Time Courses of Attentional Modulation in Neural Amplification and Synchronization Measured with Steady-state Visual-evoked Potentials

Kashiwase, Yoshiyuki; Matsumiya, Kazumichi; Kuriki, Ichiro; Shioiri, Satoshi

doi:10.1162/jocn_a_00212

Cited by 71 publications

(90 citation statements)

References 77 publications

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“…Previous studies have typically tested these time courses against a precue baseline during which participants' attention was allocated to a neutral position or feature to estimate shift onset characteristics (Kashiwase, Matsumiya, Kuriki, & Shioiri, 2012;Andersen & Müller, 2010;Müller, 2008;Müller et al, 1998). In our case, it was not feasible to define such a baseline because participants attended to specific features before and after the cue.…”

Section: Spectrotemporal Analysesmentioning

confidence: 99%

Early Visual Cortex Dynamics during Top–Down Modulated Shifts of Feature-Selective Attention

Müller

Trautmann

Keitel

2016

Journal of Cognitive Neuroscience

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Abstract■ Shifting attention from one color to another color or from color to another feature dimension such as shape or orientation is imperative when searching for a certain object in a cluttered scene. Most attention models that emphasize feature-based selection implicitly assume that all shifts in feature-selective attention underlie identical temporal dynamics. Here, we recorded time courses of behavioral data and steady-state visual evoked potentials (SSVEPs), an objective electrophysiological measure of neural dynamics in early visual cortex to investigate temporal dynamics when participants shifted attention from color or orientation toward color or orientation, respectively. SSVEPs were elicited by four random dot kinematograms that flickered at different frequencies. Each random dot kinematogram was composed of dashes that uniquely combined two features from the dimensions color (red or blue) and orientation (slash or backslash). Participants were cued to attend to one feature (such as color or orientation) and respond to coherent motion targets of the to-be-attended feature. We found that shifts toward color occurred earlier after the shifting cue compared with shifts toward orientation, regardless of the original feature (i.e., color or orientation). This was paralleled in SSVEP amplitude modulations as well as in the time course of behavioral data. Overall, our results suggest different neural dynamics during shifts of attention from color and orientation and the respective shifting destinations, namely, either toward color or toward orientation. ■

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Section: Spectrotemporal Analysesmentioning

confidence: 99%

Early Visual Cortex Dynamics during Top–Down Modulated Shifts of Feature-Selective Attention

Müller

Trautmann

Keitel

2016

Journal of Cognitive Neuroscience

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“…The magnitude of a visual response to a flickering stimulus can be tracked by the flicker frequency in the EEG signal [4], [5]. Müller et al [6] measured the time course of attentional modulation by tracking SSVEP amplitude in time and estimated that it takes 600–800 ms for cortical facilitation by visual attention (see also [7], [8], [9]). …”

Section: Introductionmentioning

confidence: 99%

“…Therefore, to compare the time course of the physiological data with that of the behavioral data, it is necessary to assume a time lag between the onsets for neural activities and behavioral performance. Previous studies assumed that the delay was 100–150 ms and evaluated the relations between behavioral and physiological data by subtracting the delay from the latency of attentional modulation of physiological measures [6], [8]. In this study, we developed a novel method, which allows direct comparison of temporal properties between psychophysical and physiological results without making any assumption on the time lag between these measures.…”

Section: Introductionmentioning

confidence: 99%

“…Here, we analyzed the ERPs obtained in an experiment reported elsewhere [8], where we focused on the SSVEP data. In the experiment, two sets of flickering stimuli at different frequencies were presented in the left and right visual fields to evoke SSVEPs, and a target was presented at various moments after cueing to a to-be-attended location.…”

Section: Introductionmentioning

confidence: 99%

“…Participants had to perform a target detection task in order to keep attention on the instructed location. In the previous report [8], we analyzed the SSVEPs to investigate the time course of attentional modulation after cueing and compared them with that of the target detection performance. We concluded that, with assuming the neural delay as 150 ms, attentional modulation of SSVEP phase coherence rather than SSVEP amplitude corresponded more closely to that of the behavioral performance [8].…”

Section: Introductionmentioning

confidence: 99%

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Temporal Dynamics of Visual Attention Measured with Event-Related Potentials

et al. 2013

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How attentional modulation on brain activities determines behavioral performance has been one of the most important issues in cognitive neuroscience. This issue has been addressed by comparing the temporal relationship between attentional modulations on neural activities and behavior. Our previous study measured the time course of attention with amplitude and phase coherence of steady-state visual evoked potential (SSVEP) and found that the modulation latency of phase coherence rather than that of amplitude was consistent with the latency of behavioral performance. In this study, as a complementary report, we compared the time course of visual attention shift measured by event-related potentials (ERPs) with that by target detection task. We developed a novel technique to compare ERPs with behavioral results and analyzed the EEG data in our previous study. Two sets of flickering stimulus at different frequencies were presented in the left and right visual hemifields, and a target or distracter pattern was presented randomly at various moments after an attention-cue presentation. The observers were asked to detect targets on the attended stimulus after the cue. We found that two ERP components, P300 and N2pc, were elicited by the target presented at the attended location. Time-course analyses revealed that attentional modulation of the P300 and N2pc amplitudes increased gradually until reaching a maximum and lasted at least 1.5 s after the cue onset, which is similar to the temporal dynamics of behavioral performance. However, attentional modulation of these ERP components started later than that of behavioral performance. Rather, the time course of attentional modulation of behavioral performance was more closely associated with that of the concurrently recorded SSVEPs analyzed. These results suggest that neural activities reflected not by either the P300 or N2pc, but by the SSVEPs, are the source of attentional modulation of behavioral performance.

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Exploring the temporal dynamics of sustained and transient spatial attention using steady-state visual evoked potentials

et al. 2017

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While the behavioral dynamics as well as the functional network of sustained and transient attention have extensively been studied, their underlying neural mechanisms have most often been investigated in separate experiments. In the present study, participants were instructed to perform an audio-visual spatial attention task. They were asked to attend to either the left or the right hemifield and to respond to deviant transient either auditory or visual stimuli. Steady-state visual evoked potentials (SSVEPs) elicited by two task irrelevant pattern reversing checkerboards flickering at 10 and 15 Hz in the left and the right hemifields, respectively, were used to continuously monitor the locus of spatial attention. The amplitude and phase of the SSVEPs were extracted for single trials and were separately analyzed. Sustained attention to one hemifield (spatial attention) as well as to the auditory modality (intermodal attention) increased the inter-trial phase locking of the SSVEP responses, whereas briefly presented visual and auditory stimuli decreased the single-trial SSVEP amplitude between 200 and 500 ms post-stimulus. This transient change of the single-trial amplitude was restricted to the SSVEPs elicited by the reversing checkerboard in the spatially attended hemifield and thus might reflect a transient re-orienting of attention towards the brief stimuli. Thus, the present results demonstrate independent, but interacting neural mechanisms of sustained and transient attentional orienting.

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Time Courses of Attentional Modulation in Neural Amplification and Synchronization Measured with Steady-state Visual-evoked Potentials

Cited by 71 publications

References 77 publications

Early Visual Cortex Dynamics during Top–Down Modulated Shifts of Feature-Selective Attention

Early Visual Cortex Dynamics during Top–Down Modulated Shifts of Feature-Selective Attention

Temporal Dynamics of Visual Attention Measured with Event-Related Potentials

Exploring the temporal dynamics of sustained and transient spatial attention using steady-state visual evoked potentials

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