Modelling the effects of ongoing alpha activity on visual perception: The oscillation-based probability of response

Zazio, Agnese; Schreiber, Marco; Miniussi, Carlo; Bortoletto, Marta

doi:10.1016/j.neubiorev.2020.01.037

Cited by 19 publications

(11 citation statements)

References 109 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, it has been shown that perceptual outcome is also influenced by the phase of alpha-band oscillations in the pre-stimulus window (Busch et al, 2009;Busch & Van Rullen, 2010;Mathewson et al, 2009), supporting the idea of discrete sampling of visual processing (VanRullen, 2016a). Taken together, findings on pre-stimulus power and phase have led to the development of multiple frameworks relying on the core concept of pulsed-inhibition exerted by oscillatory brain activity in the alpha band (Jensen et al, 2014;Jensen & Mazaheri, 2010;Klimesch et al, 2007;Mathewson et al, 2011;Schalk, 2015;Zazio et al, 2020). Nevertheless, so far it is still unclear whether pre-stimulus alpha-band power and phase reflect the same or different mechanisms.…”

Section: Introductionmentioning

confidence: 85%

Pre‐stimulus alpha‐band power and phase fluctuations originate from different neural sources and exert distinct impact on stimulus‐evoked responses

Zazio

Ruhnau

Weisz

et al. 2021

Eur J of Neuroscience

Self Cite

View full text Add to dashboard Cite

Ongoing oscillatory neural activity before stimulus onset influences subsequent visual perception. Specifically, both the power and the phase of oscillations in the alpha-frequency band (9-13 Hz) have been reported to predict the detection of visual stimuli. Up to now, the functional mechanisms underlying pre-stimulus power and phase effects on upcoming visual percepts are debated. Here, we used magnetoencephalography recordings together with a near-threshold visual detection task to investigate the neural generators of pre-stimulus power and phase and their impact on subsequent visual-evoked responses. Pre-stimulus alpha-band power and phase opposition effects were found consistent with previous reports. Source localization suggested clearly distinct neural generators for these pre-stimulus effects: Power effects were mainly found in occipital-temporal regions, whereas phase effects also involved prefrontal areas. In order to be functionally relevant, the pre-stimulus correlates should influence post-stimulus processing. Using a trial-sorting approach, we observed that only pre-stimulus power modulated the Hits versus Misses difference in the evoked response, a well-established post-stimulus neural correlate of nearthreshold perception, such that trials with stronger pre-stimulus power effect showed greater post-stimulus difference. By contrast, no influence of pre-stimulus phase effects were found. In sum, our study shows distinct generators for two pre-stimulus neural patterns predicting visual perception, and that only alpha power impacts the post-stimulus correlate of conscious access. This underlines the functional relevance of prestimulus alpha power on perceptual awareness, while questioning the role of alpha phase.

show abstract

Section: Introductionmentioning

confidence: 85%

Pre‐stimulus alpha‐band power and phase fluctuations originate from different neural sources and exert distinct impact on stimulus‐evoked responses

Zazio

Ruhnau

Weisz

et al. 2021

Eur J of Neuroscience

Self Cite

View full text Add to dashboard Cite

show abstract

“…It has been shown that uctuations of ongoing brain oscillations are linked to variability in behavioral responses, particularly, in visual stimulus detection (Zazio, Schreiber, Miniussi, & Bortoletto, 2020). A decrease of alpha power implies a more liberal detection criterion, whereas the opposite is true for its increase (Iemi & Busch, 2018;Iemi, Chaumon, Crouzet, & Busch, 2017).…”

Section: Objectivementioning

confidence: 99%

Psychological and Electrophysiological Correlates of Word Learning Success

Mkrtychian¹,

Kostromina²,

Gnedykh³

et al. 2021

Psych. Rus.

View full text Add to dashboard Cite

Background. A rich vocabulary supports human achievements in socio-economic activities, education, and communication. It is therefore important to clarify the nature of language acquisition as a complex multidimensional process. However, both the psychological and neurophysiological mechanisms underpinning language learning, as well as the links between them, are still poorly understood. Objective. This study aims to explore the psychological and neurophysiological correlates of successful word acquisition in a person’s native language. Design. Thirty adults read sentences with novel nouns, following which the participants’ electroencephalograms were recorded during a word-reading task. Event-related potentials in response to novel words and alpha oscillation parameters (amplitude, variability, and long-range temporal correlation dynamics) were analyzed. Learning outcomes were assessed at the lexical and semantic levels. Psychological variables measured using Amthauer’s test (verbal abilities), BIS/BAS scales (motivation), and the MSTAT-1 (ambiguity tolerance) and alpha oscillation parameters were factored. Results. Better recognition of novel words was related to two factors which had high factor loadings for all measured alpha oscillation parameters, indicating the role of attention networks and respective neural activity for enabling information processing. More successful learners had lower P200 amplitude, which also suggests higher attention-system involvement. Another factor predicted better acquisition of word meanings for less ambiguity-tolerant students, while the factor which pooled logical conceptual thinking ability and persistence in goal-reaching, positively correlated with acquisition of both word forms and meanings. Conclusion. The psychological factors predominantly correlated with word-learning success in semantic tasks, while neurophysiological variables were linked to performance in the recognition task.

show abstract

“…As PAC has been reported to be critical in transfer of neural information across a wide range of spatio-temporal scales and integrates global communication among neural populations, it is speculated to have high relevance for cognitive processing (Lara et al, 2018;Munia and Aviyente, 2019). More compelling evidence recently supports the above report by highlighting the functional relevance of phase-amplitude coupling in visual perception (Zazio et al, 2020), visuomotor mapping (Tzvi et al, 2016), learning and memory consolidation (Cox et al, 2020).…”

Section: Prolonged Transcorneal Electrical Stimulation-triggered Enha...mentioning

confidence: 68%

Transcorneal Electrical Stimulation Induces Long-Lasting Enhancement of Brain Functional and Directional Connectivity in Retinal Degeneration Mice

Agadagba

Eldaly

Chan

2022

Front. Cell. Neurosci.

View full text Add to dashboard Cite

To investigate neuromodulation of functional and directional connectivity features in both visual and non-visual brain cortices after short-term and long-term retinal electrical stimulation in retinal degeneration mice. We performed spontaneous electrocorticography (ECoG) in retinal degeneration (rd) mice following prolonged transcorneal electrical stimulation (pTES) at varying currents (400, 500 and 600 μA) and different time points (transient or day 1 post-stimulation, 1-week post-stimulation and 2-weeks post-stimulation). We also set up a sham control group of rd mice which did not receive any electrical stimulation. Subsequently we analyzed alterations in cross-frequency coupling (CFC), coherence and directional connectivity of the primary visual cortex and the prefrontal cortex. It was observed that the sham control group did not display any significant changes in brain connectivity across all stages of electrical stimulation. For the stimulated groups, we observed that transient electrical stimulation of the retina did not significantly alter brain coherence and connectivity. However, for 1-week post-stimulation, we identified enhanced increase in theta-gamma CFC. Meanwhile, enhanced coherence and directional connectivity appeared predominantly in theta, alpha and beta oscillations. These alterations occurred in both visual and non-visual brain regions and were dependent on the current amplitude of stimulation. Interestingly, 2-weeks post-stimulation demonstrated long-lasting enhancement in network coherence and connectivity patterns at the level of cross-oscillatory interaction, functional connectivity and directional inter-regional communication between the primary visual cortex and prefrontal cortex. Application of electrical stimulation to the retina evidently neuromodulates brain coherence and connectivity of visual and non-visual cortices in retinal degeneration mice and the observed alterations are largely maintained. pTES holds strong possibility of modulating higher cortical functions including pathways of cognition, awareness, emotion and memory.

show abstract

Modelling the effects of ongoing alpha activity on visual perception: The oscillation-based probability of response

Abstract: HIGHLIGHTS-A novel, interdisciplinary model to link prestimulus oscillations and perception -Alpha-gamma cross-frequency predicts probability of response to visual stimuli -Different meso-scale neural mechanisms selectively affect the psychometric function

Cited by 19 publications

References 109 publications

Pre‐stimulus alpha‐band power and phase fluctuations originate from different neural sources and exert distinct impact on stimulus‐evoked responses

Pre‐stimulus alpha‐band power and phase fluctuations originate from different neural sources and exert distinct impact on stimulus‐evoked responses

Psychological and Electrophysiological Correlates of Word Learning Success

Transcorneal Electrical Stimulation Induces Long-Lasting Enhancement of Brain Functional and Directional Connectivity in Retinal Degeneration Mice

Contact Info

Product

Resources

About