Closed-loop extended reality stimulus presentation and perception feedback using multi-channel physiological signals
In example embodiments, a method includes obtaining a first measurement of at least a first physiological parameter of a user from a time before presentation of an information item to the user. The information item may be, for example, a notification, an advertisement, or an emergency alert, among other possibilities. A second measurement of the first physiological parameter is obtained from a time after a beginning of the presentation of the information item to the user (e.g. during the presentation). Based at least on a comparison between the first and second measurements, a determination is made of whether the user has perceived the information item. The determination may also be based on a corruption coefficient indicating an amount by which an activity of the user is likely to interfere with the first physiological parameter.
1 . A method comprising:
using a microphone to detect an audible alert;
obtaining at least a first signal representing a difference between (i) a first value representing a first physiological parameter of a user during a time before the audible alert and (ii) a second value representing the first physiological parameter of the user during a time after the audible alert;
based at least on the first signal, determining whether the user perceived the audible alert.
2 . The method of claim 1 , further comprising providing a communication indicating whether the user perceived the audible alert.
3 . The method of claim 2 , wherein the communication indicating whether the user perceived the audible alert is provided to a vehicle.
4 . The method of claim 1 , further comprising providing a supplemental alert in response to a determination that the user did not perceive the audible alert.
5 . The method of claim 4 , wherein the supplemental alert is a light.
6 . The method of claim 1 , further comprising obtaining a second signal representing a difference between (i) a third value representing a second physiological parameter of the user during a time before the audible alert and (ii) a fourth value representing the second physiological parameter of the user during a time after the audible alert, wherein the determination is further based on the second signal.
7 . The method of claim 1 , wherein the first value is an average value of the first physiological parameter during the time before the audible alert, and the second value is an average value of the first physical parameter during the time after the audible alert.
8 . The method of claim 1 , wherein the first value is a maximum value of the first physiological parameter during the time before the audible alert, and the second value is a maximum value of the first physical parameter during the time after the audible alert.
9 . The method of claim 1 , wherein the first value is a frequency of the first physiological parameter during the time before the audible alert, and the second value is a frequency of the first physical parameter during the time after the audible alert.
10 . The method of claim 1 , wherein the first value is a variability of the first physiological parameter during the time before the audible alert, and the second value is a variability of the first physical parameter during the time after the audible alert.
11 . An apparatus comprising one or more processors configured to perform at least:
using a microphone to detect an audible alert;
obtaining at least a first signal representing a difference between (i) a first value representing a first physiological parameter of a user during a time before the audible alert and (ii) a second value representing the first physiological parameter of the user during a time after the audible alert;
based at least on the first signal, determining whether the user perceived the audible alert.
12 . The apparatus of claim 11 , further configured to provide a communication indicating whether the user perceived the audible alert.
13 . The apparatus of claim 12 , wherein the communication indicating whether the user perceived the audible alert is provided to a vehicle.
14 . The apparatus of claim 13 , wherein the vehicle is configured to provide a supplemental alert in response to a determination that the user did not perceive the audible alert.
15 . The apparatus of claim 14 , wherein the supplemental alert is a light.
16 . The apparatus of claim 11 , further configured to obtain a second signal representing a difference between (i) a third value representing a second physiological parameter of the user during a time before the audible alert and (ii) a fourth value representing the second physiological parameter of the user during a time after the audible alert, wherein the determination is further based on the second signal.
17 . The apparatus of claim 11 , wherein the first value is an average value of the first physiological parameter during the time before the audible alert, and the second value is an average value of the first physical parameter during the time after the audible alert.
18 . The apparatus of claim 11 , wherein the first value is a maximum value of the first physiological parameter during the time before the audible alert, and the second value is a maximum value of the first physical parameter during the time after the audible alert.
19 . The apparatus of claim 11 , wherein the first value is a frequency of the first physiological parameter during the time before the audible alert, and the second value is a frequency of the first physical parameter during the time after the audible alert.
20 . The apparatus of claim 11 , wherein the first value is a variability of the first physiological parameter during the time before the audible alert, and the second value is a variability of the first physical parameter during the time after the audible alert.