Pupil reactivity to brief sounds.

This is a set of experimental code for auditory-evoked PDR measurement which includes the presentation of thirty 500 ms harmonic tones (f0=200 Hz; 30 harmonics) with an inter-sound interval randomised between 6 and 7 seconds. Participants listen passively to the sounds while pupil responses are recorded. The screen display remained static (identical to that in the main experiment) and participants maintained fixation on a centrally presented black cross. This session normally lasts 4 minutes (including calibration).

This session also starts with a 10-second-long resting state recording. It is better to lengthen this part to 15~30 second.

The eyetracker used here is Eyelink 1000 Desktop Mount, SR Research Ltd.

See more details in Zhao, S., Bury, G., Milne, A., and Chait, M. (2019). Pupillometry as an objective measure of sustained attention in young and older listeners [Preprint]. BioRxiv 579540. Available at: https://www.biorxiv.org/content/10.1101/579540v1 (Accessed: 16 March 2019).

Copyright (c) 2019, Sijia Zhao. All rights reserved. Contact: [email protected]