State-space estimation of the input stimulus function using the Kalman filter: a communication system model for fMRI experiments.

@article{Ward2006StatespaceEO,
  title={State-space estimation of the input stimulus function using the Kalman filter: a communication system model for fMRI experiments.},
  author={B. Douglas Ward and Yousef Mazaheri},
  journal={Journal of neuroscience methods},
  year={2006},
  volume={158 2},
  pages={271-8}
}
The blood oxygenation level-dependent (BOLD) signal measured in functional magnetic resonance imaging (fMRI) experiments in response to input stimuli is temporally delayed and distorted due to the blurring effect of the voxel hemodynamic impulse response function (IRF). Knowledge of the IRF, obtained during the same experiment, or as the result of a separate experiment, can be used to dynamically obtain an estimate of the input stimulus function. Reconstruction of the input stimulus function… CONTINUE READING