Ultrasession in opensesame

The recommended way to acquire ultrasound data in the Phonology Lab is via an Opensesame experiment. You can use Opensesame to display a series of prompts to a subject and run and control the acquisition utilities in inline scripts. A simple experiment proceeds like this:

• variables related to data acquisition are set

• the ultrasound acquisition system is initialized

• the experiment loops over a list of stimuli, which are used to prompt the subject

 * a preparatory prompt is shown to the subject

 * ultrasession.py is started and delays until the ultrasound system confirms that it is imaging

 * a speaking prompt is shown to the subject. This prompt can be shown for a defined duration, or it can be displayed until the subject presses a key.

 * ultrasession.py is sent a signal to stop acquisition