Kubovy Perception Lab
UVA Lab

Competition between the perception of pitch-homogeneous temporal groups of and pitch-varied temporal groups of 2



soaw 1
(soa within pairs)
soab 1
(soa between pairs)
soab/soawExample 2Possible Prob.3
300 msec150 msec0.50 p(b) ≈ 1
200 msec0.67 p(b) > 0.5
300 msec1.00 p(w) > 0.5
450 msec1.50 p(w) ≈ 1
600 msec2.00 p(w) ≈ 1
450 msec225 msec0.50 p(b) ≈ 1
300 msec0.67 p(b) > 0.5
450 msec1.00 p(w) > 0.5
675 msec1.50 p(w) ≈ 1
900 msec2.00 p(w) ≈ 1

 

1 In each sound sequence, a pair of high pitch tones and a pair of low pitch tones are presented alternately. The stimulus onset asynchorny (SOA) within each pair of two same pitch tones is called within SOA (SOAw). The SOA between the second tone in one pair of two same pitch tones and the first tone in the other pair is called between pair SOA (SOAb).

2 All examples decelerate to regular tempo

3 p(b) is the probability of grouping the tones into a set of two tones with different pitches (click on the left box in the figure).
p(w) is the probability of grouping the tones into a set of two same pitch tones (click on the right box in the figure).

 

See demo of Competition between the perception of temporal groups of 3 and temporal groups of 2