Blood Oxygenation Level Dependent (BOLD) Signal Response to Stimulus Duration 
of 1 ms is Measurable in Human Subjects

Yesilyurt, B; Ugurbil, K; Uludag, K

doi:10.1007/s10334-006-0043-1

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Blood Oxygenation Level Dependent (BOLD) Signal Response to Stimulus Duration of 1 ms is Measurable in Human Subjects

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Yesilyurt, B
Former Department MRZ, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Uludag, K
Former Department MRZ, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Citation

Yesilyurt, B., Ugurbil, K., & Uludag, K. (2006). Blood Oxygenation Level Dependent (BOLD) Signal Response to Stimulus Duration of 1 ms is Measurable in Human Subjects. Poster presented at 23rd Annual Scientific Meeting of the ESMRMB 2006, Warsaw, Poland.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-D063-A

Abstract

In a previous study, we have shown that in human subjects it is possible to detect blood oxygenation level dependent (BOLD) signal changes evoked by a visual stimulus presented only for 5 ms. Moreover, we observed that at this ultrashort stimulus duration a) the response is highly non-linear compared to 50ms, 250ms and 1s stimulus b) the extrapolated intercept at 0ms stimulus duration was not zero suggesting that below a specific stimulus duration the hemodynamic response remains constant