[Eeglablist] eeglablist Digest, Vol 87, Issue 25

Mon Jan 30 15:45:52 PST 2012

Hi Daniela.  ERPLAB Toolbox, which plugs into EEGLAB, has tools specifically designed for this situation.  You can download it at http://erpinfo.org/erplab/.  See especially the documentation page at http://erpinfo.org/erplab/erplab-documentation/manual/Bin_Operations.html

Steve Luck

> From: Daniela Gledhill <d.gledhill at uni-bremen.de>
> Subject: [Eeglablist] Creating ERPs contralateral and ipsilateral to stimulus presentation
> Date: January 29, 2012 12:55:22 PM PST
> To: <eeglablist at sccn.ucsd.edu>
> 
> 
> Dear all,
> 
> I am doing my PhD in Visual Neuroscience and quite recently started my EEG analysis with EEGLAB.
> In my experiment two stimuli are presented bilaterally with one of them changing it's color. I am trying to create ERPs contra- and ipsilateral to the color change, but not sure how to proceed in EEGLAB.
> 
> There is only one message in the discussion list with the idea of "Swap the data, not the channels. Leave the channels alone." 
> But how does it work? 
> - contralateral:  data of left-hemispheric electrodes for changes on the right side and data of right-hemispheric electrodes for changes on the left side
> - ipsilateral:  data of left-hemispheric electrodes for changes on the left side and data of right hemispheric electrodes for changes on the right side
> 
> It would be wonderful to get some help with that!
> 
> Kind regards from Bremen,
> Dani
> 
> 
> 
> From: Tarik S Bel-Bahar <tarikbelbahar at gmail.com>
> Subject: Re: [Eeglablist] Joint ICA in social interaction paradigm
> Date: January 29, 2012 5:29:00 PM PST
> To: muhammad naeem <naeem6500 at yahoo.com>
> Cc: <eeglablist at sccn.ucsd.edu>
> Reply-To: <tarikbelbahar at gmail.com>
> 
> 
> Hello Naeem, 
> Some quick thoughts...
> These are very early days indeed for two-or more brain studies,
> especially using EEG, although various groups are making inroads,
> see recent work Dumas, from Tognoni, and from Babiloni's groups,
> among others, all of which use diverse methods with EEG.
> If you are using ICA, why not decompose
> each person's data separately, without PCA,
> and then analyze correlations
> between similar ICs across the 
> two individuals, across particular
> conditions. "Similar" ICs may be 
> determined via eeglab's study clustering function (which uses PCA)
> or with the CORRMAP plugin.
> Calhoun et al.'s EEGIFT with group-ICA
> certainly looks like an interesting
> option (attached). 
> Overall, the field is wide open for suggestions,
> so if you come across some new solutions,
> please let the list know!
> An important point is whether 
> you use measures external to EEG 
> to assess some behavioral metric coordination.
> Overall the issue is what you are hunting for.
> See also Hasson and others' forays into 
> cross-correlation across brains.
> I've included some brain based citation below which might be of use to you,
> as well as some non-brain literature that bears directly on two-person or more studies. good luck
> Anders et al., (2011). Flow of affective information between communicating brains. NeuroImage 54, 439–446.
> 
> Astolfi L, Toppi J, De Vico Fallani F, Vecchiato G, Salinari S, Mattia D, Cincotti F, Babiloni F. (2010). Neuroelectrical Hyperscanning Measures Simultaneous Brain Activity in Humans. Brain Topography, 23 (3), 243-256, 2010.
> 
> 
> Dumas G, Nadel J, Soussignan R, Martinerie J, Garnero L (2010) Inter-Brain Synchronization during Social Interaction. PLoS ONE 5(8): e12166
> 
> 
> Schilbach L, Wilms M, Eickhoff SB, Romanzetti S, Tepest R, Bente G, Shah NJ, Fink GR, Vogeley K (2009) Minds Made for Sharing: Initiating Joint Attention Recruits Reward-related Neurocircuitry. Journal of Cognitive Neuroscience 0:1-14. 
> 
> Schippers MB, Roebroeck A, Renken R, Nanetti L, Keysers C. (2010). "Mapping the Information flow from one brain to another during gestural communication". Proc Natl Acad Sci U S A. 2010 May 18;107(20):9388-93.
> 
> Stephens, J. G., Silbert, J. L. & Hasson, U. (2010). Speaker–listener neural coupling underlies successful communication. PNAS, July 27.
> 
> Tognoli, E., J. Lagarde, et al. (2007). "The phi complex as a neuromarker of human social coordination." Proc Natl Acad Sci U S A 104(19): 8190-5.
> 
> 
> 
> 
> Carletta, J., Hill, R. L., Nicol, C., Taylor, T., de Ruiter, J. P., & Bard, E. G. (2010). Eye tracking for two-person tasks with manipulation of a virtual world. Behavior Research Methods, 42, 254-265. 
> Wilms M, Schilbach L, Pfeiffer U, Bente G, Fink GR, Vogeley K: (2010). It´s in your eyes. Using gaze-contingent stimuli to create truly interactive paradigms for social cognitive and affective neuroscience. Social Cognitive and Affective Neuroscience 5, 98-107
> 
> 
> 
> 
> 
> Kelso J.A.S, de Guzman G.C., Reveley C., Tognoli E. (2009) Virtual Partner Interaction (VPI): Exploring Novel Behaviors via Coordination Dynamics. PLoS ONE 4(6) e5749.
> 
> Keysers C, Kaas J, Gazzola V. (2010). "Somatosensation in Social Perception." Nature Reviews Neuroscience. 2010 Jun;11(6):417-28. 
> 
> Knoblich, G., Butterfill, S., & Sebanz, N. (2011). Psychological research on joint action: theory and data . In B. Ross (Ed.),The Psychology of Learning and Motivation, 54 (pp. 59-101), Burlington: Academic Press.
> 
> Kokal I, Keysers C. Granger causality mapping during joint actions reveals evidence for forward models that could overcome sensory-motor delays. PLoS One. 2010 Oct 21;5(10):e13507.
> 
> Marsh, K. L., Johnston, L., Richardson, M. J., & Schmidt, R. C. (2009). Hop off the mirror neuron bandwagon and join ours, it’s less crowded! European Journal of Social Psychology, 39, 1234-1235.
> 
> Oullier, O., G. C. de Guzman, et al. (2007). "Social coordination dynamics: Measuring human bonding." Social Neuroscience 99999(1): 1 – 15.
> 
> Perry, A., Stein, L., & Bentin, S. (2011). Motor and attentional mechanisms involved in social interaction: Evidence from mu and alpha EEG suppression. Neuroimage, 58, 895-904. DOI http://dx.doi.org/10.1016/j.neuroimage.2011.06.060
> 
> Richardson, M. J., K. L. Marsh, et al. (2007). "Rocking together: dynamics of intentional and unintentional interpersonal coordination." Hum Mov Sci (6): 867-91.
> 
> Richardson, M. J., Marsh, K. L., & Schmidt, R. C. (2010). Challenging the egocentric view of perceiving, acting, and knowing. In L. Feldman Barrett, B. Mesquita, & E. Smith (Eds), The mind in context (pp. 307-333). New York: Guilford Press.
> 
> Richardson, M. J., Marsh, K. L., Isenhower, R., Goodman, J., & Schmidt, R. C. (2007). Rocking together: Dynamics of intentional and unintentional interpersonal coordination. Human Movement Science, 26, 867-891.
> 
> Richardson, MJ., van der Wel, R.P.R.D., Knoblich, G., & Sebanz, N. (in press). Let the force be with us: Dyads exploit haptic coupling for coordination . Journal of Experimental Psychology: Human Perception and Performance.
> 
> 
> 
> 
> 
> On Tue, Jan 24, 2012 at 5:31 AM, muhammad naeem <naeem6500 at yahoo.com> wrote:
> Hi EEGlablist,
> 
> In an EEG paradigm concerning two-person social interaction I am trying a joint ICA approach (e.g: Calhoun and colleagues-NeuroImage 45 (2009) S163–S172 and computational Intelligence and Neuroscience doi:10.1155/2011/129365 ). A similar approach has been used in other studies (e.g Montague and colleagues- NeuroImage 16, 1159–1164 (2002)doi:10.1006/nimg.2002.1150). Essential difference between two is the arrangement of Data. In the first, virtual channels have been created (separate sphering process and PCA ) whereas in the second data of two subjects were concatenated giving lesser (half  ) IC's to investigate. I am wondering which approach is more appropriate and why? 
> 
> A subsequent question is regarding data reduction- PCA is usually used but as mentioned in the first references may not be suitable for the activities which are not time/phase-locked(as the case with my data). What are the other options?
> 
> Looking forward to your insight.
> 
> Best regards,
> 
> Naeem.
> 
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--------------------------------------------------------------------
Steven J. Luck, Ph.D.
Director, Center for Mind & Brain
Professor, Department of Psychology
University of California, Davis
Room 109
267 Cousteau Place
Davis, CA 95618
(530) 297-4424
E-Mail: sjluck at ucdavis.edu
Web: http://mindbrain.ucdavis.edu/people/sjluck
Calendar: http://www.google.com/calendar/embed?src=stevenjluck%40gmail.com&ctz=America/Los_Angeles
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