ERP Correlates of Identity Negative Priming

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1 ERP Correlates of Identity Negative Priming Jörg Behrendt 1,3 Henning Gibbons 4 Hecke Schrobsdorff 1,2 Matthias Ihrke 1,3 J. Michael Herrmann 1,2 Marcus Hasselhorn 1,3 1 Bernstein Center for Computational Neuroscience Göttingen 2 University of Göttingen, Institute for Nonlinear Dynamics 3 Georg-Elias-Müller-Institute for Psychology, Göttingen Section for Educational and Developmental Psychology 4 Section for Biological Psychology Psychologie & Gehirn 2007, Dortmund; Symposium 11 Electrophysiological Correlates of Negative Priming

2 Outline 1 Introduction 2 Identity Negative Priming Paradigm 3 Behavioral Results 4 Correlates of Negative Priming 5 Correlates of Single Object Trials 6 Discussion

3 Introduction Introduction BCCN Göttingen Project C4 aging effects in selective attention joint project of modelers and experimentalists as main research tool EEG recordings to access internal mechanisms a modelers interest in ERPs will not be this talk s topic clarification of variance localization of mechanisms in time and space identification of processing steps single trial fitting

4 Identity Negative Priming Paradigm Identity Negative Priming Paradigm Prime Probe ms 500 ms reaction stimulus onset response stimulus interval time continuous identity priming paradigm with speech reaction green target, red distractor randomized response-stimulus interval ms

5 Identity Negative Priming Paradigm Stimulus Material *

6 Identity Negative Priming Paradigm Stimulus Material * equal saturation equal covered area balanced recognizablity similar complexity plosive [b] beginning experimentally optimized

7 Identity Negative Priming Paradigm Experimental Setup General identification task continuous presentation voice-key recording Conditions 8 priming conditions balanced in each block randomized RSI ms Recording 64 channels extended system reference: FCz Subjects 16 young subjects age = 26y, SD = 5y Design 30 test trials 20 baseline trials pre and post, single objects 20 blocks with 40+2 trials 840 trials

8 Identity Negative Priming Paradigm Standard Priming Conditions Prime CO Probe PP probe distractor present Control (CO): 16% Positive Priming (PP): 13% Negative Priming (): 12%

9 Identity Negative Priming Paradigm Single Object Priming Conditions Prime COSO Probe single probe target Control (COSO): 10% Positive Priming (PPSO): 10% PPSO Negative Priming (SO): 11% post-so trials SO excluded from analysis Control (SOCO): 16% Positive Priming (SOPP): 14% no Negative Priming

10 Behavioral Results Behavioral Results with probe distractor RT SD effect Cohen d [ms] [ms] [ms] effect CO PP without probe distractor RT SD effect Cohen d [ms] [ms] [ms] effect COSO PPSO SO Reaction Time [ms] control PP

11 Behavioral Results Behavioral Results with probe distractor RT SD effect Cohen d [ms] [ms] [ms] effect CO PP without probe distractor RT SD effect Cohen d [ms] [ms] [ms] effect COSO PPSO SO Reaction Time [ms] COSO PPSO SO

12 Behavioral Results Distractor Presence or Absence Reaction Time [ms] control PP COSO PPSO SO

13 Correlates of Negative Priming EEG Data Processing downsampling to 500Hz band pass filter: [0.2,20]Hz conditional segmentation [-100,1500]ms baseline correction for [-100,0]ms ocular correction (Gratton & Coles), VEOG channel: FPz reconstruction of FPz = (FP1+FP2)/2 low cutoff filter 0.5Hz baseline correction for [-100,0]ms artifact rejection, bounds [-100,100]µV) 10% trials excluded new reference: (TP10+TP9)/2, reconstruction of FCz average

14 Correlates of Negative Priming Statistical Analysis of the ERPs Hypothesis left-parietal predominance of P3 amplitude of primed trials compared to CO [Stahl,Gibbons in press] Procedure systematic analysis of components clustering of electrodes for analysis lateralization: {P1, P3, P5, P7} {P2, P4, P6. P8}

15 TP9 FT7 T7 TP7 F7 P7 FC5 C5 CP5 AF7 F5 P5 C3 PO7 F3 FC3 CP3 P3 Fpz Fp1 AF3 AFz O1 F1 FC1 C1 CP1 PO3 P1 Fz Cz CPz Pz POz Oz F2 Fp2 FC2 C2 CP2 P2 AF4 O2 F4 P4 PO4 FC4 C4 CP4 AF8 F6 P6 PO8 F8 FC6 C6 P8 FT8 T8 CP6 TP8 ERP Correlates of Identity Negative Priming Correlates of Negative Priming ERP Analysis PP CO 10µV 1s J. Behrendt, H. Gibbons, HS, M. Ihrke, J. M. Herrmann, M. Hasselhorn Event-Related Brain Potential Correlates of Identity Negative Priming, in preparation

16 TP9 FT7 T7 TP7 F7 P7 FC5 C5 CP5 AF7 F5 P5 C3 PO7 F3 FC3 CP3 P3 Fpz Fp1 AF3 AFz O1 F1 FC1 C1 CP1 PO3 P1 Fz Cz CPz Pz POz Oz F2 Fp2 FC2 C2 CP2 P2 AF4 O2 F4 P4 PO4 FC4 C4 CP4 AF8 F6 P6 PO8 F8 FC6 C6 P8 FT8 T8 CP6 TP8 ERP Correlates of Identity Negative Priming Correlates of Negative Priming ERP Analysis P5 PP CO PP CO P6 PP CO 10µV 1s J. Behrendt, H. Gibbons, HS, M. Ihrke, J. M. Herrmann, M. Hasselhorn Event-Related Brain Potential Correlates of Identity Negative Priming, in preparation

17 TP9 FT7 T7 TP7 F7 P7 FC5 C5 CP5 AF7 F5 P5 C3 PO7 F3 FC3 CP3 P3 Fpz Fp1 AF3 AFz O1 F1 FC1 C1 CP1 PO3 P1 Fz Cz CPz Pz POz Oz F2 Fp2 FC2 C2 CP2 P2 AF4 O2 F4 P4 PO4 FC4 C4 CP4 AF8 F6 P6 PO8 F8 FC6 C6 P8 FT8 T8 CP6 TP8 ERP Correlates of Identity Negative Priming Correlates of Negative Priming ERP Analysis FpZ PP CO PP CO 10µV 1s J. Behrendt, H. Gibbons, HS, M. Ihrke, J. M. Herrmann, M. Hasselhorn Event-Related Brain Potential Correlates of Identity Negative Priming, in preparation

18 Correlates of Negative Priming Statistical Analysis of the ERPs Procedure systematic analysis of components No effects found for P1 ( 102ms),N1 ( 174ms), P2 ( 230ms), N2 ( 270ms) posterior P3 ( 360ms) frontal positive slow wave ( 700ms) strong priming effect on PSW peak latency, therefore amplitude determination with individual time windows

19 Correlates of Negative Priming Statistical Analysis of the ERPs P3 Results latency: main effect priming (p <.05) no individual significant effects amplitude: main effect priming (p <.05) significant differences of, PP to CO (p <.05) lateralization amplitude differences for {P1, P3, P5, P7} significantly larger than control: (p <.001), PP (p <.05). no amplitude differences for {P2, P4, P6. P8}: (p <.22), PP (p <.11).

20 Correlates of Negative Priming Statistical Analysis of the ERPs PSW Results frontal PSW latency: main effect priming (p <.01) amplitude: differences between priming conditions (p <.001) PP (p <.001) PP CO (p <.05) CO (p <.001)

21 TP9 FT7 T7 TP7 F7 P7 FC5 C5 CP5 AF7 F5 P5 C3 PO7 F3 FC3 CP3 P3 Fpz Fp1 AF3 AFz O1 F1 FC1 C1 CP1 PO3 P1 Fz Cz CPz Pz POz Oz F2 Fp2 FC2 C2 CP2 P2 AF4 O2 F4 P4 PO4 FC4 C4 CP4 AF8 F6 P6 PO8 F8 FC6 C6 P8 FT8 T8 CP6 TP8 ERP Correlates of Identity Negative Priming Correlates of Single Object Trials Preliminary Analysis of SO Trials PP CO 10µV 1s

22 TP9 FT7 T7 TP7 F7 P7 FC5 C5 CP5 AF7 F5 P5 C3 PO7 F3 FC3 CP3 P3 Fpz Fp1 AF3 AFz O1 F1 FC1 C1 CP1 PO3 P1 Fz Cz CPz Pz POz Oz F2 Fp2 FC2 C2 CP2 P2 AF4 O2 F4 P4 PO4 FC4 C4 CP4 AF8 F6 P6 PO8 F8 FC6 C6 P8 FT8 T8 CP6 TP8 ERP Correlates of Identity Negative Priming Correlates of Single Object Trials Preliminary Analysis of SO Trials P5 SO PPSO COSO PP CO P6 SO PPSO COSO 10µV 1s

23 TP9 FT7 T7 TP7 F7 P7 FC5 C5 CP5 AF7 F5 P5 C3 PO7 F3 FC3 CP3 P3 Fpz Fp1 AF3 AFz O1 F1 FC1 C1 CP1 PO3 P1 Fz Cz CPz Pz POz Oz F2 Fp2 FC2 C2 CP2 P2 AF4 O2 F4 P4 PO4 FC4 C4 CP4 AF8 F6 P6 PO8 F8 FC6 C6 P8 FT8 T8 CP6 TP8 ERP Correlates of Identity Negative Priming Correlates of Single Object Trials Preliminary Analysis of SO Trials FpZ PP CO SO PPSO COSO 10µV 1s

24 TP9 FT7 T7 TP7 F7 P7 FC5 C5 CP5 AF7 F5 P5 C3 PO7 F3 FC3 CP3 P3 Fpz Fp1 AF3 AFz O1 F1 FC1 C1 CP1 PO3 P1 Fz Cz CPz Pz POz Oz F2 Fp2 FC2 C2 CP2 P2 AF4 O2 F4 P4 PO4 FC4 C4 CP4 AF8 F6 P6 PO8 F8 FC6 C6 P8 FT8 T8 CP6 TP8 ERP Correlates of Identity Negative Priming Correlates of Single Object Trials Comparison of Single Object Trials SO 10µV 1s

25 TP9 FT7 T7 TP7 F7 P7 FC5 C5 CP5 AF7 F5 P5 C3 PO7 F3 FC3 CP3 P3 Fpz Fp1 AF3 AFz O1 F1 FC1 C1 CP1 PO3 P1 Fz Cz CPz Pz POz Oz F2 Fp2 FC2 C2 CP2 P2 AF4 O2 F4 P4 PO4 FC4 C4 CP4 AF8 F6 P6 PO8 F8 FC6 C6 P8 FT8 T8 CP6 TP8 ERP Correlates of Identity Negative Priming Correlates of Single Object Trials Comparison of Single Object Trials P5 PP CO SO P6 PP CO SO PPSO COSO SO PPSO COSO 10µV 1s

26 TP9 FT7 T7 TP7 F7 P7 FC5 C5 CP5 AF7 F5 P5 C3 PO7 F3 FC3 CP3 P3 Fpz Fp1 AF3 AFz O1 F1 FC1 C1 CP1 PO3 P1 Fz Cz CPz Pz POz Oz F2 Fp2 FC2 C2 CP2 P2 AF4 O2 F4 P4 PO4 FC4 C4 CP4 AF8 F6 P6 PO8 F8 FC6 C6 P8 FT8 T8 CP6 TP8 ERP Correlates of Identity Negative Priming Correlates of Single Object Trials Comparison of Single Object Trials FpZ SO PP CO SO PPSO COSO 10µV 1s

27 Discussion Discussion of Experimental Results left hemispheric reduced P300 effort of stimulus evaluation affects P300 amplitude less effort for negative and positive priming conditions due to similarity of prime and probe display result challenges inhibition based models of favors episodic retrieval perspective frontal positive slow wave PSW amplitude reflects coordination complexity most coordination in trials, least in PP-trials episodic retrieval implies no amplitude effects CO inhibition model suggests no amplitude effects at all

28 Discussion Conclusion Take Home Message finding of correlates of identity lateralized smaller P300 for, PP in consistence with [Stahl, Gibbons in press] PSW reduction for, higher PSW for PP Outlook identifying sources of variance in the EEG-data wavelet analysis for single trials intensive data mining for identification of ERP differences e.g. classification of trials by a multilayer perceptron

29 Discussion Thanks to the Experts Henning Gibbons Torsten Wüstenberg Ralph Meier Miguel Valencia Ustárroz... to the BCCN People Theo Geisel Michael Herrmann Marcus Hasselhorn Tobias Niemann Jörg Behrendt Matthias Ihrke... and to You!

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