Oscillatory Beta Activity Predicts Response Speed during a Multisensory Audiovisual Reaction Time Task: A High-Density Electrical Mapping Study

Nathan Kline Institute, Orangeburg, New York, United States
Cerebral Cortex (Impact Factor: 8.67). 12/2006; 16(11):1556-65. DOI: 10.1093/cercor/bhj091
Source: PubMed


Bisensory redundant targets are processed faster than the respective unisensory target stimuli alone as evidenced by substantially faster reaction times (RTs). This multisensory RT facilitation has been interpreted as an expression of integrative processing between the different sensory modalities. However, the neuronal mechanisms underlying the RT facilitation effect are not well understood. Oscillatory responses in the beta frequency range (13-30 Hz) have been related to sensory-motor processing. Here, we investigated whether modulation of beta responses might also underlie the faster RTs seen for multisensory stimuli. Using high-density electrical mapping, we explored the association between early (50-170 ms) multisensory processing in the evoked beta response and RTs recorded during a simple RT task. Subjects were instructed to indicate the appearance of any stimulus in a stream of auditory-alone (A), visual-alone (V), and multisensory (AV) stimuli by a button press. Beta responses were analyzed using Morlet wavelet transformations. Multisensory interactions were found over frontal, occipital, central, and sensory-motor regions. Critically, beta activity correlated with mean RTs over all stimulus types. Significant negative correlations were found for frontal, occipital, and sensory-motor scalp regions. We conclude that the association between oscillatory beta activity and integrative multisensory processing is directly linked to multisensory RT facilitation effects.

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Available from: John J Foxe, Sep 30, 2015
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    • "One possible mechanism that may encode motion congruence across modalities is synchronized neural oscillations. Numerous studies have suggested that oscillatory activity, especially in the beta band (BBA, 13–30 Hz) and gamma band (GBA, N30 Hz), is involved in multisensory processing (Bauer et al., 2009; Hipp et al., 2011; Keil et al., 2012, 2014; Lakatos et al., 2007; Schneider et al., 2011; Senkowski et al., 2006; von Stein et al., 1999; for review see Senkowski et al., 2008). A study by Bauer et al. (2009) showed that the simultaneous presentation of visual and tactile stimuli promotes the cortical processing of visual stimuli by enhancing GBA and – to a lesser extent – reducing BBA in the visual cortex. "
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    ABSTRACT: When touching and viewing a moving surface our visual and somatosensory systems receive congruent spatiotemporal input. Behavioral studies have shown that motion congruence facilitates interplay between visual and tactile stimuli, but the neural mechanisms underlying this interplay are not well understood. Neural oscillations play a role in motion processing and multisensory integration. They may also be crucial for visuotactile motion processing. In this electroencephalography study, we applied linear beamforming to examine the impact of visuotactile motion congruence on beta and gamma band activity (GBA) in visual and somatosensory cortices. Visual and tactile inputs comprised of gratings that moved either in the same or different directions. Participants performed a target detection task that was unrelated to motion congruence. While there were no effects in the beta band (13-21 Hz), the power of GBA (50-80 Hz) in visual and somatosensory cortices was larger for congruent compared with incongruent motion stimuli. This suggests enhanced bottom-up multisensory processing when visual and tactile gratings moved in the same direction. Supporting its behavioral relevance, GBA was correlated with shorter reaction times in the target detection task. We conclude that motion congruence plays an important role for the integrative processing of visuotactile stimuli in sensory cortices, as reflected by oscillatory responses in the gamma band. Copyright © 2015. Published by Elsevier Inc.
    NeuroImage 05/2015; DOI:10.1016/j.neuroimage.2015.05.056 · 6.36 Impact Factor
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    • "rchers (Oldfield,1971, Ellis & Ellis,, 1998, Porac & Coren, 1981; Bendixen, SanMiguel & Schroger, 2012; Wilkinson, 1990). Audio-visual reaction is a very important concept and is studied in areas such as: attention and memory (Grimes, 1990), emotions (Collignon, et. al.,2008) and neurosciences (Schroger & Widmann, 1998;Molholm, et. al.,2006;Senkowski, et. al., 2006; Harrar & Harris, 2008). The preference for one side of the body (handedness, footedness, eye, ear) was investigated and the results can be displayed as following: favouring right hand: 88.2%; favouring right foot: 81.0%; favouring right eye: 71.1%; favouring right ear: 59.1%; same hand and foot: 84%; same ear and eye: 61.8% (Kohfeld, 1"
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    ABSTRACT: Present study is focused on highlighting the effects of fine motor coordination errors in multiple reactions tasks to stimuli measured as correct, incorrect and omitted audio-visual stimuli. The hypotheses assume possible statistically differences in the stimuli reactivity between the group with less fine motor errors and the group with high number of errors (left and right hand and total errors). The instruments were the Labyrinth test B19 and the Determination test (Dt test), both from Vienna Tests System (2012). The results confirm only the hypotheses regarding the differences in stimuli reactivity by the influence of total number of errors.
    Procedia - Social and Behavioral Sciences 05/2015; 187:738-744. DOI:10.1016/j.sbspro.2015.03.156
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    • "The present study and previous studies also indicated that, independent of stimulus modality (auditory or visual), beta responses increase over the right hemisphere (Haenschel et al., 2000; Huster et al., 2013; Makinen et al., 2004; Senkowski et al., 2006; Swann et al., 2009, 2012). 6. "
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    ABSTRACT: The aim of the present study was to investigate the role of beta oscillatory responses upon cognitive load in healthy subjects and in subjects with mild cognitive impairment (MCI). The role of beta oscillations upon cognitive stimulation is least studied in comparison to other frequency bands. The study included 17 consecutive patients with MCI (mean age = 70.8 ± 5.6 years) according to Petersen's criteria, and 17 age- and education-matched normal elderly controls (mean age = 68.5 ± 5.5 years). The experiments used a visual oddball paradigm. EEG was recorded at 30 cortical locations. EEG-evoked power, inter-trial phase synchronization, and event-related beta responses filtered in 15-20 Hz were obtained in response to target and non-target stimuli for both groups of subjects. In healthy subjects, EEG-evoked beta power, inter-trial phase synchronization of beta responses and event-related filtered beta responses were significantly higher in responses to target than non-target stimuli (p < 0.05). In MCI patients, there were no differences in evoked beta power between target and non-target stimuli. Furthermore, upon presentation of visual oddball paradigm, occipital electrodes depict higher beta response in comparison to other electrode sites. The increased beta response upon presentation of target stimuli in healthy subjects implies that beta oscillations could shift the system to an attention state, and had important function in cognitive activity. This may, in future, open the way to consider beta activity as an important operator in brain cognitive processes.
    Clinical neuroimaging 07/2013; 3:39-46. DOI:10.1016/j.nicl.2013.07.003 · 2.53 Impact Factor
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