On interpreting responses to low contrast stimuli in terms of magnocellular activity - a few remarks.

摘要

Lalor and Foxe (2009) used a novel form of Visually Evoked Potentials (VESPA) to study responses to stimuli at different luminance contrasts. In particular, they identified certain responses which they suggest are consistent with activity in the magnocellular system. Lalor and Foxe (2009) raise questions themselves over the validity of their work, such as the use of linear analysis to isolate a part of the visual system that, as they note, is highly nonlinear. While we welcome the possibility of a new means to investigate magnocellular activity, further concerns exist that merit discussion.