed: 10/23/2022]
Abstract
There has been little evidence linking changes in spiking activity that occur prior to a spatially predictable target (i.e., prior to target selection) to behavioral outcomes, despite such preparatory changes being widely assumed to enhance the sensitivity of sensory processing. We simultaneously recorded from frontal and parietal nodes of the attention network while macaques performed a spatial cueing task. When anticipating a spatially predictable target, different patterns of coupling between spike timing and the oscillatory phase in local field potentials-but not changes in spike rate-were predictive of different behavioral outcomes. These behaviorally relevant differences in local and between-region synchronization occurred among specific cell types that were defined based on their sensory and motor properties, providing insight into the mechanisms underlying enhanced sensory processing prior to target selection. We propose that these changes in neural synchronization reflect differential anticipatory engagement of the network nodes and functional units that shape attention-related sampling.
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Affiliation(s)
- Ian C Fiebelkorn
- Princeton Neuroscience Institute, Princeton University, Princeton, NJ 08544, USA.
| | - Sabine Kastner
- Princeton Neuroscience Institute, Princeton University, Princeton, NJ 08544, USA; Department of Psychology, Princeton University, Princeton, NJ 08544, USA
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10
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Vázquez-Marrufo M, Caballero-Díaz R, Martín-Clemente R, Galvao-Carmona A, González-Rosa JJ. Individual test-retest reliability of evoked and induced alpha activity in human EEG data. PLoS One 2020; 15:e0239612. [PMID: 32966341 PMCID: PMC7511026 DOI: 10.1371/journal.pone.0239612] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 09/10/2020] [Indexed: 01/08/2023] Open
Abstract
Diverse psychological mechanisms have been associated with modulations of different EEG frequencies. To the extent of our knowledge, there are few studies of the test-retest reliability of these modulations in the human brain. To assess evoked and induced alpha reliabilities related to cognitive processing, EEG data from twenty subjects were recorded in 58 derivations in two different sessions separated by 49.5 ± 48.9 (mean ± standard deviation) days. A visual oddball was selected as the cognitive task, and three main parameters were analyzed for evoked and induced alpha modulations (latency, amplitude and topography). Latency and amplitude for evoked and induced modulations showed stable behavior between the two sessions. The correlation between sessions for alpha evoked and induced topographies in the grand average (group level) was r = 0.923, p<0.001; r = 0.962, p<0.001, respectively. The within-subject correlation values for evoked modulation ranged from 0.472 to 0.974 (mean: 0.766), whereas induced activity showed a different range, 0.193 to 0.892 (mean: 0.655). Individual analysis of the test-retest reliability showed a higher heterogeneity in the induced modulation, probably due to the heterogeneous phases found in the second case. However, despite this heterogeneity in phase values for induced activity relative to the onset of the stimuli, an excellent correlation score was obtained for group topography, with values that were better than those of the grand average evoked topography. As a main conclusion, induced alpha activity can be observed as a stable and reproducible response in the cognitive processing of the human brain.
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Affiliation(s)
- Manuel Vázquez-Marrufo
- Experimental Psychology Department, Faculty of Psychology, University of Seville, Sevilla, Spain
| | - Rocío Caballero-Díaz
- Experimental Psychology Department, Faculty of Psychology, University of Seville, Sevilla, Spain
| | - Rubén Martín-Clemente
- Signal Processing and Communications Department, Higher Technical School of Engineering, University of Seville, Sevilla, Spain
| | | | - Javier J González-Rosa
- Department of Psychology, Universidad de Cádiz, Cádiz, Spain.,Institute of Biomedical Research and Innovation of Cádiz (INiBICA), Cádiz, Spain
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11
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Zareian B, Maboudi K, Daliri MR, Abrishami Moghaddam H, Treue S, Esghaei M. Attention strengthens across-trial pre-stimulus phase coherence in visual cortex, enhancing stimulus processing. Sci Rep 2020; 10:4837. [PMID: 32179777 PMCID: PMC7076023 DOI: 10.1038/s41598-020-61359-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 02/21/2020] [Indexed: 12/19/2022] Open
Abstract
Attention selectively routes the most behaviorally relevant information from the stream of sensory inputs through the hierarchy of cortical areas. Previous studies have shown that visual attention depends on the phase of oscillatory brain activities. These studies mainly focused on the stimulus presentation period, rather than the pre-stimulus period. Here, we hypothesize that selective attention controls the phase of oscillatory neural activities to efficiently process relevant information. We document an attentional modulation of pre-stimulus inter-trial phase coherence (a measure of deviation between instantaneous phases of trials) of low frequency local field potentials (LFP) in visual area MT of macaque monkeys. Our data reveal that phase coherence increases following a spatial cue deploying attention towards the receptive field of the recorded neural population. We further show that the attentional enhancement of phase coherence is positively correlated with the modulation of the stimulus-induced firing rate, and importantly, a higher phase coherence is associated with a faster behavioral response. These results suggest a functional utilization of intrinsic neural oscillatory activities for an enhanced processing of upcoming stimuli.
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Affiliation(s)
- Behzad Zareian
- Department of Psychology, University of California Riverside, Riverside, USA
| | - Kourosh Maboudi
- Department of Psychology, University of Wisconsin-Milwaukee, Milwaukee, USA
- School of Cognitive Sciences, Institute for Research in Fundamental Sciences, Tehran, Iran
| | - Mohammad Reza Daliri
- School of Cognitive Sciences, Institute for Research in Fundamental Sciences, Tehran, Iran
- Neuroscience and Neuroengineering Research Laboratory, Biomedical Engineering Department, School of Electrical Engineering, Iran University of Science and Technology, 16846-13114, Tehran, Iran
| | - Hamid Abrishami Moghaddam
- Faculty of Electrical and Computer Engineering, Khajeh Nasir Toosi University of Technology, Tehran, Iran
| | - Stefan Treue
- Cognitive Neuroscience Laboratory, German Primate Center - Leibniz Institute for Primate Research, Goettingen, Germany
- Faculty of Biology and Psychology, University of Goettingen, Goettingen, Germany
- Bernstein Center for Computational Neuroscience, Goettingen, Germany
- Leibniz-ScienceCampus Primate Cognition, Goettingen, Germany
| | - Moein Esghaei
- School of Cognitive Sciences, Institute for Research in Fundamental Sciences, Tehran, Iran.
- Cognitive Neuroscience Laboratory, German Primate Center - Leibniz Institute for Primate Research, Goettingen, Germany.
- Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran.
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12
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Mastakouri AA, Scholkopf B, Grosse-Wentrup M. Beta Power May Meditate the Effect of Gamma-TACS on Motor Performance. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2020; 2019:5902-5908. [PMID: 31947193 DOI: 10.1109/embc.2019.8856416] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Transcranial alternating current stimulation (tACS) is becoming an important method in the field of motor rehabilitation because of its ability to non-invasively influence ongoing brain oscillations at arbitrary frequencies. However, substantial variations in its effect across individuals are reported, making tACS a currently unreliable treatment tool. One reason for this variability is the lack of knowledge about the exact way tACS entrains and interacts with ongoing brain oscillations. The present crossover stimulation study on 20 healthy subjects contributes to the understanding of cross-frequency effects of gamma (70 Hz) tACS over the contralateral motor cortex by providing empirical evidence which is consistent with a role of low- (12 -20 Hz) and high- (20- 30 Hz) beta power as a mediator of gamma-tACS on motor performance.
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13
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De Pretto M, Hartmann L, Garcia-Burgos D, Sallard E, Spierer L. Stimulus Reward Value Interacts with Training-induced Plasticity in Inhibitory Control. Neuroscience 2019; 421:82-94. [DOI: 10.1016/j.neuroscience.2019.10.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Revised: 10/03/2019] [Accepted: 10/07/2019] [Indexed: 12/26/2022]
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14
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Parciauskaite V, Voicikas A, Jurkuvenas V, Tarailis P, Kraulaidis M, Pipinis E, Griskova-Bulanova I. 40-Hz auditory steady-state responses and the complex information processing: An exploratory study in healthy young males. PLoS One 2019; 14:e0223127. [PMID: 31589626 PMCID: PMC6779233 DOI: 10.1371/journal.pone.0223127] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 09/13/2019] [Indexed: 12/31/2022] Open
Abstract
Electroencephalographic (EEG) activity in the gamma (30–80 Hz) range is related to a variety of sensory and cognitive processes which are frequently impaired in schizophrenia. Auditory steady-state response at 40-Hz (40-Hz ASSR) is utilized as an index of gamma activity and is proposed as a biomarker of schizophrenia. Nevertheless, the link between ASSRs and cognitive functions is not clear. This study explores a possible relationship between the performance on cognitive tasks and the 40-Hz ASSRs in a controlled uniform sample of young healthy males, as age and sex may have complex influence on ASSRs. Twenty-eight young healthy male volunteers participated (mean age ± SD 25.8±3.3) in the study. The 40-Hz click trains (500 ms) were presented 150 times with an inter-stimulus interval set at 700–1000 ms. The phase-locking index (PLI) and event-related power perturbation (ERSP) of the ASSR were calculated in the 200–500 ms latency range, which corresponds to the steady part of the response. The Psychology Experiment Building Language (PEBL) task battery was used to assess five cognitive subdomains: the Choice response time task, the Stroop test, the Tower of London test, the Lexical decision task and the Semantic categorisation task. Pearson‘s correlation coefficients were calculated to access the relationships; no multiple-test correction was applied as the tests were explorative in nature. A significant positive correlation was observed for the late-latency gamma and the mean number of steps in the Tower of London task reflecting planning and problem-solving abilities. These findings support the concept that 40-Hz ASSR might highlight top-down mechanisms which are related to cognitive functioning. Therefore, 40-Hz ASSRs can be used to explore the relationship between cognitive functioning and neurophysiological indices of brain activity.
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Affiliation(s)
| | | | | | - Povilas Tarailis
- Vilnius University, Institute of Biosciences, Vilnius, Lithuania
| | | | - Evaldas Pipinis
- Vilnius University, Institute of Biosciences, Vilnius, Lithuania
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15
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Mock VL, Luke KL, Hembrook-Short JR, Briggs F. Phase shifts in high-beta- and low-gamma-band local field potentials predict the focus of visual spatial attention. J Neurophysiol 2019; 121:799-822. [PMID: 30540498 DOI: 10.1152/jn.00469.2018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The local field potential (LFP) contains rich information about activity in local neuronal populations. However, it has been challenging to establish direct links between LFP modulations and task-relevant behavior or cognitive processes, such as attention. We sought to determine whether LFP amplitude or phase modulations are predictive of the allocation of visual spatial attention. LFPs were recorded simultaneously in multiple early visual brain structures of alert macaque monkeys performing attention-demanding detection and discrimination tasks. Attention directed toward the receptive field of recorded neurons generated systematically larger phase shifts in high-beta- and low-gamma-frequency LFPs compared with LFP phase shifts on trials in which attention was directed away from the receptive field. This attention-mediated temporal advance corresponded to ~10 ms. LFP phase shifts also correlated with reaction times when monkeys were engaged in the tasks. Importantly, attentional modulation of LFP phase was consistent across monkeys, tasks, visual brain structures, and cortical layers. In contrast, attentional modulation of LFP amplitude varied across frequency bands, visual structures/layers, and tasks. Because LFP phase shifts were robust, consistent, and predictive of spatial attention, they could serve as a reliable marker for attention signals in the brain. NEW & NOTEWORTHY Local field potentials (LFPs) reflect the activity of spatially localized populations of neurons. Whether alterations in LFP activity are indicative of cognitive processes, such as attention, is unclear. We found that shifts in the phase of LFPs measured in multiple visual brain areas reliably predicted the focus of spatial attention. LFP phase shifts could therefore serve as a marker for behaviorally relevant attention signals in the brain.
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Affiliation(s)
- Vanessa L Mock
- Ernest J. Del Monte Institute for Neuroscience, University of Rochester School of Medicine , Rochester, New York.,Program in Experimental and Molecular Medicine, Dartmouth College , Hanover, New Hampshire
| | - Kimberly L Luke
- Department of Physiology and Neurobiology, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire
| | | | - Farran Briggs
- Ernest J. Del Monte Institute for Neuroscience, University of Rochester School of Medicine , Rochester, New York.,Department of Neuroscience, University of Rochester School of Medicine , Rochester, New York.,Department of Brain and Cognitive Sciences, University of Rochester , Rochester, New York.,Center for Visual Science, University of Rochester , Rochester, New York
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16
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Hartmann L, Wachtl L, de Lucia M, Spierer L. Practice-induced functional plasticity in inhibitory control interacts with aging. Brain Cogn 2019; 132:22-32. [PMID: 30802731 DOI: 10.1016/j.bandc.2019.02.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 02/18/2019] [Accepted: 02/18/2019] [Indexed: 12/25/2022]
Abstract
Inhibitory control deficits represent a key aspect of the cognitive declines associated with aging. Practicing inhibitory control has thus been advanced as a potential approach to compensate for age-induced neurocognitive impairments. Yet, the functional brain changes associated with practicing inhibitory control tasks in older adults and whether they differ from those observed in young populations remains unresolved. We compared electrical neuroimaging analyses of ERPs recorded during a Go/NoGo practice session with a Group (Young; Older adults) by Session (Beginning; End of the practice) design to identify whether the practice of an inhibition task in older adults reinforces already implemented compensatory activity or reduce it by enhancing the functioning of the brain networks primarily involved in the tasks. We observed an equivalent small effect of practice on performance in the two age-groups. The topographic ERP analyses and source estimations revealed qualitatively different effects of the practice over the N2 and P3 ERP components, respectively driven by a decrease in supplementary motor area activity and an increase in left ventrolateral prefrontal activity in the older but not in the young adults with practice. Our results thus indicate that inhibition task practice in older adults increases age-related divergences in the underlying functional processes.
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Affiliation(s)
- Lea Hartmann
- Neurology Unit, Medicine Section, Faculty of Sciences and Medicine, University of Fribourg, Fribourg, Switzerland
| | - Laura Wachtl
- Neurology Unit, Medicine Section, Faculty of Sciences and Medicine, University of Fribourg, Fribourg, Switzerland
| | - Marzia de Lucia
- Laboratoire de Recherche en Neuroimagerie (LREN), Department of Clinical Neurosciences, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Lucas Spierer
- Neurology Unit, Medicine Section, Faculty of Sciences and Medicine, University of Fribourg, Fribourg, Switzerland.
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Schjetnan AGP, Gidyk DC, Metz GA, Luczak A. Anodal transcranial direct current stimulation with monopolar pulses improves limb use after stroke by enhancing inter-hemispheric coherence. Acta Neurobiol Exp (Wars) 2019. [DOI: 10.21307/ane-2019-027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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Sallard E, Hartmann L, Ptak R, Spierer L. Spatiotemporal brain dynamics underlying attentional bias modifications. Int J Psychophysiol 2018; 130:29-39. [DOI: 10.1016/j.ijpsycho.2018.06.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 04/25/2018] [Accepted: 06/04/2018] [Indexed: 11/28/2022]
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19
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Brain mechanisms for perceiving illusory lines in humans. Neuroimage 2018; 181:182-189. [PMID: 30008430 DOI: 10.1016/j.neuroimage.2018.07.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 06/29/2018] [Accepted: 07/06/2018] [Indexed: 11/23/2022] Open
Abstract
Illusory contours (ICs) are perceptions of visual borders despite absent contrast gradients. The psychophysical and neurobiological mechanisms of IC processes have been studied across species and diverse brain imaging/mapping techniques. Nonetheless, debate continues regarding whether IC sensitivity results from a (presumably) feedforward process within low-level visual cortices (V1/V2) or instead are processed first within higher-order brain regions, such as lateral occipital cortices (LOC). Studies in animal models, which generally favour a feedforward mechanism within V1/V2, have typically involved stimuli inducing IC lines. By contrast, studies in humans generally favour a mechanism where IC sensitivity is mediated by LOC and have typically involved stimuli inducing IC forms or shapes. Thus, the particular stimulus features used may strongly contribute to the model of IC sensitivity supported. To address this, we recorded visual evoked potentials (VEPs) while presenting human observers with an array of 10 inducers within the central 5°, two of which could be oriented to induce an IC line on a given trial. VEPs were analysed using an electrical neuroimaging framework. Sensitivity to the presence vs. absence of centrally-presented IC lines was first apparent at ∼200 ms post-stimulus onset and was evident as topographic differences across conditions. We also localized these differences to the LOC. The timing and localization of these effects are consistent with a model of IC sensitivity commencing within higher-level visual cortices. We propose that prior observations of effects within lower-tier cortices (V1/V2) are the result of feedback from IC sensitivity that originates instead within higher-tier cortices (LOC).
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20
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Popov T, Jensen O, Schoffelen JM. Dorsal and ventral cortices are coupled by cross-frequency interactions during working memory. Neuroimage 2018; 178:277-286. [PMID: 29803957 DOI: 10.1016/j.neuroimage.2018.05.054] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 04/04/2018] [Accepted: 05/23/2018] [Indexed: 01/15/2023] Open
Abstract
Oscillatory activity in the alpha and gamma bands is considered key in shaping functional brain architecture. Power increases in the high-frequency gamma band are typically reported in parallel to decreases in the low-frequency alpha band. However, their functional significance and in particular their interactions are not well understood. The present study shows that, in the context of an N-back working memory task, alpha power decreases in the dorsal visual stream are related to gamma power increases in early visual areas. Granger causality analysis revealed directed interregional interactions from dorsal to ventral stream areas, in accordance with task demands. Present results reveal a robust, behaviorally relevant, and architectonically decisive power-to-power relationship between alpha and gamma activity. This relationship suggests that anatomically distant power fluctuations in oscillatory activity can link cerebral network dynamics on trial-by-trial basis during cognitive operations such as working memory.
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Affiliation(s)
- Tzvetan Popov
- Department of Psychology, Universtität Konstanz, Germany
| | - Ole Jensen
- Radboud University Nijmegen, Donders Institute for Brain, Cognition and Behaviour, Center for Cognitive Neuroimaging, The Netherlands; School of Psychology, University of Birmingham, Hills Building, Birmingham, B15 2TT, UK
| | - Jan-Mathijs Schoffelen
- Radboud University Nijmegen, Donders Institute for Brain, Cognition and Behaviour, Center for Cognitive Neuroimaging, The Netherlands.
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21
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Spatiotemporal brain dynamics supporting the immediate automatization of inhibitory control by implementation intentions. Sci Rep 2017; 7:10821. [PMID: 28883497 PMCID: PMC5589860 DOI: 10.1038/s41598-017-10832-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 08/16/2017] [Indexed: 01/29/2023] Open
Abstract
While cognitive interventions aiming at reinforcing intentional executive control of unwanted response showed only modest effects on impulse control disorders, the establishment of fast automatic, stimulus-driven inhibition of responses to specific events with implementation intention self-regulation strategies has proven to be an effective remediation approach. However, the neurocognitive mechanisms underlying implementation intentions remain largely unresolved. We addressed this question by comparing electrical neuroimaging analyses of event-related potentials recorded during a Go/NoGo task between groups of healthy participants receiving either standard or implementation intentions instructions on the inhibition stimuli. Inhibition performance improvements with implementation intentions were associated with a Group by Stimulus interaction 200–250 ms post-stimulus onset driven by a selective decrease in response to the inhibition stimuli within the left superior temporal gyrus, the right precuneus and the right temporo-parietal junction. We further observed that the implementation intentions group showed already at the beginning of the task the pattern of task-related functional activity reached after practice in the group having received standard instructions. We interpret our results in terms of an immediate establishment of an automatic, bottom-up form of inhibitory control by implementation intentions, supported by stimulus-driven retrieval of verbally encoded stimulus-response mapping rules, which in turn triggered inhibitory processes.
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22
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Santarnecchi E, Biasella A, Tatti E, Rossi A, Prattichizzo D, Rossi S. High-gamma oscillations in the motor cortex during visuo-motor coordination: A tACS interferential study. Brain Res Bull 2017; 131:47-54. [DOI: 10.1016/j.brainresbull.2017.03.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 12/03/2016] [Accepted: 03/15/2017] [Indexed: 10/19/2022]
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23
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Muthukrishnan SP, Ahuja N, Mehta N, Sharma R. Functional brain microstate predicts the outcome in a visuospatial working memory task. Behav Brain Res 2016; 314:134-42. [DOI: 10.1016/j.bbr.2016.08.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 08/04/2016] [Accepted: 08/07/2016] [Indexed: 11/26/2022]
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24
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Meinel A, Castaño-Candamil S, Reis J, Tangermann M. Pre-Trial EEG-Based Single-Trial Motor Performance Prediction to Enhance Neuroergonomics for a Hand Force Task. Front Hum Neurosci 2016; 10:170. [PMID: 27199701 PMCID: PMC4843706 DOI: 10.3389/fnhum.2016.00170] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 04/04/2016] [Indexed: 12/13/2022] Open
Abstract
We propose a framework for building electrophysiological predictors of single-trial motor performance variations, exemplified for SVIPT, a sequential isometric force control task suitable for hand motor rehabilitation after stroke. Electroencephalogram (EEG) data of 20 subjects with mean age of 53 years was recorded prior to and during 400 trials of SVIPT. They were executed within a single session with the non-dominant left hand, while receiving continuous visual feedback of the produced force trajectories. The behavioral data showed strong trial-by-trial performance variations for five clinically relevant metrics, which accounted for reaction time as well as for the smoothness and precision of the produced force trajectory. 18 out of 20 tested subjects remained after preprocessing and entered offline analysis. Source Power Comodulation (SPoC) was applied on EEG data of a short time interval prior to the start of each SVIPT trial. For 11 subjects, SPoC revealed robust oscillatory EEG subspace components, whose bandpower activity are predictive for the performance of the upcoming trial. Since SPoC may overfit to non-informative subspaces, we propose to apply three selection criteria accounting for the meaningfulness of the features. Across all subjects, the obtained components were spread along the frequency spectrum and showed a variety of spatial activity patterns. Those containing the highest level of predictive information resided in and close to the alpha band. Their spatial patterns resemble topologies reported for visual attention processes as well as those of imagined or executed hand motor tasks. In summary, we identified subject-specific single predictors that explain up to 36% of the performance fluctuations and may serve for enhancing neuroergonomics of motor rehabilitation scenarios.
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Affiliation(s)
- Andreas Meinel
- Brain State Decoding Lab, Cluster of Excellence BrainLinks-BrainTools, Department of Computer Science, Albert-Ludwigs-University Freiburg, Germany
| | - Sebastián Castaño-Candamil
- Brain State Decoding Lab, Cluster of Excellence BrainLinks-BrainTools, Department of Computer Science, Albert-Ludwigs-University Freiburg, Germany
| | - Janine Reis
- Department of Neurology, Albert-Ludwigs-University Freiburg, Germany
| | - Michael Tangermann
- Brain State Decoding Lab, Cluster of Excellence BrainLinks-BrainTools, Department of Computer Science, Albert-Ludwigs-University Freiburg, Germany
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25
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Anken J, Knebel JF, Crottaz-Herbette S, Matusz PJ, Lefebvre J, Murray MM. Cue-dependent circuits for illusory contours in humans. Neuroimage 2016; 129:335-344. [DOI: 10.1016/j.neuroimage.2016.01.052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 12/22/2015] [Accepted: 01/22/2016] [Indexed: 10/22/2022] Open
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26
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Bielser ML, Crézé C, Murray MM, Toepel U. Does my brain want what my eyes like? - How food liking and choice influence spatio-temporal brain dynamics of food viewing. Brain Cogn 2015; 110:64-73. [PMID: 26578256 DOI: 10.1016/j.bandc.2015.10.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 10/19/2015] [Accepted: 10/20/2015] [Indexed: 11/28/2022]
Abstract
How food valuation and decision-making influence the perception of food is of major interest to better understand food intake behavior and, by extension, body weight management. Our study investigated behavioral responses and spatio-temporal brain dynamics by means of visual evoked potentials (VEPs) in twenty-two normal-weight participants when viewing pairs of food photographs. Participants rated how much they liked each food item (valuation) and subsequently chose between the two alternative food images. Unsurprisingly, strongly liked foods were also chosen most often. Foods were rated faster as strongly liked than as mildly liked or disliked irrespective of whether they were subsequently chosen over an alternative. Moreover, strongly liked foods were subsequently also chosen faster than the less liked alternatives. Response times during valuation and choice were positively correlated, but only when foods were liked; the faster participants rated foods as strongly liked, the faster they were in choosing the food item over an alternative. VEP modulations by the level of liking attributed as well as the subsequent choice were found as early as 135-180ms after food image onset. Analyses of neural source activity patterns over this time interval revealed an interaction between liking and the subsequent choice within the insula, dorsal frontal and superior parietal regions. The neural responses to food viewing were found to be modulated by the attributed level of liking only when foods were chosen, not when they were dismissed for an alternative. Therein, the responses to disliked foods were generally greater than those to foods that were liked more. Moreover, the responses to disliked but chosen foods were greater than responses to disliked foods which were subsequently dismissed for an alternative offer. Our findings show that the spatio-temporal brain dynamics to food viewing are immediately influenced both by how much foods are liked and by choices taken on them. These valuation and choice processes are subserved by brain regions involved in salience and reward attribution as well as in decision-making processes, which are likely to influence prospective dietary choices in everyday life.
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Affiliation(s)
- Marie-Laure Bielser
- The Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology and Department of Clinical Neurosciences, Vaudois University Hospital Center and University of Lausanne, Lausanne, Switzerland
| | - Camille Crézé
- Department of Physiology, University of Lausanne, Lausanne, Switzerland
| | - Micah M Murray
- The Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology and Department of Clinical Neurosciences, Vaudois University Hospital Center and University of Lausanne, Lausanne, Switzerland; Electroencephalography Brain Mapping Core, Center for Biomedical Imaging (CIBM) of Lausanne and Geneva, Switzerland; Department of Hearing and Speech Sciences, Vanderbilt University, Nashville, TN 37232, USA
| | - Ulrike Toepel
- The Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology and Department of Clinical Neurosciences, Vaudois University Hospital Center and University of Lausanne, Lausanne, Switzerland.
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27
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Rothe T, Deliano M, Wójtowicz AM, Dvorzhak A, Harnack D, Paul S, Vagner T, Melnick I, Stark H, Grantyn R. Pathological gamma oscillations, impaired dopamine release, synapse loss and reduced dynamic range of unitary glutamatergic synaptic transmission in the striatum of hypokinetic Q175 Huntington mice. Neuroscience 2015; 311:519-38. [PMID: 26546830 DOI: 10.1016/j.neuroscience.2015.10.039] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 10/20/2015] [Accepted: 10/21/2015] [Indexed: 11/28/2022]
Abstract
Huntington's disease (HD) is a severe genetically inherited neurodegenerative disorder. Patients present with three principal phenotypes of motor symptoms: choreatic, hypokinetic-rigid and mixed. The Q175 mouse model of disease offers an opportunity to investigate the cellular basis of the hypokinetic-rigid form of HD. At the age of 1 year homozygote Q175 mice exhibited the following signs of hypokinesia: Reduced frequency of spontaneous movements on a precision balance at daytime (-55%), increased total time spent without movement in an open field (+42%), failures in the execution of unconditioned avoidance reactions (+32%), reduced ability for conditioned avoidance (-96%) and increased reaction times (+65%) in a shuttle box. Local field potential recordings revealed low-frequency gamma oscillations in the striatum as a characteristic feature of HD mice at rest. There was no significant loss of DARPP-32 immunolabeled striatal projection neurons (SPNs) although the level of DARPP-32 immunoreactivity was lower in HD. As a potential cause of hypokinesia, HD mice revealed a strong reduction in striatal KCl-induced dopamine release, accompanied by a decrease in the number of tyrosine hydroxylase-(TH)- and VMAT2-positive synaptic varicosities. The presynaptic TH fluorescence level was also reduced. Patch-clamp experiments were performed in slices from 1-year-old mice to record unitary EPSCs (uEPSCs) of presumed cortical origin in the absence of G-protein-mediated modulation. In HD mice, the maximal amplitudes of uEPSCs amounted to 69% of the WT level which matches the loss of VGluT1+/SYP+ synaptic terminals in immunostained sections. These results identify impairment of cortico-striatal synaptic transmission and dopamine release as a potential basis of hypokinesia in HD.
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Affiliation(s)
- T Rothe
- Leibniz Institute for Neurobiology Magdeburg, Germany
| | - M Deliano
- Leibniz Institute for Neurobiology Magdeburg, Germany
| | | | - A Dvorzhak
- Cluster of Excellence NeuroCure, Berlin, Germany
| | - D Harnack
- Department of Experimental Neurology, University Medicine Charité, Berlin, Germany
| | - S Paul
- Cluster of Excellence NeuroCure, Berlin, Germany
| | - T Vagner
- Cluster of Excellence NeuroCure, Berlin, Germany
| | - I Melnick
- Cluster of Excellence NeuroCure, Berlin, Germany; Bogomoletz Institute of Physiology, Kiev, Ukraine
| | - H Stark
- Leibniz Institute for Neurobiology Magdeburg, Germany
| | - R Grantyn
- Cluster of Excellence NeuroCure, Berlin, Germany; Department of Experimental Neurology, University Medicine Charité, Berlin, Germany.
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28
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From bird to sparrow: Learning-induced modulations in fine-grained semantic discrimination. Neuroimage 2015; 118:163-73. [DOI: 10.1016/j.neuroimage.2015.05.091] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 05/02/2015] [Accepted: 05/25/2015] [Indexed: 11/23/2022] Open
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29
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Klein C, Diaz Hernandez L, Koenig T, Kottlow M, Elmer S, Jäncke L. The Influence of Pre-stimulus EEG Activity on Reaction Time During a Verbal Sternberg Task is Related to Musical Expertise. Brain Topogr 2015; 29:67-81. [PMID: 25929715 DOI: 10.1007/s10548-015-0433-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 04/11/2015] [Indexed: 11/25/2022]
Abstract
Previous work highlighted the possibility that musical training has an influence on cognitive functioning. The suggested reason for this influence is the strong recruitment of attention, planning, and working memory functions during playing a musical instrument. The purpose of the present work was twofold, namely to evaluate the general relationship between pre-stimulus electrophysiological activity and cognition, and more specifically the influence of musical expertise on working memory functions. With this purpose in mind, we used covariance mapping analyses to evaluate whether pre-stimulus electroencephalographic activity is predictive for reaction time during a visual working memory task (Sternberg paradigm) in musicians and non-musicians. In line with our hypothesis, we replicated previous findings pointing to a general predictive value of pre-stimulus activity for working memory performance. Most importantly, we also provide first evidence for an influence of musical expertise on working memory performance that could distinctively be predicted by pre-stimulus spectral power. Our results open novel perspectives for better comprehending the vast influences of musical expertise on cognition.
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Affiliation(s)
- Carina Klein
- Division Neuropsychology, Institute of Psychology, University of Zurich, Zurich, Switzerland.
| | - Laura Diaz Hernandez
- Translational Research Center, University Hospital of Psychiatry, Bern, Switzerland. .,Center of Cognition, Learning and Memory, University of Bern, Bern, Switzerland.
| | - Thomas Koenig
- Translational Research Center, University Hospital of Psychiatry, Bern, Switzerland. .,Center of Cognition, Learning and Memory, University of Bern, Bern, Switzerland.
| | - Mara Kottlow
- Translational Research Center, University Hospital of Psychiatry, Bern, Switzerland. .,Center of Cognition, Learning and Memory, University of Bern, Bern, Switzerland. .,Institute of Pharmacology and Toxicology, University of Zurich, Zurich, Switzerland.
| | - Stefan Elmer
- Division Neuropsychology, Institute of Psychology, University of Zurich, Zurich, Switzerland.
| | - Lutz Jäncke
- Division Neuropsychology, Institute of Psychology, University of Zurich, Zurich, Switzerland. .,International Normal Aging and Plasticity Imaging Center (INAPIC), University of Zurich, Zurich, Switzerland. .,Center for Integrative Human Physiology (ZIHP), University of Zurich, Zurich, Switzerland. .,University Research Priority Program (URPP), Dynamic of Healthy Aging, University of Zurich, Zurich, Switzerland. .,Department of Special Education, King Abdulaziz University, Jeddah, Saudi Arabia.
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30
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Toepel U, Bielser ML, Forde C, Martin N, Voirin A, le Coutre J, Murray MM, Hudry J. Brain dynamics of meal size selection in humans. Neuroimage 2015; 113:133-42. [PMID: 25812716 DOI: 10.1016/j.neuroimage.2015.03.041] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 02/18/2015] [Accepted: 03/16/2015] [Indexed: 01/09/2023] Open
Abstract
Although neuroimaging research has evidenced specific responses to visual food stimuli based on their nutritional quality (e.g., energy density, fat content), brain processes underlying portion size selection remain largely unexplored. We identified spatio-temporal brain dynamics in response to meal images varying in portion size during a task of ideal portion selection for prospective lunch intake and expected satiety. Brain responses to meal portions judged by the participants as 'too small', 'ideal' and 'too big' were measured by means of electro-encephalographic (EEG) recordings in 21 normal-weight women. During an early stage of meal viewing (105-145 ms), data showed an incremental increase of the head-surface global electric field strength (quantified via global field power; GFP) as portion judgments ranged from 'too small' to 'too big'. Estimations of neural source activity revealed that brain regions underlying this effect were located in the insula, middle frontal gyrus and middle temporal gyrus, and are similar to those reported in previous studies investigating responses to changes in food nutritional content. In contrast, during a later stage (230-270 ms), GFP was maximal for the 'ideal' relative to the 'non-ideal' portion sizes. Greater neural source activity to 'ideal' vs. 'non-ideal' portion sizes was observed in the inferior parietal lobule, superior temporal gyrus and mid-posterior cingulate gyrus. Collectively, our results provide evidence that several brain regions involved in attention and adaptive behavior track 'ideal' meal portion sizes as early as 230 ms during visual encounter. That is, responses do not show an increase paralleling the amount of food viewed (and, in extension, the amount of reward), but are shaped by regulatory mechanisms.
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Affiliation(s)
- Ulrike Toepel
- The Laboratory for Investigative Neurophysiology (The LINE), The Department of Radiology and Department of Clinical Neurosciences, Vaudois University Hospital Center, University of Lausanne, 1011 Lausanne, Switzerland
| | - Marie-Laure Bielser
- The Laboratory for Investigative Neurophysiology (The LINE), The Department of Radiology and Department of Clinical Neurosciences, Vaudois University Hospital Center, University of Lausanne, 1011 Lausanne, Switzerland
| | - Ciaran Forde
- Nestlé Research Center, Vers-chez-les-Blanc, 1000 Lausanne 26, Switzerland
| | - Nathalie Martin
- Nestlé Research Center, Vers-chez-les-Blanc, 1000 Lausanne 26, Switzerland
| | - Alexandre Voirin
- Nestlé Research Center, Vers-chez-les-Blanc, 1000 Lausanne 26, Switzerland
| | - Johannes le Coutre
- Nestlé Research Center, Vers-chez-les-Blanc, 1000 Lausanne 26, Switzerland; The University of Tokyo, Organization for Interdisciplinary Research Projects, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Micah M Murray
- The Laboratory for Investigative Neurophysiology (The LINE), The Department of Radiology and Department of Clinical Neurosciences, Vaudois University Hospital Center, University of Lausanne, 1011 Lausanne, Switzerland; Electroencephalography Brain Mapping Core, Center for Biomedical Imaging (CIBM) of Lausanne and Geneva, Switzerland; Department of Hearing and Speech Sciences, Vanderbilt University, Nashville, TN 37232, USA
| | - Julie Hudry
- Nestlé Research Center, Vers-chez-les-Blanc, 1000 Lausanne 26, Switzerland.
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31
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Gregoriou GG, Paneri S, Sapountzis P. Oscillatory synchrony as a mechanism of attentional processing. Brain Res 2015; 1626:165-82. [PMID: 25712615 DOI: 10.1016/j.brainres.2015.02.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2014] [Revised: 01/24/2015] [Accepted: 02/01/2015] [Indexed: 01/11/2023]
Abstract
The question of how the brain selects which stimuli in our visual field will be given priority to enter into perception, to guide our actions and to form our memories has been a matter of intense research in studies of visual attention. Work in humans and animal models has revealed an extended network of areas involved in the control and maintenance of attention. For many years, imaging studies in humans constituted the main source of a systems level approach, while electrophysiological recordings in non-human primates provided insight into the cellular mechanisms of visual attention. Recent technological advances and the development of sophisticated analytical tools have allowed us to bridge the gap between the two approaches and assess how neuronal ensembles across a distributed network of areas interact in visual attention tasks. A growing body of evidence suggests that oscillatory synchrony plays a crucial role in the selective communication of neuronal populations that encode the attended stimuli. Here, we discuss data from theoretical and electrophysiological studies, with more emphasis on findings from humans and non-human primates that point to the relevance of oscillatory activity and synchrony for attentional processing and behavior. These findings suggest that oscillatory synchrony in specific frequencies reflects the biophysical properties of specific cell types and local circuits and allows the brain to dynamically switch between different spatio-temporal patterns of activity to achieve flexible integration and selective routing of information along selected neuronal populations according to behavioral demands. This article is part of a Special Issue entitled SI: Prediction and Attention.
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Affiliation(s)
- Georgia G Gregoriou
- University of Crete, Faculty of Medicine, 71003 Heraklion, Crete, Greece; Foundation for Research and Technology Hellas, Institute of Applied and Computational Mathematics, 70013 Heraklion, Crete, Greece.
| | - Sofia Paneri
- University of Crete, Faculty of Medicine, 71003 Heraklion, Crete, Greece; Foundation for Research and Technology Hellas, Institute of Applied and Computational Mathematics, 70013 Heraklion, Crete, Greece.
| | - Panagiotis Sapountzis
- Foundation for Research and Technology Hellas, Institute of Applied and Computational Mathematics, 70013 Heraklion, Crete, Greece.
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32
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Bompas A, Sumner P, Muthumumaraswamy SD, Singh KD, Gilchrist ID. The contribution of pre-stimulus neural oscillatory activity to spontaneous response time variability. Neuroimage 2015; 107:34-45. [PMID: 25482267 PMCID: PMC4306532 DOI: 10.1016/j.neuroimage.2014.11.057] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Revised: 11/14/2014] [Accepted: 11/30/2014] [Indexed: 11/17/2022] Open
Abstract
Large variability between individual response times, even in identical conditions, is a ubiquitous property of animal behavior. However, the origins of this stochasticity and its relation to action decisions remain unclear. Here we focus on the state of the perception-action network in the pre-stimulus period and its influence on subsequent saccadic response time and choice in humans. We employ magnetoencephalography (MEG) and a correlational source reconstruction approach to identify the brain areas where pre-stimulus oscillatory activity predicted saccadic response time to visual targets. We find a relationship between future response time and pre-stimulus power, but not phase, in occipital (including V1), parietal, posterior cingulate and superior frontal cortices, consistently across alpha, beta and low gamma frequencies, each accounting for between 1 and 4% of the RT variance. Importantly, these correlations were not explained by deterministic sources of variance, such as experimental factors and trial history. Our results further suggest that occipital areas mainly reflect short-term (trial to trial) stochastic fluctuations, while the frontal contribution largely reflects longer-term effects such as fatigue or practice. Parietal areas reflect fluctuations at both time scales. We found no evidence of lateralization: these effects were indistinguishable in both hemispheres and for both saccade directions, and non-predictive of choice - a finding with fundamental consequences for models of action decision, where independent, not coupled, noise is normally assumed.
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Affiliation(s)
- Aline Bompas
- Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Tower Building, Park Place, Cardiff CF10 3AT, UK; INSERM, U1028, CNRS, UMR5292, Lyon Neuroscience Research Center, Brain Dynamics and Cognition Team, Hopital du Vinatier, 95 Boulevard Pinel, Bron, 69500, France.
| | - Petroc Sumner
- Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Tower Building, Park Place, Cardiff CF10 3AT, UK
| | - Suresh D Muthumumaraswamy
- Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Tower Building, Park Place, Cardiff CF10 3AT, UK; School of Pharmacy and Psychology, Auckland University, Private Bag 92019, Auckland, New Zealand
| | - Krish D Singh
- Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Tower Building, Park Place, Cardiff CF10 3AT, UK
| | - Iain D Gilchrist
- School of Experimental Psychology, University of Bristol, 12A Priory Road, Bristol BS7 8SW, UK
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33
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Vecchio F, Lacidogna G, Miraglia F, Bramanti P, Ferreri F, Rossini PM. Prestimulus Interhemispheric Coupling of Brain Rhythms Predicts Cognitive–Motor Performance in Healthy Humans. J Cogn Neurosci 2014; 26:1883-90. [DOI: 10.1162/jocn_a_00615] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Abstract
Physiological and neuroimaging studies suggest that human actions are characterized by time-varying engagement of functional distributed networks within the brain. In this study, we investigated whether specific prestimulus interhemispheric connectivity, as a measure of synchronized network between the two hemispheres, could lead to a better performance (as revealed by RT) in a simple visuomotor task. Eighteen healthy adults underwent EEG recording during a visual go/no-go task. In the go/no-go task, a central fixation stimulus was followed by a green (50% of probability) or red visual stimulus. Participants had to press the mouse button after the green stimuli (go trials). Interhemispheric coupling was evaluated by the spectral coherence among all the electrodes covering one hemisphere and matched with those on the other. The frequency bands of interest were delta (2–4 Hz), theta (4–8 Hz), alpha 1 (8–10.5 Hz), alpha 2 (10.5–13 Hz), beta 1 (13–20 Hz), beta 2 (20–30 Hz), and gamma (30–40 Hz). The task-related results showed that interhemispheric connectivity decreased in delta and increased in alpha band. Furthermore, we observed positive delta and negative alpha correlations with the RT; namely, the faster the RT, the lower delta and the higher alpha connection between the two hemispheres. These results suggested that the best performance is anticipated by the better functional coupling of cortical circuits involved during the processing of the sensorimotor information, occurring between the two hemispheres pending cognitive go/no-go task.
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Affiliation(s)
| | | | | | | | - Florinda Ferreri
- 4University Campus Biomedico, Rome, Italy
- 5University of Eastern Finland
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34
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Hsu TY, Tseng P, Liang WK, Cheng SK, Juan CH. Transcranial direct current stimulation over right posterior parietal cortex changes prestimulus alpha oscillation in visual short-term memory task. Neuroimage 2014; 98:306-13. [DOI: 10.1016/j.neuroimage.2014.04.069] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 04/11/2014] [Accepted: 04/23/2014] [Indexed: 11/25/2022] Open
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Dähne S, Meinecke FC, Haufe S, Höhne J, Tangermann M, Müller KR, Nikulin VV. SPoC: A novel framework for relating the amplitude of neuronal oscillations to behaviorally relevant parameters. Neuroimage 2014; 86:111-22. [DOI: 10.1016/j.neuroimage.2013.07.079] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 06/17/2013] [Accepted: 07/30/2013] [Indexed: 10/26/2022] Open
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Abstract
Human capability to concurrently attend and perceive multiple visual objects has a limited and individual capacity of 2-4 objects. Neuronal mechanisms that support the perception of multiple objects and underlie these attentional capacity limits have remained unclear. We investigated the role of neuronal oscillations in multiobject visual perception and in limiting the attentional capacity. To this end, we used parametric multiobject tracking tasks, MEG and EEG recordings, and data-driven source-space analyses to localize the neuronal substrates of task performance. Three lines of evidence suggested a mechanistic role for neuronal oscillations in multiobject attention. First, oscillation amplitudes preceding target events were distinct for subsequently detected and undetected targets and also predicted reaction times to the target events. Second, suppression of θ to low-β (<20 Hz) and strengthening of high-β to γ (20-90 Hz) oscillations in frontoparietal and visual regions were correlated with attentional load. Third, the load-dependent strengthening of γ (30-90 Hz) band oscillations in lateral prefrontal, posterior parietal, and visual cortices predicted interindividual variability in attentional capacity. A progressive recruitment of γ oscillations in sensory, attentional, and executive networks is thus directly correlated with multiobject attentional demands and, in particular, with the individual capability to consciously attend and perceive multiple visual objects concurrently. These data support the hypothesis that γ oscillations contribute both to neuronal object representations and to attentional and executive processing.
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37
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Manasseh G, de Balthasar C, Sanguinetti B, Pomarico E, Gisin N, de Peralta RG, Andino SLG. Retinal and post-retinal contributions to the quantum efficiency of the human eye revealed by electrical neuroimaging. Front Psychol 2013; 4:845. [PMID: 24302913 PMCID: PMC3831599 DOI: 10.3389/fpsyg.2013.00845] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Accepted: 10/14/2013] [Indexed: 11/13/2022] Open
Abstract
The retina is one of the best known quantum detectors with rods able to reliably respond to single photons. However, estimates on the number of photons eliciting conscious perception, based on signal detection theory, are systematically above these values after discounting by retinal losses. One possibility is that there is a trade-off between the limited motor resources available to living systems and the excellent reliability of the visual photoreceptors. On this view, the limits to sensory thresholds are not set by the individual reliability of the receptors within each sensory modality (as often assumed) but rather by the limited central processing and motor resources available to process the constant inflow of sensory information. To investigate this issue, we reproduced the classical experiment from Hetch aimed to determine the sensory threshold in human vision. We combined a careful physical control of the stimulus parameters with high temporal/spatial resolution recordings of EEG signals and behavioral variables over a relatively large sample of subjects (12). Contrarily to the idea that the limits to visual sensitivity are fully set by the statistical fluctuations in photon absorption on retinal photoreceptors we observed that the state of ongoing neural oscillations before any photon impinges the retina helps to determine if the responses of photoreceptors have access to central conscious processing. Our results suggest that motivational and attentional off-retinal mechanisms play a major role in reducing the QE efficiency of the human visual system when compared to the efficiency of isolated retinal photoreceptors. Yet, this mechanism might subserve adaptive behavior by enhancing the overall multisensory efficiency of the whole system composed by diverse reliable sensory modalities.
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38
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Lou B, Li Y, Philiastides MG, Sajda P. Prestimulus alpha power predicts fidelity of sensory encoding in perceptual decision making. Neuroimage 2013; 87:242-51. [PMID: 24185020 DOI: 10.1016/j.neuroimage.2013.10.041] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 10/08/2013] [Accepted: 10/18/2013] [Indexed: 11/26/2022] Open
Abstract
Pre-stimulus α power has been shown to correlate with the behavioral accuracy of perceptual decisions. In most cases, these correlations have been observed by comparing α power for different behavioral outcomes (e.g. correct vs incorrect trials). In this paper we investigate such covariation within the context of behaviorally-latent fluctuations in task-relevant post-stimulus neural activity. Specially we consider variations of pre-stimulus α power with post-stimulus EEG components in a two alternative forced choice visual discrimination task. EEG components, discriminative of stimulus class, are identified using a linear multivariate classifier and only the variability of the components for correct trials (regardless of stimulus class, and for nominally identical stimuli) are correlated with the corresponding pre-stimulus α power. We find a significant relationship between the mean and variance of the pre-stimulus α power and the variation of the trial-to-trial magnitude of an early post-stimulus EEG component. This relationship is not seen for a later EEG component that is also discriminative of stimulus class and which has been previously linked to the quality of evidence driving the decision process. Our results suggest that early perceptual representations, rather than temporally later neural correlates of the perceptual decision, are modulated by pre-stimulus state.
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Affiliation(s)
- Bin Lou
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Yun Li
- Department of Biomedical Engineering, Tsinghua University, Beijing, China
| | | | - Paul Sajda
- Department of Biomedical Engineering, Columbia University, New York, NY, USA.
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Toepel U, Ohla K, Hudry J, le Coutre J, Murray MM. Verbal labels selectively bias brain responses to high-energy foods. Neuroimage 2013; 87:154-63. [PMID: 24185017 DOI: 10.1016/j.neuroimage.2013.10.038] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Revised: 09/05/2013] [Accepted: 10/19/2013] [Indexed: 11/18/2022] Open
Abstract
The influence of external factors on food preferences and choices is poorly understood. Knowing which and how food-external cues impact the sensory processing and cognitive valuation of food would provide a strong benefit toward a more integrative understanding of food intake behavior and potential means of interfering with deviant eating patterns to avoid detrimental health consequences for individuals in the long run. We investigated whether written labels with positive and negative (as opposed to 'neutral') valence differentially modulate the spatio-temporal brain dynamics in response to the subsequent viewing of high- and low-energetic food images. Electrical neuroimaging analyses were applied to visual evoked potentials (VEPs) from 20 normal-weight participants. VEPs and source estimations in response to high- and low- energy foods were differentially affected by the valence of preceding word labels over the ~260-300 ms post-stimulus period. These effects were only observed when high-energy foods were preceded by labels with positive valence. Neural sources in occipital as well as posterior, frontal, insular and cingulate regions were down-regulated. These findings favor cognitive-affective influences especially on the visual responses to high-energetic food cues, potentially indicating decreases in cognitive control and goal-adaptive behavior. Inverse correlations between insular activity and effectiveness in food classification further indicate that this down-regulation directly impacts food-related behavior.
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Affiliation(s)
- Ulrike Toepel
- Laboratory for Investigative Neurophysiology, Department of Clinical Neurosciences, Vaudois University Hospital Center, University of Lausanne, Switzerland; Department of Radiology, Vaudois University Hospital Center, University of Lausanne, Switzerland.
| | - Kathrin Ohla
- Nestlé Research Center, Vers-chez-les-Blanc, Lausanne, Switzerland; German Institute of Human Nutrition Potsdam-Rehbrücke, Nuthetal, Germany
| | - Julie Hudry
- Nestlé Research Center, Vers-chez-les-Blanc, Lausanne, Switzerland
| | - Johannes le Coutre
- Nestlé Research Center, Vers-chez-les-Blanc, Lausanne, Switzerland; The University of Tokyo, Organization for Interdisciplinary Research Projects, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Micah M Murray
- Laboratory for Investigative Neurophysiology, Department of Clinical Neurosciences, Vaudois University Hospital Center, University of Lausanne, Switzerland; Department of Radiology, Vaudois University Hospital Center, University of Lausanne, Switzerland; Electroencephalography Brain Mapping Core, Center for Biomedical Imaging (CIBM) of Lausanne and Geneva, Switzerland
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40
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Melgari J, Zappasodi F, Porcaro C, Tomasevic L, Cassetta E, Rossini P, Tecchio F. Movement-induced uncoupling of primary sensory and motor areas in focal task-specific hand dystonia. Neuroscience 2013; 250:434-45. [DOI: 10.1016/j.neuroscience.2013.07.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Revised: 06/10/2013] [Accepted: 07/03/2013] [Indexed: 11/28/2022]
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41
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Bourquin NMP, Murray MM, Clarke S. Location-independent and location-linked representations of sound objects. Neuroimage 2013; 73:40-9. [DOI: 10.1016/j.neuroimage.2013.01.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Revised: 01/14/2013] [Accepted: 01/16/2013] [Indexed: 11/24/2022] Open
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42
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Temporal characteristics of the influence of punishment on perceptual decision making in the human brain. J Neurosci 2013; 33:3939-52. [PMID: 23447604 DOI: 10.1523/jneurosci.4151-12.2013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Perceptual decision making is the process by which information from sensory systems is combined and used to influence our behavior. In addition to the sensory input, this process can be affected by other factors, such as reward and punishment for correct and incorrect responses. To investigate the temporal dynamics of how monetary punishment influences perceptual decision making in humans, we collected electroencephalography (EEG) data during a perceptual categorization task whereby the punishment level for incorrect responses was parametrically manipulated across blocks of trials. Behaviorally, we observed improved accuracy for high relative to low punishment levels. Using multivariate linear discriminant analysis of the EEG, we identified multiple punishment-induced discriminating components with spatially distinct scalp topographies. Compared with components related to sensory evidence, components discriminating punishment levels appeared later in the trial, suggesting that punishment affects primarily late postsensory, decision-related processing. Crucially, the amplitude of these punishment components across participants was predictive of the size of the behavioral improvements induced by punishment. Finally, trial-by-trial changes in prestimulus oscillatory activity in the alpha and gamma bands were good predictors of the amplitude of these components. We discuss these findings in the context of increased motivation/attention, resulting from increases in punishment, which in turn yields improved decision-related processing.
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43
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Reduced occipital alpha power indexes enhanced excitability rather than improved visual perception. J Neurosci 2013; 33:3212-20. [PMID: 23407974 DOI: 10.1523/jneurosci.3755-12.2013] [Citation(s) in RCA: 141] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Several studies have demonstrated that prestimulus occipital alpha-band activity substantially influences subjective perception and discrimination of near-threshold or masked visual stimuli. Here, we studied the role of prestimulus power fluctuations in two visual phenomena called double-flash illusion (DFI) and fusion effect (FE), both consisting of suprathreshold stimuli. In both phenomena, human subjects' perception varies on a trial-by-trial basis between perceiving one or two visual stimuli, despite constant stimulation. In the FE, two stimuli correspond to veridical perception. In the DFI, two stimuli correspond to an illusory perception. This provides for a critical test of whether reduced alpha power indeed promotes veridical perception in general. We find that in both, DFI and FE, reduced prestimulus occipital alpha predicts the perception of two stimuli, regardless of whether this is veridical (FE) or illusory (DFI). Our results suggest that reduced alpha-band power does not always predict improved visual processing, but rather enhanced excitability. In addition, for the DFI, enhanced prestimulus occipital gamma-band power predicted the perception of two visual stimuli. These findings provide new insights into the role of prestimulus rhythmic activity for visual processing.
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44
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Evidence for a cognitive control network for goal-directed attention in simple sustained attention. Brain Cogn 2013; 81:193-202. [DOI: 10.1016/j.bandc.2012.10.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Revised: 10/23/2012] [Accepted: 10/29/2012] [Indexed: 11/19/2022]
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45
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Andermann ML, Kauramäki J, Palomäki T, Moore CI, Hari R, Jääskeläinen IP, Sams M. Brain state-triggered stimulus delivery: An efficient tool for probing ongoing brain activity. OPEN JOURNAL OF NEUROSCIENCE 2012; 2:5. [PMID: 23275858 PMCID: PMC3531547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
What is the relationship between variability in ongoing brain activity preceding a sensory stimulus and subsequent perception of that stimulus? A challenge in the study of this key topic in systems neuroscience is the relative rarity of certain brain 'states'-left to chance, they may seldom align with sensory presentation. We developed a novel method for studying the influence of targeted brain states on subsequent perceptual performance by online identification of spatiotemporal brain activity patterns of interest, and brain-state triggered presentation of subsequent stimuli. This general method was applied to an electroencephalography study of human auditory selective listening. We obtained online, time-varying estimates of the instantaneous direction of neural bias (towards processing left or right ear sounds). Detection of target sounds was influenced by pre-target fluctuations in neural bias, within and across trials. We propose that brain state-triggered stimulus delivery will enable efficient, statistically tractable studies of rare patterns of ongoing activity in single neurons and distributed neural circuits, and their influence on subsequent behavioral and neural responses.
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Affiliation(s)
- M L Andermann
- Department of Biomedical Engineering and Computational Science, Helsinki University of Technology, Helsinki, Finland ; Brain Research Unit, Low Temperature Laboratory, Helsinki University of Technology, Helsinki, Finland ; Department of Neuroscience, Brown University, Providence, MA, USA
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46
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Bourquin NMP, Spierer L, Murray MM, Clarke S. Neural plasticity associated with recently versus often heard objects. Neuroimage 2012; 62:1800-6. [DOI: 10.1016/j.neuroimage.2012.04.055] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2012] [Revised: 04/18/2012] [Accepted: 04/29/2012] [Indexed: 10/28/2022] Open
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47
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Gilson M, Bürck M, Burkitt AN, van Hemmen JL. Frequency selectivity emerging from spike-timing-dependent plasticity. Neural Comput 2012; 24:2251-79. [PMID: 22734488 DOI: 10.1162/neco_a_00331] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Periodic neuronal activity has been observed in various areas of the brain, from lower sensory to higher cortical levels. Specific frequency components contained in this periodic activity can be identified by a neuronal circuit that behaves as a bandpass filter with given preferred frequency, or best modulation frequency (BMF). For BMFs typically ranging from 10 to 200 Hz, a plausible and minimal configuration consists of a single neuron with adjusted excitatory and inhibitory synaptic connections. The emergence, however, of such a neuronal circuitry is still unclear. In this letter, we demonstrate how spike-timing-dependent plasticity (STDP) can give rise to frequency-dependent learning, thus leading to an input selectivity that enables frequency identification. We use an in-depth mathematical analysis of the learning dynamics in a population of plastic inhibitory connections. These provide inhomogeneous postsynaptic responses that depend on their dendritic location. We find that synaptic delays play a crucial role in organizing the weight specialization induced by STDP. Under suitable conditions on the synaptic delays and postsynaptic potentials (PSPs), the BMF of a neuron after learning can match the training frequency. In particular, proximal (distal) synapses with shorter (longer) dendritic delay and somatically measured PSP time constants respond better to higher (lower) frequencies. As a result, the neuron will respond maximally to any stimulating frequency (in a given range) with which it has been trained in an unsupervised manner. The model predicts that synapses responding to a given BMF form clusters on dendritic branches.
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Affiliation(s)
- Matthieu Gilson
- NeuroEngineering Laboratory, Department of Electrical and Electronic Engineering, University of Melbourne, VIC 3010, Australia; The Bionics Institute, East Melbourne, VIC 3002, Australia; NICTA the Victorian Research Lab, University of Melbourne, VIC 3010, Australia; and RIKEN Brain Science Institute, Saitama 351-0198, Japan
| | - Moritz Bürck
- Physik Department T35, Technische Universitat München, 85748 Garching bei München, Germany, and Bernstein Center for Computational Neuroscience—München, 82152 Martinsried, Germany
| | - Anthony N. Burkitt
- Neuroengineering Laboratory, Department of Electrical and Electronic Engineering, University of Melbourne, VIC 3010, Australia; The Bionics Institute, East Melbourne, VIC 3010, Australia; and Centre for Neural Engineering, University of Melbourne, VIC 3010, Australia
| | - J. Leo van Hemmen
- Physik Department T35, Technische Universitat München, 85748 Garching bei München, Germany, and Bernstein Center for Computational Neuroscience—München, 82152 Martinsried, Germany
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48
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Joundi RA, Brittain JS, Green AL, Aziz TZ, Brown P, Jenkinson N. Oscillatory activity in the subthalamic nucleus during arm reaching in Parkinson's disease. Exp Neurol 2012; 236:319-26. [PMID: 22634757 DOI: 10.1016/j.expneurol.2012.05.013] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Revised: 05/11/2012] [Accepted: 05/16/2012] [Indexed: 11/27/2022]
Abstract
Oscillatory activities in the brain within the beta (15-30 Hz) and gamma (70-90 Hz) ranges have been implicated in the generation of voluntary movement. However, their roles remain unclear. Here, we record local field potential activity from the region of the subthalamic nucleus during movement of the contralateral limb in 11 patients with Parkinson's disease. Patients were on their normal dopaminergic medication and were cued to perform arm-reaching movements after a delay period at three different speeds: 'slow', 'normal', and 'fast'. Beta activity desynchronized earlier in response to the cue indicating an upcoming fast reach than to the cues for slow or normal speed movement. There was no difference in the degree of beta desynchronization between reaching speeds and beta desynchronization was established prior to movement onset in all cases. In contrast, synchronization in the gamma range developed during the reaching movement, and was especially pronounced during fast reaching. Thus the timing of suppression in the beta band depended on task demands, whereas the degree of increase in gamma oscillations depended on movement speed. These findings point to functionally segregated roles for different oscillatory frequencies in motor preparation and performance.
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Affiliation(s)
- Raed A Joundi
- Functional Neurosurgery and Experimental Neurology, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK.
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49
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Schulz E, Tiemann L, Witkovsky V, Schmidt P, Ploner M. γ Oscillations are involved in the sensorimotor transformation of pain. J Neurophysiol 2012; 108:1025-31. [PMID: 22623490 DOI: 10.1152/jn.00186.2012] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Pain signals threat and initiates motor responses to avoid harm. The transformation of pain into a motor response is thus an essential part of pain. Here, we investigated the neural mechanisms subserving the sensorimotor transformation of pain at the cortical level by using electroencephalography. In a simple reaction time experiment, brief painful stimuli were delivered to the left hand of healthy human subjects who responded with button presses of the right hand. The results show that the simple reaction time task was associated with neuronal responses at delta/theta, alpha/beta, and gamma frequencies. The analysis of the relationship between neuronal activity and response speed revealed that gamma oscillations, which were temporally coupled to the painful stimuli, but not temporally coupled to the motor response, predicted reaction times. Lateralization of gamma oscillations indicates that they originate from motor areas rather than from sensory areas. We conclude that gamma oscillations are involved in the sensorimotor transformation of pain whose efficiency they reflect. We hypothesize that the relationship between stimulus-locked gamma oscillations and reaction times reflects a direct thalamo-motor route of nociceptive information that is central to the biological function of pain.
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Affiliation(s)
- Enrico Schulz
- Department of Neurology, Technische Universität München, Munich, Germany.
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50
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Toepel U, Knebel JF, Hudry J, le Coutre J, Murray MM. Gender and weight shape brain dynamics during food viewing. PLoS One 2012; 7:e36778. [PMID: 22590605 PMCID: PMC3349646 DOI: 10.1371/journal.pone.0036778] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Accepted: 04/05/2012] [Indexed: 11/18/2022] Open
Abstract
Hemodynamic imaging results have associated both gender and body weight to variation in brain responses to food-related information. However, the spatio-temporal brain dynamics of gender-related and weight-wise modulations in food discrimination still remain to be elucidated. We analyzed visual evoked potentials (VEPs) while normal-weighted men (n = 12) and women (n = 12) categorized photographs of energy-dense foods and non-food kitchen utensils. VEP analyses showed that food categorization is influenced by gender as early as 170 ms after image onset. Moreover, the female VEP pattern to food categorization co-varied with participants' body weight. Estimations of the neural generator activity over the time interval of VEP modulations (i.e. by means of a distributed linear inverse solution [LAURA]) revealed alterations in prefrontal and temporo-parietal source activity as a function of image category and participants' gender. However, only neural source activity for female responses during food viewing was negatively correlated with body-mass index (BMI) over the respective time interval. Women showed decreased neural source activity particularly in ventral prefrontal brain regions when viewing food, but not non-food objects, while no such associations were apparent in male responses to food and non-food viewing. Our study thus indicates that gender influences are already apparent during initial stages of food-related object categorization, with small variations in body weight modulating electrophysiological responses especially in women and in brain areas implicated in food reward valuation and intake control. These findings extend recent reports on prefrontal reward and control circuit responsiveness to food cues and the potential role of this reactivity pattern in the susceptibility to weight gain.
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Affiliation(s)
- Ulrike Toepel
- The Functional Electrical Neuroimaging Laboratory, Department of Clinical Neurosciences, Vaudois University Hospital Center and University of Lausanne, Lausanne, Switzerland.
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