Table 1.

Distribution of stimulus pairs among the two conditions (speech vs. non-speech motor movements) presented at two different frame rates (normal vs. degraded). Half of the stimulus pairs in each cell was presented as a correct match (same motor movement shown twice in a row) and the other half was shown as an incorrect match (two different motor movements).

	Speech movements	Non-speech movements
Normal frame rate	20 correct matches	20 correct matches
(30 frames/sec)	20 incorrect matches	20 incorrect matches
Degraded frame rate	20 correct matches	20 correct matches
(3 frames/sec)	20 incorrect matches	20 incorrect matches