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ERP Correlates of Identity Negative Priming

ERP Correlates of Identity Negative Priming

Jrg Behrendt1,3 Henning Gibbons4 Hecke Schrobsdorff1,2

Matthias Ihrke1,3 J. Michael Herrmann1,2 Marcus Hasselhorn1,3

1 Bernstein Center for Computational Neuroscience Gttingen2 University of Gttingen, Institute for Nonlinear Dynamics

3 Georg-Elias-Mller-Institute for Psychology, GttingenSection for Educational and Developmental Psychology

4 Section for Biological Psychology

Psychologie & Gehirn 2007, Dortmund; Symposium 11Electrophysiological Correlates of Negative Priming

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ERP Correlates of Identity Negative Priming

Outline

1 Introduction

2 Identity Negative Priming Paradigm

3 Behavioral Results

4 Correlates of Negative Priming

5 Correlates of Single Object Trials

6 Discussion

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ERP Correlates of Identity Negative Priming

Introduction

Introduction

BCCN Gttingen Project C4

aging effects in selective attention

joint project of modelers and experimentalists

NP as main research tool

EEG recordings to access internal mechanisms

a modelers interest in ERPs...... will not be this talks topic

clarification of variance

localization of mechanisms in time and space

identification of processing steps

single trial fitting

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ERP Correlates of Identity Negative Priming

Identity Negative Priming Paradigm

Identity Negative Priming Paradigm

time

Prime Probe

reactionresponse stimulus interval

01500 ms 500 ms

stimulus onset

continuous identity priming paradigm with speech reaction

green target, red distractor

randomized response-stimulus interval 500-2000 ms

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ERP Correlates of Identity Negative Priming

Identity Negative Priming Paradigm

Stimulus Material

*

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ERP Correlates of Identity Negative Priming

Identity Negative Priming Paradigm

Stimulus Material

*

equalsaturation

equalcovered area

balancedrecognizablity

similarcomplexity

plosive [b]beginning

experimentallyoptimized

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ERP Correlates of Identity Negative Priming

Identity Negative Priming Paradigm

Experimental SetupGeneral

identification task

continuous presentation

voice-key recording

Conditions8 priming conditions

balanced in each block

randomized RSI 5002000 ms

Recording

64 channels

extended 10-20 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

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ERP Correlates of Identity Negative Priming

Identity Negative Priming Paradigm

Standard Priming Conditions

NP

Prime Probe

PP

CO

probe distractor present

Control (CO): 16%

Positive Priming (PP): 13%

Negative Priming (NP): 12%

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ERP Correlates of Identity Negative Priming

Identity Negative Priming Paradigm

Single Object Priming Conditions

NPSO

Prime Probe

PPSO

COSO

single probe target

Control (COSO): 10%

Positive Priming (PPSO): 10%

Negative Priming (NPSO):11%

post-SO trials

excluded from analysis

Control (SOCO): 16%

Positive Priming (SOPP): 14%

no Negative Priming

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ERP Correlates of Identity Negative Priming

Behavioral Results

Behavioral Results

with probe distractor

RT SD effect Cohen d[ms] [ms] [ms] effect

CO 779 196 PP 641 136 138 0.967NP 808 210 -29 0.149

without probe distractor

RT SD effect Cohen d[ms] [ms] [ms] effect

COSO 696 184 PPSO 620 148 76 0.533NPSO 715 194 -19 0.092

control PP NP

0200

400

600

800

React

ion T

ime [m

s]

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ERP Correlates of Identity Negative Priming

Behavioral Results

Behavioral Results

with probe distractor

RT SD effect Cohen d[ms] [ms] [ms] effect

CO 779 196 PP 641 136 138 0.967NP 808 210 -29 0.149

without probe distractor

RT SD effect Cohen d[ms] [ms] [ms] effect

COSO 696 184 PPSO 620 148 76 0.533NPSO 715 194 -19 0.092

COSO PPSO NPSO

0200

400

600

800

React

ion T

ime [m

s]

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ERP Correlates of Identity Negative Priming

Behavioral Results

Distractor Presence or Absence

control PP NP

02

00

40

06

00

80

0

Re

act

ion

Tim

e [

ms]

COSO PPSO NPSO

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ERP Correlates of Identity Negative Priming

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]V) 10% trials excluded

new reference: (TP10+TP9)/2, reconstruction of FCz

average

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ERP Correlates of Identity Negative Priming

Correlates of Negative Priming

Statistical Analysis of the ERPs

Hypothesis

left-parietal predominance of P3 amplitude of primed trialscompared 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}

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ERP Correlates of Identity Negative Priming

Correlates of Negative Priming

ERP Analysis

NPPPCO

1s

10

V

Fp1 Fp2

F3 F4

C3 C4

P3 P4

O1 O2

F7 F8

T7 T8

P7 P8

Fz

Cz

Pz

Oz

FC1 FC2

CP1 CP2

FC5 FC6

CP5 CP6

TP9

F1 F2

C1 C2

P1 P2

AF3 AF4

FC3 FC4

CP3 CP4

PO3 PO4

F5 F6

C5 C6

P5 P6

AF7 AF8

FT7 FT8

TP7 TP8

PO7 PO8

Fpz

AFz

CPz

POz

J. Behrendt, H. Gibbons, HS, M. Ihrke, J. M. Herrmann, M. HasselhornEvent-Related Brain Potential Correlates of Identity Negative Priming,in preparation

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ERP Correlates of Identity Negative Priming

Correlates of Negative Priming

ERP Analysis

NPPPCO

1s

10

V

Fp1 Fp2

F3 F4

C3 C4

P3 P4

O1 O2

F7 F8

T7 T8

P7 P8

Fz

Cz

Pz

Oz

FC1 FC2

CP1 CP2

FC5 FC6

CP5 CP6

TP9

F1 F2

C1 C2

P1 P2

AF3 AF4

FC3 FC4

CP3 CP4

PO3 PO4

F5 F6

C5 C6

P5 P6

AF7 AF8

FT7 FT8

TP7 TP8

PO7 PO8

Fpz

AFz

CPz

POz

J. Behrendt, H. Gibbons, HS, M. Ihrke, J. M. Herrmann, M. HasselhornEvent-Related Brain Potential Correlates of Identity Negative Priming,in preparation

P5 NPPPCO

P6 NPPPCO

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ERP Correlates of Identity Negative Priming

Correlates of Negative Priming

ERP Analysis

NPPPCO

1s

10

V

Fp1 Fp2

F3 F4

C3 C4

P3 P4

O1 O2

F7 F8

T7 T8

P7 P8

Fz

Cz

Pz

Oz

FC1 FC2

CP1 CP2

FC5 FC6

CP5 CP6

TP9

F1 F2

C1 C2

P1 P2

AF3 AF4

FC3 FC4

CP3 CP4

PO3 PO4

F5 F6

C5 C6

P5 P6

AF7 AF8

FT7 FT8

TP7 TP8

PO7 PO8

Fpz

AFz

CPz

POz

J. Behrendt, H. Gibbons, HS, M. Ihrke, J. M. Herrmann, M. HasselhornEvent-Related Brain Potential Correlates of Identity Negative Priming,in preparation

FpZ NPPPCO

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ERP Correlates of Identity Negative Priming

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, thereforeamplitude determination with individual time windows

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ERP Correlates of Identity Negative Priming

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 NP, PP to CO (p < .05)

lateralization

amplitude differences for {P1, P3, P5, P7} significantlylarger than control: NP (p < .001), PP (p < .05).

no amplitude differences for {P2, P4, P6. P8}:NP (p < .22), PP (p < .11).

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ERP Correlates of Identity Negative Priming

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 NP (p < .001)PP CO (p < .05)NP CO (p < .001)

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ERP Correlates