External stimuli and tasks often elicit negative BOLD responses in various brain regions, and growing experimental evidence supports that these phenomena are functionally meaningful. In this work, the high sensitivity available at 7T was explored to map and characterize both positive (PBRs) and negative BOLD responses (NBRs) to visual checkerboard stimulation, occurring in various brain regions within and beyond the visual cortex. Recently-proposed accelerated fMRI techniques were employed for data acquisition, and procedures for exclusion of large draining vein contributions, together with ICA-assisted denoising, were included in the analysis to improve response estimation. Besides the visual cortex, significant PBRs were found in the late...
AbstractUnambiguous interpretation of changes in the BOLD signal is challenging because of the compl...
Unlike the positive blood oxygenation level-dependent (BOLD) response (PBR), commonly taken as an in...
Decreases in stimulus-dependent blood oxygenation level dependent (BOLD) signal and their underlying...
External stimuli and tasks often elicit negative BOLD responses in various brain regions, and growin...
External stimuli and tasks often elicit negative BOLD responses in various brain regions, and growin...
Most fMRI studies are based on the detection of a positive BOLD response (PBR). A few previous human...
Introduction Previous studies have shown that besides the commonly observed positive BOLD response (...
AbstractMost fMRI studies are based on the detection of a positive BOLD response (PBR). Here, we dem...
In functional magnetic resonance imaging (fMRI), the relationship between positive BOLD responses (P...
AbstractIn functional magnetic resonance imaging (fMRI), the relationship between positive BOLD resp...
Positive blood oxygenation level-dependent (BOLD) responses (PBR), as measured by functional Magneti...
In functional magnetic resonance imaging (fMRI), the relationship between positive BOLD responses (P...
AbstractMany fMRI experiments show regions of cortex that seem to respond in antiphase with the prim...
Unambiguous interpretation of changes in the BOLD signal is challenging because of the complex neuro...
Sustained positive BOLD (blood oxygen level-dependent) activity is employed extensively in functiona...
AbstractUnambiguous interpretation of changes in the BOLD signal is challenging because of the compl...
Unlike the positive blood oxygenation level-dependent (BOLD) response (PBR), commonly taken as an in...
Decreases in stimulus-dependent blood oxygenation level dependent (BOLD) signal and their underlying...
External stimuli and tasks often elicit negative BOLD responses in various brain regions, and growin...
External stimuli and tasks often elicit negative BOLD responses in various brain regions, and growin...
Most fMRI studies are based on the detection of a positive BOLD response (PBR). A few previous human...
Introduction Previous studies have shown that besides the commonly observed positive BOLD response (...
AbstractMost fMRI studies are based on the detection of a positive BOLD response (PBR). Here, we dem...
In functional magnetic resonance imaging (fMRI), the relationship between positive BOLD responses (P...
AbstractIn functional magnetic resonance imaging (fMRI), the relationship between positive BOLD resp...
Positive blood oxygenation level-dependent (BOLD) responses (PBR), as measured by functional Magneti...
In functional magnetic resonance imaging (fMRI), the relationship between positive BOLD responses (P...
AbstractMany fMRI experiments show regions of cortex that seem to respond in antiphase with the prim...
Unambiguous interpretation of changes in the BOLD signal is challenging because of the complex neuro...
Sustained positive BOLD (blood oxygen level-dependent) activity is employed extensively in functiona...
AbstractUnambiguous interpretation of changes in the BOLD signal is challenging because of the compl...
Unlike the positive blood oxygenation level-dependent (BOLD) response (PBR), commonly taken as an in...
Decreases in stimulus-dependent blood oxygenation level dependent (BOLD) signal and their underlying...