We're just using loudspeakers for auditory stimulus, though we have the
recording requipment somewhat masked/muffled and far away from the
subject. Why do specifically need headphones (not a criticism, just
I haven't tested it empirically, but I would worry that headphones might
provide enough of a stray signal to bollux close electrodes. Any data?
-Peter "click, click, click" Marvit
: Peter Marvit <marvit at psych.upenn.edu>, Psychology Dept, Univ. of Penn :
: 3815 Walnut St., Philadelphia, PA 19104 w:215/898-6274 h:215/387-6433 :