Mini-Symposium on “What the eyes can tell us – pupillometry and eye-tracking research”
Eye-tracking based analyses of gaze patterns and pupil dilation are applied in various fields of research in order to provide insight into mental activity and information processing. We invite to an afternoon of selected lectures presenting some of the various areas of application and advanced methods of analysis.
All talks are open to anyone and attendance does not require registration.
13:00-14:00: Bruno Laeng, Universitetet i Oslo
'The size of the eye pupil and mental effort'
Summary : About 50 years ago Daniel Kahneman proposed that the eye pupil is a window into the intensive aspect of attention and cognitive processing, or in his words into 'mental effort'. After half a century, is this account still useful?
14:00-15:00: Matthias Mittner, Universitetet i Tromsø
'Estimating tonic and phasic pupillary signals'
Summary: The dynamic dilation of the human pupil, the pupillometric signal, is correlated with activity in the locus coeruleus norepinephrine system (LC-NE). This system can impact neural connectivity across cortex by means of manipulating the gain of neurons. The effect of NE on neural populations is determined by both tonic and phasic activity patterns in the LC. Hence, extracting tonic and phasic pupillometric signals is important when using pupil dilation as a proxy for LC-NE activity. Disentangling these components from the pupil-dilation time-series is not trivial as phasic responses can build up to mimic tonic fluctuations, especially in fast-paced experimental designs. I present a novel algorithm that has been designed to separate those two components and that allows trial-by-trial estimates of their value.
15:00-16:00: Bjørn Lundquist, Universitetet i Tromsø
'Eye tracking in linguistics: shared linguistic representations and strict language separation in multi-lingual/multi-lectal speakers'
Summary: Eye tracking is an increasingly popular research method within linguistics, both for studying language processing while reading, but also for studying the processing of spoken language input using the Visual World Paradigm (VWP). In this talk I will present two recent VWP studies from our lab that target language processing and linguistic representations in multi-lingual/multi-lectal speakers. I will focus on the choice of method: why is eye tracking, and especially the Visual World Paradigm, a better method than other more established methods (judgements, corpora, elicited production etc.) in the study of linguistic representations and language processing in multilingual speakers?
16:00-17:00: General discussion