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Solbakk, Anne-Kristin; Hope, Mikael; Solli, Sandra; Leske, Sabine Liliana; Foldal, Maja Dyhre & Blenkmann, Alejandro Omar
(2024).
Research seminar .
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Rezende Carvalho, Vinicius; Collavini, Santiago; Kochen, Silvia; Solbakk, Anne-Kristin & Blenkmann, Alejandro Omar
(2024).
Human single-neuron responses to a local-global oddball paradigm.
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Rezende Carvalho, Vinicius; Collavini, Santiago; Kochen, Silvia; Solbakk, Anne-Kristin & Blenkmann, Alejandro Omar
(2024).
Single-neuron responses to a multifeature oddball paradigm.
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Solli, Sandra; Danielsen, Anne; Leske, Sabine Liliana; Blenkmann, Alejandro Omar; Doelling, Keith & Solbakk, Anne-Kristin
[Vis alle 7 forfattere av denne artikkelen]
(2024).
Rhythm-based temporal expectations: Unique contributions of predictability and periodicity.
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Blenkmann, Alejandro Omar; Volehaugen, Vegard Akselsson; Rezende Carvalho, Vinicius; Leske, Sabine Liliana; Llorens, Anais & Funderud, Ingrid
[Vis alle 14 forfattere av denne artikkelen]
(2024).
An intracranial EEG study on auditory deviance detection.
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Leske, Sabine Liliana; Endestad, Tor; Volehaugen, Vegard Akselsson; Foldal, Maja Dyhre; Blenkmann, Alejandro Omar & Solbakk, Anne-Kristin
[Vis alle 7 forfattere av denne artikkelen]
(2024).
Predicting the Beat Bin: Beta Oscillations Predict
the Envelope Sharpness in a Rhythmic Sequence
.
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Basiński, Krzysztof; Dom?alski, Tomasz & Blenkmann, Alejandro Omar
(2024).
The effect of harmonicity on mismatch negativity responses to different auditory features.
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Blenkmann, Alejandro Omar
(2024).
Electrophysiological correlates of auditory regularity expectations and violations at short and long temporal scales: Studies in intracranial EEG and prefrontal cortex lesion patients.
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Blenkmann, Alejandro Omar
(2024).
The role of the Orbitofrontal Cortex in building predictions and detecting violations.
-
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Asko, Olgerta; Volehaugen, Vegard Akselsson; Leske, Sabine Liliana; Funderud, Ingrid; Llorens, Ana?s & Ivanovic, Jugoslav
[Vis alle 12 forfattere av denne artikkelen]
(2024).
Predictive encoding of deviant tone sequences in the human prefrontal cortex.
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Volehaugen, Vegard Akselsson; Leske, Sabine Liliana; Funderud, Ingerid; Rezende Carvalho, Vinicius; Endestad, Tor & Solbakk, Anne-Kristin
[Vis alle 7 forfattere av denne artikkelen]
(2024).
Unheard Surprises: Attention-Dependent Neocortical Dynamics Following Unexpected Omissions Revealed by Intracranial EEG.
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Asko, Olgerta; Volehaugen, Vegard Akselsson; Leske, Sabine Liliana; Funderud, Ingrid; Anais, Llorens & Ivanovic, Jugoslav
[Vis alle 12 forfattere av denne artikkelen]
(2024).
Predictive encoding of deviant tone sequences in the human prefrontal cortex.
Vis sammendrag
The ability to use predictive information to guide perception and action relies heavily on the prefrontal cortex (PFC), yet the involvement of its subregions in predictive processes remains unclear. Recent perspectives propose that the orbitofrontal cortex (OFC) generates predictions about perceptual events, actions, and their outcomes while the lateral prefrontal cortex (LPFC) is involved in prospective functions, which support predictive processes, such as selective attention, working memory, response preparation or inhibition. To further delineate the roles of these PFC areas in predictive processing, we investigated whether lesions would impair the ability to build predictions of future events and detect deviations from expected regularities. We used an auditory deviance detection task, in which the structural regularities of played tones were controlled at two hierarchical levels by rules defined at a local (i.e., between tones within sequences) and global (i.e., between sequences) level.
We have recently shown that OFC lesions affect detecting prediction violations at two hierarchical levels of rule abstraction, i.e., altered MMN and P3a to local and simultaneous local + global prediction violations (https://doi.org/10.7554/eLife.86386). Now, we focus on the task's predictive aspect and present the latest results showing the involvement of PFC subregions in anticipation of deviances informed by implicit predictive information.
Behavioral data shows that deviance expectancy induced faster deviance detection in healthy adults (n=22), suggesting that participants track a state space representation of the task and anticipate upcoming deviant sequences.
The analysis of EEG data from patients with focal lesions to the OFC (n = 12) or LPFC (n = 10), and SEEG from the same areas in patients with epilepsy (n = 7), revealed interesting differences. Healthy adults (n = 15) showed modulations of the Contingent Negative Variation (CNV) – a marker of anticipatory activity - tracking the expectancy of deviant tone sequences. However, patients with OFC lesions lacked CNV sensitivity to the predictive context, while patients with LPFC lesions showed moderate sensitivity compared to healthy adults. These results were further supported by intracranial recordings, which revealed expectancy modulation of the high-frequency broadband signal from electrodes in OFC and LPFC, with an earlier latency of activity modulation for the OFC and a later one for the LPFC.
Altogether, the complementary approach from behavioral, intracerebral EEG, scalp EEG, and causal lesion data provides compelling evidence for the distinct engagement of the two prefrontal areas in predicting future events and signaling deviations.
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Blenkmann, Alejandro Omar
(2024).
Audiopred Project: Neurophysiological mechanisms of auditory predictions.
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Rezende Carvalho, Vinicius
(2024).
Da trajetória acadêmica à experiência no exterior (From academic trajectory to experience abroad).
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Rezende Carvalho, Vinicius; Collavini, Santiago; Kochen, Silvia; Solbakk, Anne-Kristin & Blenkmann, Alejandro Omar
(2023).
Single-neuron responses to a multifeature oddball paradigm.
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Leske, Sabine Liliana; Endestad, Tor; Volehaugen, Vegard; Foldal, Maja Dyhre; Blenkmann, Alejandro Omar & Solbakk, Anne-Kristin
[Vis alle 7 forfattere av denne artikkelen]
(2023).
Predicting the Beat Bin – Beta Oscillations Support Top-Down Prediction of The Temporal Precision of a Beat .
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Rezende Carvalho, Vinicius; Mendes, Eduardo Mazoni; Cash, Sydney & Moraes, Márcio
(2023).
Auditory steady-state responses with stereoelectroencephalography: distribution and relation to seizure onset zone.
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Solli, Sandra; Danielsen, Anne; Leske, Sabine Liliana; Blenkmann, Alejandro Omar; Solbakk, Anne-Kristin & Endestad, Tor
(2023).
Periodic vs Aperiodic Temporal Predictions: Shared or Separate Mechanisms?
.
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Asko, Olgerta; Solbakk, Anne-Kristin; Leske, Sabine Liliana; Meling, Torstein Ragnar; Knight, Robert T. & Endestad, Tor
[Vis alle 7 forfattere av denne artikkelen]
(2023).
The orbitofrontal cortex (OFC) has a critical role in the generation of high-level expectations.
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Blenkmann, Alejandro Omar & Puppio, Daniel
(2023).
Interview at "La Ma?ana de la Radio" FM 97.3.
[Radio].
Neuquen, Argentina.
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Blenkmann, Alejandro Omar
(2023).
Altered hierarchical auditory predictive processing after lesions to the orbitofrontal cortex - Quantifying Evoked Responses through Encoded Information.
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Blenkmann, Alejandro Omar; Ianni, Pablo & Verdugo, Rodrigo
(2023).
Interview for TV show "Salud en Movimiento", Radio Television Neuquén.
[TV].
Neuquen, Argentina.
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Blenkmann, Alejandro Omar; Asko, Olgerta; Volehaugen, Vegard; Foldal, Maja Dyhre; Solli, Sandra & Leske, Sabine Liliana
[Vis alle 9 forfattere av denne artikkelen]
(2023).
Auditory perception, memory, and predictions.
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Blenkmann, Alejandro Omar & Agrawal, Rahul Omprakash
(2023).
Intracranial Electrode Localization workshop.
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Blenkmann, Alejandro Omar; Solbakk, Anne-Kristin; Leske, Sabine Liliana; Llorens, Ana?s; Funderud, Ingrid & Larsson, P?l Gunnar
[Vis alle 10 forfattere av denne artikkelen]
(2023).
Temporal and precentral brain activity in automatic auditory deviance detection. Evidence from human intracranial EEG recordings.
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Blenkmann, Alejandro Omar
(2023).
Neural correlates of auditory predictions using intracranial EEG.
Vis sammendrag
Website https://gumed.edu.pl/76777.html
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Blenkmann, Alejandro Omar
(2023).
Expectation and attention in auditory prediction.
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Blenkmann, Alejandro Omar
(2023).
Neurophysiological Mechanisms of Human Auditory Predictions: From population- to single neuron recordings.
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Volehaugen, Vegard; Leske, Sabine Liliana; Funderud, Ingrid; Llorens, Ana?s; Carvalho, Vinicius Rezende & Endestad, Tor
[Vis alle 8 forfattere av denne artikkelen]
(2023).
Echoes of the unheard: An intracranial electrophysiology study of expectation and attention in auditory omission processing.
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Solli, Sandra; Danielsen, Anne; Leske, Sabine Liliana; Blenkmann, Alejandro Omar; Solbakk, Anne-Kristin & Endestad, Tor
(2023).
Both periodic and aperiodic rhythms facilitate
perceptual processing.
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Solbakk, Anne-Kristin; Blenkmann, Alejandro Omar; Leske, Sabine Liliana & Endestad, Tor
(2023).
Orbitofrontal lesion impacts formation of auditory expectations.
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Asko, Olgerta; Solbakk, Anne-Kristin; Leske, Sabine Liliana; Meling, Torstein Ragnar; Knight, Robert T. & Endestad, Tor
[Vis alle 7 forfattere av denne artikkelen]
(2023).
Orbitofrontal lesion impacts formation of auditory expectations.
Vis sammendrag
Current findings of orbitofrontal cortex (OFC) function suggest that this region might have a role in the generation of prediction error signals associated with top-down expectation of upcoming stimuli. We investigated the impact of lesions to the OFC on the Contingent Negative Variation (CNV), an electrophysiological marker of cognitive expectation and time perception. Twelve OFC patients and fifteen healthy controls performed an auditory local-global paradigm while brain electrical activity was recorded. The structural regularities of the tones were controlled at two hierarchical levels by rules defined at a local (i.e., between tones within sequences) level with a short timescale and at a global (i.e., between sequences) level with a longer timescale. At the global level, deviant tone sequences were interspersed among standard tone sequences in a pseudorandom order, rendering some deviant sequences more anticipated than others. We found that healthy controls exhibited CNV build-up before the occurrence of deviant sequences. The CNV drift rate was modulated by the expectancy of deviant sequences (i.e., the higher the expectancy, the higher the CNV drift rate), reflecting their ability to anticipate when a deviant tone sequence would occur. However, patients with OFC lesions did not show CNV drift modulations by the expectancy of the deviant tone sequences, indicating impaired anticipation of these upcoming events. These findings suggest involvement of the OFC in generating auditory expectations based on the contextual and temporal structure of the task.
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Bonetti, Leonardo; Foldal, Maja Dyhre; Leske, Sabine Liliana; Asko, Olgerta; Volehaugen, Vegard Akselsson & Solli, Sandra
[Vis alle 7 forfattere av denne artikkelen]
(2023).
Auditory perception, memory, and predictions .
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Volehaugen, Vegard; Leske, Sabine Liliana; Endestad, Tor; Solbakk, Anne-Kristin & Blenkmann, Alejandro Omar
(2022).
Violation of rule-based auditory patterns is detected independently of attention.
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Blenkmann, Alejandro Omar; Solbakk, Anne-Kristin; Leske, Sabine Liliana; Llorens, Ana?s; Funderud, Ingrid & Collavini, Santiago
[Vis alle 13 forfattere av denne artikkelen]
(2022).
Human brain network involved in auditory deviance detection. An intracranial EEG study.
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Asko, Olgerta; Blenkmann, Alejandro Omar; Leske, Sabine Liliana; Foldal, Maja Dyhre; Llorens, Ana?s & Funderud, Ingrid
[Vis alle 10 forfattere av denne artikkelen]
(2022).
Altered hierarchical auditory predictive processing after lesions to the orbitofrontal cortex.
Vis sammendrag
In this study, we tested the causal involvement of the OFC in noticing breaches of predictions (i.e., PEs) at different hierarchical levels of task structural complexity. With this aim, we examined the event-related potentials (ERPs) of patients with focal OFC lesions and healthy adults while performing an auditory local-global oddball paradigm. Altogether, we found that after OFC damage, low-level PEs (i.e., processing of stimuli that are unpredicted at the local level) and combined low- and high-level PEs (i.e., processing of stimuli that are unpredicted at both the local and global level) were impacted. However, the processing of standard tones was not affected. We conclude that the OFC may contribute to a top-down process that modulates the deviance detection system in the primary auditory cortices, and may be involved in connecting PEs at lower hierarchical areas with predictions at higher areas. The study sheds new light on the poorly explored deficits of hierarchical auditory prediction in patients with damaged OFC.
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Fuhrer, Julian; Blenkmann, Alejandro Omar; Endestad, Tor; Solbakk, Anne-Kristin & Glette, Kyrre
(2022).
Complexity-Based Encoded Information Quantification in Neurophysiological Recordings.
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Fuhrer, Julian; Glette, Kyrre; Ivanovic, Jugoslav; Larsson, P?l Gunnar; Bekinschtein, Tristan & Kochen, Silvia
[Vis alle 11 forfattere av denne artikkelen]
(2022).
Direct brain recordings reveal continuous encoding of structure in random stimuli.
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Leske, Sabine Liliana
(2022).
Inter-Trial Coherence (ITC).
Vis sammendrag
An introduction to the inter-trial coherence measure (ITC) and how it is applied to EEG data (with example code/scripts in MATLAB). Furthermore caveats of the measure are discussed along with it's relation to phase opposition measures.
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Leske, Sabine Liliana
(2022).
Phase Amplitude Coupling (PAC).
Vis sammendrag
An introduction to the Phase Amplitude Coupling (PAC) measure and how it is applied to EEG data (example code in MATLAB). The caveats of the measure are covered and which sanity checks might be necessary.
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Leske, Sabine Liliana
(2022).
Fourier Transform.
Vis sammendrag
An introduction to the Fourier transform and how it is applied to EEG data. The short time fourier transform (STFT) and different measures (phase and amplitude) derived from it are explained.
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Blenkmann, Alejandro Omar
(2022).
How does the brain process unexpected sounds?
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Blenkmann, Alejandro Omar; Fuhrer, Julian; Glette, Kyrre; Ivanovic, Jugoslav; Larsson, P?l Gunnar & Bekinschtein, Tristan
[Vis alle 11 forfattere av denne artikkelen]
(2022).
Direct brain recordings reveal continuous encoding of structure in random stimuli.
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Blenkmann, Alejandro Omar
(2022).
Auditory deviance detection in the human insula. Evidence from intracranial EEG recordings.
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Blenkmann, Alejandro Omar
(2021).
Some advances in neuroscience using intracranial EEG recordings.
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Blenkmann, Alejandro Omar
(2021).
Electrode localization in intracranial EEG.
From simulations to novel electrode localization and brain-shift correction
algorithms. .