Project ID
VIS

Expected experimentation period
Start date: 29/03/2018
End date: 29/03/2019

Experimental location
Montreal Neurological Institute, McGill University, Montreal, QC

Task Description
The task consisted of a same-different auditory melodic discrimination task. Participants were asked to detect whether the pitch of one of the tones had been changed in the second melody (S2; pitch change of two or three semitones). The change, when applied, preserved the melodic contour (the order of upward and downward pitch movement in a melody without regard to magnitude). The tones of the second melody were always reversed in time so that the final tone became the first. This transformation required a comparison between a sample and a transformed target. Therefore, participants had to manipulate auditory information in memory during the task. The changed tone in the reversed melodies could be that at any of the three possible positions.For each trial, participants listened binaurally to the first three-tone sequence over a duration of 750 ms (encoding, S1), followed by a silent retention period of 2000 ms and the second melodic sequence (retrieval, S2, 750-ms duration). As mentioned above, in the control condition, participants performed the auditory task without visual stimulation. During the rotating and random conditions, participants performed the same auditory task following 5-Hz visual stimulation with rotating or random Shepard’s objects (as in experiment 1), respectively. Visual stimulation lasted 4 s before the onset of the first auditory sequence.

Participant categories
23 non-musicians, 20 right-handed, 15 women; mean age, 25.5 ± 5.12 years, ranging from 19 to 36 years old; mean education, 17.45 ± 2.77 years.

Trigger channels
n/a

Events

1. ControlBox is not connected via USB
2. Mk
3. S 1
4. S 2
5. S 8
6. S 10
7. S 12
8. S 60
9. S100
10. S112
11. S113
12. S122
13. S123
14. S132
15. S133
16. S200
17. S212
18. S213
19. S222
20. S223
21. S232
22. S233

ResearchPaper
https://www.science.org/doi/10.1126/sciadv.abj9782

Contact Person
Philippe Albouy: [email protected]
Corentin Labelle: [email protected]