Speed-dependent responses in V5: A replication study.

  title={Speed-dependent responses in V5: A replication study.},
  author={Divya Chawla and Christian B{\"u}chel and Robin J. Edwards and Alastair Howseman and Oliver Josephs and John Ashburner and Karl J. Friston},
  volume={9 5},
In a previous paper, we used fMRI to examine motion-sensitive responses in human area V5 as a function of stimulus speed. As predicted by electrophysiological findings, we observed optimal responses at intermediate speeds of around 7 to 30 degrees /s. These results revealed a nonlinear (inverted "U") dependency on speed that was also evident in V3a. In this paper we repeated the experiment using an improved stimulus and a larger range of speeds. We replicated our previous findings and extended… CONTINUE READING

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