Visual Areas Exert Feedforward and Feedback Influences through Distinct Frequency Channels

Bastos, André M.; Vezoli, Julien; Bosman, Conrado A.; Schoffelen, Jan‐Mathijs; Oostenveld, Robert; Dowdall, Jarrod Robert; Weerd, Peter De; Kennedy, Henry; Fries, Pascal

doi:10.1016/j.neuron.2014.12.018

Cited by 1,178 publications

(1,274 citation statements)

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“…Overall, these findings highlight the role of the beta-band frequency channel in predictive processing: beta effects have been observed both in the domain of local power modulations (poststimulus beta power increase, as in Arnal et al, 2011) and in the analysis of larger-scale brain connectivity (increase pre-stimulus beta connectivity, as in Bastos et al, 2015). However, if the internal forward models employed in language production are involved also in language prediction we should observe pre-stimulus beta power desynchronization during language comprehension (see also pre-stimulus beta synchronization associated to predictive timing, Arnal et al, 2014).…”

Section: Oscillatory Dynamics Reflecting Pre-stimulus Predictionmentioning

confidence: 71%

“…Bastos et al (2015) analyzed the oscillatory dynamics of the primate visual system employing electrocorticography recordings from grids implanted along the whole visual system of monkeys. They observed that increased coherence in the beta band was associated with feedback influences from higher processing regions to primary visual regions.…”

Section: Oscillatory Dynamics Reflecting Pre-stimulus Predictionmentioning

confidence: 99%

“…In an MEG study, Arnal, Wyart & Giraud (2011) found that violating intermodal speech expectations was accompanied by increased beta oscillatory activity in a multi-sensory brain region indicated that pre-frontal brain regions drive the recruitment of source information to develop predictions and could then show beta band modulations related to the development of forward models (as in language production studies) in the pre-stimulus time interval (Bastos et al, 2015).…”

Section: Oscillatory Dynamics Reflecting Pre-stimulus Predictionmentioning

confidence: 99%

“…These last findings are in line with predictive coding theories pointing to the crucial role of beta-band activity in top-down modulating of the perception of incoming stimuli. Beta band activity has been associated to topdown brain activity (Bastos et al, 2012(Bastos et al, , 2015 and the evidence for such effects in frontal regions could reflect high-level planning of subsequent peripheral interactions with the external environment (Clark, 2013;Pickering & Garrod, 2007).…”

Section: To Be(ta) or Not To Be(ta): That Is The Questionmentioning

confidence: 99%

See 3 more Smart Citations

Is there a common oscillatory brain mechanism for producing and predicting language?

Molinaro

Monsalve

2015

Language, Cognition and Neuroscience

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Section: Oscillatory Dynamics Reflecting Pre-stimulus Predictionmentioning

confidence: 71%

Section: Oscillatory Dynamics Reflecting Pre-stimulus Predictionmentioning

confidence: 99%

Section: Oscillatory Dynamics Reflecting Pre-stimulus Predictionmentioning

confidence: 99%

Section: To Be(ta) or Not To Be(ta): That Is The Questionmentioning

confidence: 99%

See 2 more Smart Citations

Is there a common oscillatory brain mechanism for producing and predicting language?

Molinaro

Monsalve

2015

Language, Cognition and Neuroscience

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“…This is of particular relevance to feedback modulation because it has been shown that across many different cortical regions feedforward signalling involves synchronization at gamma frequencies and that feedback modulates feedforward signalling via synchronization at beta frequencies (Bastos et al, 2015).…”

Section: Overview Of the Neurobiological Evidencementioning

confidence: 99%

On the functions, mechanisms, and malfunctions of intracortical contextual modulation

Phillips

Clark

Silverstein

2015

Neuroscience & Biobehavioral Reviews

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A broad neuron-centric conception of contextual modulation is reviewed and re-assessed in the light of recent neurobiological studies of amplification, suppression, and synchronization. Behavioural and computational studies of perceptual and higher cognitive functions that depend on these processes are outlined, and evidence that those functions and their neuronal mechanisms are impaired in schizophrenia is summarized. Finally, we compare and assess the long-term biological functions of contextual modulation at the level of computational theory as formalized by the theories of coherent infomax and free energy reduction. We conclude that those theories, together with the many empirical findings reviewed, show how contextual modulation at the neuronal level enables the cortex to flexibly adapt the use of its knowledge to current circumstances by amplifying and grouping relevant activities and by suppressing irrelevant activities.

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Association of Magnetoencephalographically Measured High-Frequency Oscillations in Visual Cortex With Circuit Dysfunctions in Local and Large-scale Networks During Emerging Psychosis

et al. 2020

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IMPORTANCE Psychotic disorders are characterized by impairments in neural oscillations, but the nature of the deficit, the trajectory across illness stages, and functional relevance remain unclear. OBJECTIVES To examine whether changes in spectral power, phase locking, and functional connectivity in visual cortex are present during emerging psychosis and whether these abnormalities are associated with clinical outcomes. DESIGN, SETTING, AND PARTICIPANTS In this cross-sectional study, participants meeting clinical high-risk criteria for psychosis, participants with first-episode psychosis, participants with affective disorders and substance abuse, and a group of control participants were recruited. Participants underwent measurements with magnetoencephalography and magnetic resonance imaging. Data analysis was carried out between 2018 and 2019. MAIN OUTCOMES AND MEASURES Magnetoencephalographical activity was examined in the 1to 90-Hz frequency range in combination with source reconstruction during a visual grating task. Event-related fields, power modulation, intertrial phase consistency, and connectivity measures in visual and frontal cortices were associated with neuropsychological scores, psychosocial functioning, and clinical symptoms as well as persistence of subthreshold psychotic symptoms at 12 months. RESULTS The study participants included those meeting clinical high-risk criteria for psychosis (n = 119; mean [SD] age, 22 [4.4] years; 32 men), 26 patients with first-episode psychosis (mean [SD] age, 24 [4.2] years; 16 men), 38 participants with affective disorders and substance abuse (mean [SD] age, 23 [4.7] years; 11 men), and 49 control participants (mean age [SD], 23 [3.6] years; 16 men). Clinical high-risk participants and patients with first-episode psychosis were characterized by reduced phase consistency of β/γ-band oscillations in visual cortex (d = 0.63/d = 0.93). Moreover, the first-episode psychosis group was also characterized by reduced occipital γ-band power (d = 1.14) and altered visual cortex connectivity (d = 0.74-0.84). Impaired fronto-occipital connectivity was present in both clinical high-risk participants (d = 0.54) and patients with first-episode psychosis (d = 0.84). Importantly, reductions in intertrial phase coherence predicted persistence of subthreshold psychosis in clinical high-risk participants (receiver operating characteristic area under curve = 0.728; 95% CI, 0.612-0.841; P = .001). CONCLUSIONS AND RELEVANCE High-frequency oscillations are impaired in the visual cortex during emerging psychosis and may be linked to behavioral and clinical impairments. Impaired phase consistency of γ-band oscillations was also associated with the persistence of subthreshold psychosis, suggesting that magnetoencephalographical measured neural oscillations could constitute a biomarker for clinical staging of emerging psychosis.

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Visual Areas Exert Feedforward and Feedback Influences through Distinct Frequency Channels

Cited by 1,178 publications

References 50 publications

Is there a common oscillatory brain mechanism for producing and predicting language?

Is there a common oscillatory brain mechanism for producing and predicting language?

On the functions, mechanisms, and malfunctions of intracortical contextual modulation

Association of Magnetoencephalographically Measured High-Frequency Oscillations in Visual Cortex With Circuit Dysfunctions in Local and Large-scale Networks During Emerging Psychosis

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