Presentation is loading. Please wait.

Presentation is loading. Please wait.

A direct comparison of Geodesic Sensor Net (128-channel) and conventional (30-channel) ERPs in tonal and phonetic oddball tasks Jürgen Kayser, Craig E.

Published byJeffrey Fowler Modified over 8 years ago

Similar presentations

Presentation on theme: "A direct comparison of Geodesic Sensor Net (128-channel) and conventional (30-channel) ERPs in tonal and phonetic oddball tasks Jürgen Kayser, Craig E."— Presentation transcript:

1 A direct comparison of Geodesic Sensor Net (128-channel) and conventional (30-channel) ERPs in tonal and phonetic oddball tasks Jürgen Kayser, Craig E. Tenke, Nilabja Bhattacharya, Barbara K. Stuart, Jeffrey Hudson, Gerard E. Bruder New York State Psychiatric Institute, Department of Biopsychology http://psychophysiology.cpmc.columbia.edu Society for Psychophysiological Research (SPR), 40th annual meeting, San Diego, CA, October 18-22, 2000 Symposium 14: Dense electrode array ERPs: Methodological developments, challenges and benefits

2 These task-specific ERP asymmetries interact with response hand in an unbalanced fashion Background TonalPhoneticTonal - Phonetic N2/P3 Amplitude pitch discrimination (right frontotemporal) phoneme discrimination (left parietotemporal) enhanced N2/P3 amplitude over the right lateral-temporal region for complex tones enhanced N2/P3 amplitude over the left parietal region for syllables ERPs of right-handed adults during auditory oddball tasks are characterized by stimulus-dependent N2/P3 asymmetries Kayser, Tenke, & Bruder (1998). Psychophysiology, 35(5), 576-590. Tenke, Kayser, Fong, Leite, Towey, & Bruder (1998). Brain Topography, 10(3), 201-210.

3 Complex Tones -square waves [444 Hz, 485 Hz] [444 Hz, 485 Hz] of major notes of major notes Syllables -consonant-vowels [/da/, /ka/] matched [/da/, /ka/] matched for discriminability for discriminability Oddball Tasks: Tonal and Phonetic Stimuli... B 20% targets 80% nontargets binaural... /da/ /ka/ binaural A B B B Left Press or Right Press or Silent Count Left Press or Right Press or Silent Count A /da/ /ka/ 960 trials total 12 blocks (80 trials) 12 blocks (80 trials) 32 targets/condition 32 targets/condition 128 nontargets/condtion

4 ElectroCap(30-channel) Geodesic Sensor Net (128-channel) Design Minimum 14 trials/condition ElectroCap24 GSN17 Gender Age (21 – 41 yrs) Handedness (Oldfield, 1971) Participants 27.8 ±6.5 10 female 14 male 79.7 ±22.6 N = 24 26.5 ±6.3 6 female 6 female 11 male 77.5 ±24.9 N = 17

5 Data Recording and Processing Geodesic Sensor Net ElectroCap Reference nose tip vertex #17 moved to nose tip Bipolar EOG EOG leadsfrom facial EEG leads Storage format NeuroScan EGI Initial artifacting clipped epoch/trialclipped epoch/trial/site Interactive blink correction (linear regression) Off-line filtering 20 Hz / 24 dB low pass Re-reference nose tip Artifacting ±100 µV 1.flag artifacts (100 µV threshold) 2.interactive editing of EEG epoch/trial/site (reject or replace after visual analysis of complete EEG montage) ERP averaging 100 µV step response External calibration 400 µV 20 Hz sine wave

6 Behavioral Data: Correct button presses Task p =.0002 Task

7 ERP Waveforms: Complex Tones ElectroCap ------- Nontargets ------- Targets

8 ElectroCap ------- Nontargets ------- Targets ERP Waveforms: CV Syllables

9 ERP Waveforms: Complex Tones Geodesic Sensor Net ------- Nontargets ------- Targets

10 ERP Waveforms: CV Syllables ------- Nontargets ------- Targets Geodesic Sensor Net

11 ERP Waveforms: Vertex CV Syllables Complex Tones Targets Nontargets Geodesic Sensor Net ------- Geodesic Sensor Net ElectroCap ------- ElectroCap

12 ERP Topographies: Surface Potentials () ERP Topographies: Surface Potentials (Targets) Time interval: 0 - 700 ms ElectroCap TonalPhonetic Geodesic Sensor Net TonalPhonetic

13 ElectroCap (30-channel) S890 P380 P300 N200 N110 Temporal PCA: Factor Loadings covariance matrix unscaled Varimax rotation GSN (30-channel) GSN (128-channel) P380 36.7% S890 26.1% P300 15.2% N200 6.1% N110 3.0% Explained Variance 87.1% _____ S890 P380 P300 N200 N110 ElectroCap (30-channel) GSN (30-channel)

14 N110 ERP Topographies: N110 () ERP Topographies: N110 (Targets) ElectroCap TonalPhonetic Geodesic Sensor Net TonalPhonetic

15 N200 ERP Topographies: N200 () ERP Topographies: N200 (Targets) ElectroCap Geodesic Sensor Net TonalPhonetic TonalPhonetic Syst x Task x Hemi p =.04 ECap Task x Hemi p =.0001 GSN Task x Hemi p =.03

16 P300 ERP Topographies: P300 () ERP Topographies: P300 (Targets) ElectroCap Geodesic Sensor Net TonalPhonetic TonalPhonetic System p =.006 Syst x Site p =.03

17 ERP Topographies: P380 () ERP Topographies: P380 (Targets) TonalPhonetic TonalPhonetic ElectroCap Geodesic Sensor Net P380 Syst x Site p =.02 Pz Syst x Task p =.0001

18 (P380+P300) – (N200) ERP Topographies: N2/P3 Amplitude () ERP Topographies: N2/P3 Amplitude (Targets) TonalPhonetic TonalPhonetic ElectroCap Geodesic Sensor Net System p =.03 Syst x Task p =.03 Syst x Task x Site p =.007 ECap Task x Hemi p =.002 GSN Task x Hemi p =.004 ECap Task x Hemi x Site p =.0008 GSN Task x Hemi x Site p =.0009

19 Left Press Right Press Geodesic Sensor Net Silent Count Tonal Phonetic ERP Topographies: N2/P3 Amplitude () ERP Topographies: N2/P3 Amplitude (Targets) (P380+P300) – (N200)

20 ERP Noise Estimates: Vertex referenced to nose tip System p =.0003 System p =.0006 Condition Syst x Cond p =.02 p <.0001 System p =.02 Condition p <.0001

21 Conclusions ERPs were remarkably similar across the two systems for corresponding recording sites using the same reference improved spatial resolution of the DEA montage increases confidence in the topographical findings advantages come at a significant cost requirements for maintaining conventional standards with DEA recordings component structure peak latencies topographies labor/time intensive data processing (an order of magnitude!) loss of subjects and/or data decrease in effect size reduced S/N ratio and late ERP amplitudes (e.g., P3) large number of trials and/or subjects need for new tools for data processing (including EOG correction, artifacting, replacing missing channels) sufficient manpower

22 ERP Topographies: Surface Potentials () ERP Topographies: Surface Potentials (Targets) Time interval: 0 - 700 ms Left Press Right Press Geodesic Sensor Net Silent Count Tonal Phonetic

23 ERP Topographies: Local Hjorth () ERP Topographies: Local Hjorth (Targets) Time interval: 0 - 695 ms Left Press Right Press Geodesic Sensor Net Silent Count Tonal Phonetic sink source

Download ppt "A direct comparison of Geodesic Sensor Net (128-channel) and conventional (30-channel) ERPs in tonal and phonetic oddball tasks Jürgen Kayser, Craig E."

Similar presentations

Early studies of the development of recognition memory in infants demonstrated a negative component over central leads (Nc) with greater amplitude in event-related.

Early studies of the development of recognition memory in infants demonstrated a negative component over central leads (Nc) with greater amplitude in event-related.
Helen Gaeta, David Friedman, & Gregory Hunt Cognitive Electrophysiology Laboratory New York State Psychiatric Institute Differential Effects of Stimulus.

Helen Gaeta, David Friedman, & Gregory Hunt Cognitive Electrophysiology Laboratory New York State Psychiatric Institute Differential Effects of Stimulus.
All slides © S. J. Luck, except as indicated in the notes sections of individual slides Slides may be used for nonprofit educational purposes if this copyright.

All slides © S. J. Luck, except as indicated in the notes sections of individual slides Slides may be used for nonprofit educational purposes if this copyright.
Event-related potentials (ERPs) have been used in past research to study the correlates and consequences of alcohol use (Porjesz et al., 2005). In particular,

Event-related potentials (ERPs) have been used in past research to study the correlates and consequences of alcohol use (Porjesz et al., 2005). In particular,
Visual speech speeds up the neural processing of auditory speech van Wassenhove, V., Grant, K. W., & Poeppel, D. (2005) Proceedings of the National Academy.

Visual speech speeds up the neural processing of auditory speech van Wassenhove, V., Grant, K. W., & Poeppel, D. (2005) Proceedings of the National Academy.
Electroencephalogram (EEG) and Event Related Potentials (ERP) Lucy J. Troup 28 th January 2008 CSU Symposium on Imaging.

Electroencephalogram (EEG) and Event Related Potentials (ERP) Lucy J. Troup 28 th January 2008 CSU Symposium on Imaging.
Early auditory novelty processing in humans: auditory brainstem and middle-latency responses Slabu L, Grimm S, Costa-Faidella J, Escera C.

Early auditory novelty processing in humans: auditory brainstem and middle-latency responses Slabu L, Grimm S, Costa-Faidella J, Escera C.
Atypical Visual Processing in Infant Siblings of Children with Autism Spectrum Disorders (ASD) Karen Dobkins Leslie Carver Joseph McCleery Funded by NAAR.

Atypical Visual Processing in Infant Siblings of Children with Autism Spectrum Disorders (ASD) Karen Dobkins Leslie Carver Joseph McCleery Funded by NAAR.
Contrasts & Inference - EEG & MEG Outi Tuomainen & Rimona Weil 17.5.2005 mfd.

Contrasts & Inference - EEG & MEG Outi Tuomainen & Rimona Weil mfd.
Recognition memory amongst individuals varying in the personality dimensions of Reward Seeking and Impulsivity Chase Kluemper 1, Chelsea Black 1, Yang.

Recognition memory amongst individuals varying in the personality dimensions of Reward Seeking and Impulsivity Chase Kluemper 1, Chelsea Black 1, Yang.
Pre-processing for EEG and MEG

Pre-processing for EEG and MEG
Artifact (artefact) reduction in EEG – and a bit of ERP basics CNC, 19 November 2014 Jakob Heinzle Translational Neuromodeling Unit.

Artifact (artefact) reduction in EEG – and a bit of ERP basics CNC, 19 November 2014 Jakob Heinzle Translational Neuromodeling Unit.
SPECIFICITY OF ERP TO CHANGE OF EMOTIONAL FACIAL EXPRESSION. Michael Wright Centre for Cognition and Neuroimaging, Brunel University, Uxbridge, UB8 3PH,

SPECIFICITY OF ERP TO CHANGE OF EMOTIONAL FACIAL EXPRESSION. Michael Wright Centre for Cognition and Neuroimaging, Brunel University, Uxbridge, UB8 3PH,
Links Between Action Perception and Action Production in 10-Week-Old Infants Vincent M. Reid 1 and Katharina Kaduk 1 Department of Psychology, Durham University,

Links Between Action Perception and Action Production in 10-Week-Old Infants Vincent M. Reid 1 and Katharina Kaduk 1 Department of Psychology, Durham University,
Physiology-based modeling and quantification of auditory evoked potentials Cliff Kerr Complex Systems Group School of Physics, University of Sydney.

Physiology-based modeling and quantification of auditory evoked potentials Cliff Kerr Complex Systems Group School of Physics, University of Sydney.
ERP DATA ACQUISITION & PREPROCESSING EEG Acquisition: 256 scalp sites; vertex recording reference (Geodesic Sensor Net)..01 Hz to 100 Hz analogue filter;

ERP DATA ACQUISITION & PREPROCESSING EEG Acquisition: 256 scalp sites; vertex recording reference (Geodesic Sensor Net)..01 Hz to 100 Hz analogue filter;
Change blindness and time to consciousness Professor: Liu Student: Ruby.

Change blindness and time to consciousness Professor: Liu Student: Ruby.
1. 2 Abstract - Two experimental paradigms : - EEG-based system that is able to detect high mental workload in drivers operating under real traffic condition.

1. 2 Abstract - Two experimental paradigms : - EEG-based system that is able to detect high mental workload in drivers operating under real traffic condition.
Participants: 57 children (6-8 years old, 35 boys) participated in experiments. All were schoolchildren in first class of elementary school in Novosibirsk,

Participants: 57 children (6-8 years old, 35 boys) participated in experiments. All were schoolchildren in first class of elementary school in Novosibirsk,
IntroductionMethods Participants  7 adults with severe motor impairment performed EEG recording sessions in their own homes.  9 adults with no motor.

IntroductionMethods Participants  7 adults with severe motor impairment performed EEG recording sessions in their own homes.  9 adults with no motor.

Similar presentations

Ads by Google