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Speed perception during acceleration and deceleration
 

Summary: Speed perception during acceleration
and deceleration
Systems Neurobiology Laboratories,
The Salk Institute for Biological Studies,
La Jolla, CA, USAAnja Schlack
Center for Molecular and Behavioral Neuroscience,
Rutgers University, Newark, NJ, USABart Krekelberg
Systems Neurobiology Laboratories,
The Salk Institute for Biological Studies,
La Jolla, CA, USAThomas D. Albright
We have recently shown that stimulus acceleration affects subsequent preferred speed and tuning widths of macaque area
MT neurons (A. Schlack, B. Krekelberg, & T. D. Albright, 2007). Given the close link between area MT and speed
perception, this predicts that speed perception should depend on the acceleration context. Here, we show that this is indeed
the case for both speed discrimination and speed perception. Specifically, speed discrimination thresholds improve in an
acceleration context but absolute speeds are more underestimated than in a deceleration context. In line with our
physiological data, these changes can be understood in terms of speed-dependent adaptation mechanisms in MT and do
not require an explicit acceleration dependence of speed perception.
Keywords: speed perception, acceleration, deceleration, adaptation
Citation: Schlack, A., Krekelberg, B., & Albright, T. D. (2008). Speed perception during acceleration and deceleration.
Journal of Vision, 8(8):9, 111, http://journalofvision.org/8/8/9/, doi:10.1167/8.8.9.

  

Source: Albright, Tom - Vision Center Laboratory, Salk Institute for Biological Studies

 

Collections: Biology and Medicine