Repetition suppression and effects of familiarity on blood oxygenation level dependent signal and gamma-band activity.
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Repetition suppression and effects of familiarity on blood oxygenation level dependent signal and gamma-band activity. / Friese, Uwe; Rahm, Benjamin; Hassler, Uwe; Kaiser, Jochen; Gruber, Thomas.
in: NEUROREPORT, Jahrgang 23, Nr. 13, 13, 2012, S. 757-761.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Repetition suppression and effects of familiarity on blood oxygenation level dependent signal and gamma-band activity.
AU - Friese, Uwe
AU - Rahm, Benjamin
AU - Hassler, Uwe
AU - Kaiser, Jochen
AU - Gruber, Thomas
PY - 2012
Y1 - 2012
N2 - We used an identical repetition priming paradigm in functional MRI (fMRI) and magnetoencephalography (MEG) to investigate brain networks modulated by stimulus repetition and familiarity. In particular, pictures of familiar or unfamiliar objects were presented sequentially, with stimulus repetitions occurring within few trials. The results of both studies indicated close agreement between the pattern found in fMRI-BOLD (blood oxygenation level dependent) responses and in source localizations of induced gamma-band activity derived from MEG. In both studies, the brain regions that were significantly associated with repetition suppression in response to familiar visual objects encompassed bilaterally the medial and lateral occipital cortex, inferior occipitotemporal regions including the left fusiform cortex, as well as parietal areas. Modulations by stimulus familiarity occurred mainly within this network. Overall, we found noticeable correspondences between the results of fMRI-BOLD signals and MEG gamma-band activity, suggesting that both methods can be used in analogous ways to study the neural basis of repetition priming and object recognition.
AB - We used an identical repetition priming paradigm in functional MRI (fMRI) and magnetoencephalography (MEG) to investigate brain networks modulated by stimulus repetition and familiarity. In particular, pictures of familiar or unfamiliar objects were presented sequentially, with stimulus repetitions occurring within few trials. The results of both studies indicated close agreement between the pattern found in fMRI-BOLD (blood oxygenation level dependent) responses and in source localizations of induced gamma-band activity derived from MEG. In both studies, the brain regions that were significantly associated with repetition suppression in response to familiar visual objects encompassed bilaterally the medial and lateral occipital cortex, inferior occipitotemporal regions including the left fusiform cortex, as well as parietal areas. Modulations by stimulus familiarity occurred mainly within this network. Overall, we found noticeable correspondences between the results of fMRI-BOLD signals and MEG gamma-band activity, suggesting that both methods can be used in analogous ways to study the neural basis of repetition priming and object recognition.
KW - Adult
KW - Humans
KW - Male
KW - Female
KW - Young Adult
KW - Photic Stimulation
KW - Magnetic Resonance Imaging
KW - Image Processing, Computer-Assisted
KW - Brain Mapping
KW - Magnetoencephalography
KW - Brain/physiology
KW - Pattern Recognition, Visual/physiology
KW - Recognition (Psychology)/physiology
KW - Oxygen/blood
KW - Adult
KW - Humans
KW - Male
KW - Female
KW - Young Adult
KW - Photic Stimulation
KW - Magnetic Resonance Imaging
KW - Image Processing, Computer-Assisted
KW - Brain Mapping
KW - Magnetoencephalography
KW - Brain/physiology
KW - Pattern Recognition, Visual/physiology
KW - Recognition (Psychology)/physiology
KW - Oxygen/blood
M3 - SCORING: Journal article
VL - 23
SP - 757
EP - 761
JO - NEUROREPORT
JF - NEUROREPORT
SN - 0959-4965
IS - 13
M1 - 13
ER -
