Sustained gamma band synchronization in early visual areas reflects the level of selective attention

Kahlbrock, Nina; Butz, Markus; E, May; Schnitzler, Alfons

doi:10.1016/j.neuroimage.2011.07.017

Cited by 34 publications

(28 citation statements)

References 50 publications

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“…This finding fits well with prior evidence of frequency-specific neural synchronization for higher order cognitive processes such as working memory (Huang et al, 2013;Palva et al, 2005;Pesonen et al, 2007;Sauseng et al, 2005;Wu et al, 2007), selective attention (Doesburg et al, 2009;Doesburg and Ward, 2007;Kahlbrock et al, 2012;Maris et al, 2013) and inhibition (Papenberg et al, 2013;Tallet et al, 2009). It is also consistent with increasing evidence that theta oscillations are a neural correlate of the need for cognitive control (see Cavanagh and Frank, 2014;Sauseng et al, 2010).…”

Section: Discussionsupporting

confidence: 90%

Theta frontoparietal connectivity associated with proactive and reactive cognitive control processes

et al. 2015

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Cognitive control involves both proactive and reactive processes. Paradigms that rely on reactive control have shown that frontoparietal oscillatory synchronization in the theta frequency band is associated with interference control. This study examines whether proactive control is also associated with connectivity in the same frontoparietal theta network or involves a distinct neural signature. A task-switching paradigm was used to differentiate between proactive and reactive control processes, involved in preparing to switch or repeat a task and resolving post-target interference, respectively. We confirm that reactive control is associated with frontoparietal theta connectivity. Importantly, we show that proactive control is also associated with theta band oscillatory synchronization but in a different frontoparietal network. These findings support the existence of distinct proactive and reactive cognitive control processes that activate different theta frontoparietal oscillatory networks.

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Section: Discussionsupporting

confidence: 90%

Theta frontoparietal connectivity associated with proactive and reactive cognitive control processes

et al. 2015

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“…Interestingly, recent intracranial EEG studies in humans have suggested that endogenous attention is reflected by sustained broadband gamma-band activity in the dorsolateral prefrontal cortex (DLPFC), medial frontal cortex, superior parietal cortex, and in the frontal eye fields (FEF) (Ossandon et al, 2012). Intracranial EEG studies in human visual cortices have provided evidence for sustained broadband gamma activities that are modulated by selective attention (Tallon-Baudry, Bertrand, Henaff, Isnard, & Fischer, 2005), consistent with similar results obtained in non-invasive MEG measurements (Kahlbrock, Butz, May, & Schnitzler, 2012). Based on these findings, one might expect stronger sustained gamma patterns after voluntary engagement of attention than transient involuntary orienting.…”

Section: Introductionsupporting

confidence: 77%

Dynamic Oscillatory Processes Governing Cued Orienting and Allocation of Auditory Attention

Ahveninen

Huang

Belliveau

et al. 2013

Journal of Cognitive Neuroscience

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In everyday listening situations, we need to constantly switch between alternative sound sources and engage attention according to cues that match our goals and expectations. The exact neuronal bases of these processes are poorly understood. We investigated oscillatory brain networks controlling auditory attention using cortically constrained fMRI-weighted magnetoencephalography/ electroencephalography (MEG/EEG) source estimates. During consecutive trials, subjects were instructed to shift attention based on a cue, presented in the ear where a target was likely to follow. To promote audiospatial attention effects, the targets were embedded in streams of dichotically presented standard tones. Occasionally, an unexpected novel sound occurred opposite to the cued ear, to trigger involuntary orienting. According to our cortical power correlation analyses, increased frontoparietal/temporal 30–100 Hz gamma activity at 200–1400 ms after cued orienting predicted fast and accurate discrimination of subsequent targets. This sustained correlation effect, possibly reflecting voluntary engagement of attention after the initial cue-driven orienting, spread from the temporoparietal junction, anterior insula, and inferior frontal (IFC) cortices to the right frontal eye fields. Engagement of attention to one ear resulted in a significantly stronger increase of 7.5–15 Hz alpha in the ipsilateral than contralateral parieto-occipital cortices 200–600 ms after the cue onset, possibly reflecting crossmodal modulation of the dorsal visual pathway during audiospatial attention. Comparisons of cortical power patterns also revealed significant increases of sustained right medial frontal cortex theta power, right dorsolateral prefrontal cortex and anterior insula/IFC beta power, and medial parietal cortex and posterior cingulate cortex gamma activity after cued vs. novelty-triggered orienting (600–1400 ms). Our results reveal sustained oscillatory patterns associated with voluntary engagement of auditory spatial attention, with the frontoparietal and temporal gamma increases being best predictors of subsequent behavioral performance.

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“…In an MEG study with audio-visual speech stimuli, Kaiser et al 23 found simultaneous attention-dependent modulations in auditory and visual cortex23. In contrast, Kahlbrock et al 24 presented visual gratings accompanied by sound stimuli and found modulated gamma-band responses only in visual cortex24. Our results show enhancement of gamma-band power associated with the allocation of multisensory attention in a network comprising visual and auditory cortex as well as parietal, temporal and frontal regions.…”

Section: Discussionsupporting

confidence: 38%

Oscillatory brain activity during multisensory attention reflects activation, disinhibition, and cognitive control

Friese

Daume

Göschl

et al. 2016

Sci Rep

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In this study, we used a novel multisensory attention paradigm to investigate attention-modulated cortical oscillations over a wide range of frequencies using magnetencephalography in healthy human participants. By employing a task that required the evaluation of the congruence of audio-visual stimuli, we promoted the formation of widespread cortical networks including early sensory cortices as well as regions associated with cognitive control. We found that attention led to increased high-frequency gamma-band activity and decreased lower frequency theta-, alpha-, and beta-band activity in early sensory cortex areas. Moreover, alpha-band coherence decreased in visual cortex. Frontal cortex was found to exert attentional control through increased low-frequency phase synchronisation. Crossmodal congruence modulated beta-band coherence in mid-cingulate and superior temporal cortex. Together, these results offer an integrative view on the concurrence of oscillations at different frequencies during multisensory attention.

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Sustained gamma band synchronization in early visual areas reflects the level of selective attention

Cited by 34 publications

References 50 publications

Theta frontoparietal connectivity associated with proactive and reactive cognitive control processes

Theta frontoparietal connectivity associated with proactive and reactive cognitive control processes

Dynamic Oscillatory Processes Governing Cued Orienting and Allocation of Auditory Attention

Oscillatory brain activity during multisensory attention reflects activation, disinhibition, and cognitive control

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