# Using Pupil Diameter to Measure Cognitive Load

arXiv: https://arxiv.org/abs/1812.07653 · HTML: https://mlsanity.com/paper/1812.07653/

## Key facts

- Cited by 1 papers in the map (data through 14 Oct 2026).
- First posted on arXiv 29 Nov 2018.

## Built on by (most cited first, 1 of 1)

- [AI-HRI Brings New Dimensions to Human-Aware Design for Human-Aware AI](https://mlsanity.com/paper/2210.11832/) (2022)

## Abstract (arXiv)

In this paper, we will present a method for measuring cognitive load and online real-time feedback using the Tobii Pro 2 eye-tracking glasses. The system is envisaged to be capable of estimating high cognitive load states and situations, and adjust human-machine interfaces to the user's needs. The system is using well-known metrics such as average pupillary size over time. Our system can provide cognitive load feedback at 17-18 Hz. We will elaborate on our results of a HRI study using this tool to show it's functionality.