Visual stimulation frequency dependent changes in bold transients
نویسندگان
چکیده
منابع مشابه
Reduced BOLD response to periodic visual stimulation.
The blood oxygenation level-dependent (BOLD) response to entrained neuronal firing in the human visual cortex and lateral geniculate nuclei was investigated. Periodic checkerboard flashes at a range of frequencies (4-20 Hz) were used to drive the visual cortex neurons into entrained oscillatory firing. This is compared to a checkerboard flashing aperiodically, with the same average number of fl...
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HUMANS AT 7T Laurentius Huber, Jozien Goense, Dimo Ivanov, Steffen N. Krieger, Robert Turner, and Harald E. Moeller NMR-Unit, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany, Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Tübingen, Germany, Neurophysics, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germa...
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Transcranial alternating current stimulation (tACS) has emerged as a promising tool for manipulating ongoing brain oscillations. While previous studies demonstrated frequency-specific effects of tACS on diverse cognitive functions, its effect on neural activity remains poorly understood. Here we asked how tACS modulates regional fMRI blood oxygenation level dependent (BOLD) signal as a function...
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Noninvasive cortical stimulation techniques, such as transcranial magnetic stimulation (TMS) and transcranial direct current stimulation (tDCS), have proved to be powerful tools for establishing causal relationships between brain regions and their functions. In the present study, we demonstrate that a new technique called transcranial alternating current stimulation (tACS) can interact with ong...
متن کاملCorrelation between BOLD-fMRI and EEG signal changes in response to visual stimulus frequency in humans.
The correlation between signals acquired using electroencephalography (EEG) and fMRI was investigated in humans during visual stimulation. Evoked potential EEG and BOLD fMRI data were acquired independently under similar conditions from eight subjects during stimulation by a checkerboard flashed at frequencies ranging from 2-12 Hz. The results indicate highly correlated changes in the strength ...
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ژورنال
عنوان ژورنال: Frontiers in Human Neuroscience
سال: 2011
ISSN: 1662-5161
DOI: 10.3389/conf.fnhum.2011.207.00081