EEG gamma-band activity in rapid serial visual presentation
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EEG gamma-band activity in rapid serial visual presentation. / Kranczioch, Cornelia; Debener, Stefan; Herrmann, Christoph S; Engel, Andreas K.
In: EXP BRAIN RES, Vol. 169, No. 2, 01.02.2006, p. 246-54.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - EEG gamma-band activity in rapid serial visual presentation
AU - Kranczioch, Cornelia
AU - Debener, Stefan
AU - Herrmann, Christoph S
AU - Engel, Andreas K
PY - 2006/2/1
Y1 - 2006/2/1
N2 - Evidence is available that oscillatory activity in the gamma frequency range (>30 Hz) might be related to the attentional selection of target items. Rapid serial visual presentation (RSVP) paradigms are instrumental in addressing cognitive functions such as visual attention, and they are increasingly combined with the measurement of electrical brain activity. In the present study, gamma-band responses for target and standard stimuli were investigated in an RSVP oddball paradigm. In a first study, stimuli were presented at a frequency of 10 Hz, the stimulus sequence consisted of rare colored letters (targets) and frequent black letters (standards). In addition, stimulus size was varied across experimental blocks. Significant target modulations were observed for the P3 ERP and induced (i.e., not phase-locked) gamma-band responses. Besides this late activation, no further gamma-band responses were observed. A second study aimed at replicating these findings by employing a reduced stimulus presentation rate of 7.1 Hz. Again, besides the P3 ERP a late increase in induced gamma-band activity was observed. However, as compared to Study 1, this induced response was less pronounced. The induced gamma-band response observed in the present studies might reflect utilization of information derived from previous processing steps for behavioral performance or memory storage as suggested in the 'match-and-utilization-model' of gamma activity.
AB - Evidence is available that oscillatory activity in the gamma frequency range (>30 Hz) might be related to the attentional selection of target items. Rapid serial visual presentation (RSVP) paradigms are instrumental in addressing cognitive functions such as visual attention, and they are increasingly combined with the measurement of electrical brain activity. In the present study, gamma-band responses for target and standard stimuli were investigated in an RSVP oddball paradigm. In a first study, stimuli were presented at a frequency of 10 Hz, the stimulus sequence consisted of rare colored letters (targets) and frequent black letters (standards). In addition, stimulus size was varied across experimental blocks. Significant target modulations were observed for the P3 ERP and induced (i.e., not phase-locked) gamma-band responses. Besides this late activation, no further gamma-band responses were observed. A second study aimed at replicating these findings by employing a reduced stimulus presentation rate of 7.1 Hz. Again, besides the P3 ERP a late increase in induced gamma-band activity was observed. However, as compared to Study 1, this induced response was less pronounced. The induced gamma-band response observed in the present studies might reflect utilization of information derived from previous processing steps for behavioral performance or memory storage as suggested in the 'match-and-utilization-model' of gamma activity.
KW - Adult
KW - Analysis of Variance
KW - Brain
KW - Brain Mapping
KW - Color Perception
KW - Electroencephalography
KW - Event-Related Potentials, P300
KW - Evoked Potentials, Visual
KW - Female
KW - Humans
KW - Male
KW - Oscillometry
KW - Pattern Recognition, Visual
KW - Photic Stimulation
KW - Reaction Time
KW - Time Factors
U2 - 10.1007/s00221-005-0139-2
DO - 10.1007/s00221-005-0139-2
M3 - SCORING: Journal article
C2 - 16328311
VL - 169
SP - 246
EP - 254
JO - EXP BRAIN RES
JF - EXP BRAIN RES
SN - 0014-4819
IS - 2
ER -