Reliability and correlates of intra-individual variability in the oculomotor system
Even if all external circumstances are kept equal, the oculomotor system shows intra-individual variability over time, affecting measures such as microsaccade rate, blink rate, pupil size, and gaze position. Recently, some of these measures have been associated with ADHD on a between-subject level....
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| Language: | English |
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MDPI AG
2019-10-01
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| Series: | Journal of Eye Movement Research |
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| Online Access: | https://bop.unibe.ch/JEMR/article/view/4347 |
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| author | Marlou Nadine Perquin Aline Bompas |
| author_facet | Marlou Nadine Perquin Aline Bompas |
| author_sort | Marlou Nadine Perquin |
| collection | DOAJ |
| description | Even if all external circumstances are kept equal, the oculomotor system shows intra-individual variability over time, affecting measures such as microsaccade rate, blink rate, pupil size, and gaze position. Recently, some of these measures have been associated with ADHD on a between-subject level. However, it remains unclear to what extent these measures constitute stable individual traits. In the current study, we investigate the intra-individual reliability of these oculomotor features. Combining results over three experiments (>100 healthy participants), we found evidence for intra-individual reliability over different time points (repeatability) as well as over different conditions (generalization). Furthermore, we correlated oculomotor variability with self-assessed ADHD tendencies, mind wandering, and impulsivity, and found evidence against such correlations. As such, the oculomotor system shows reliable intra-individual reliability, but its use for distinguishing self-assessed individual differences in healthy subjects remains unclear. With our results, we highlight the importance of reliability and statistical power when studying between-subject differences. |
| format | Article |
| id | doaj-art-6c2e5caad4224f219934372db82092f4 |
| institution | Kabale University |
| issn | 1995-8692 |
| language | English |
| publishDate | 2019-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Eye Movement Research |
| spelling | doaj-art-6c2e5caad4224f219934372db82092f42025-08-20T03:33:45ZengMDPI AGJournal of Eye Movement Research1995-86922019-10-0112610.16910/jemr.12.6.11Reliability and correlates of intra-individual variability in the oculomotor systemMarlou Nadine Perquin0Aline Bompas1Cardiff UniversityCardiff UniversityEven if all external circumstances are kept equal, the oculomotor system shows intra-individual variability over time, affecting measures such as microsaccade rate, blink rate, pupil size, and gaze position. Recently, some of these measures have been associated with ADHD on a between-subject level. However, it remains unclear to what extent these measures constitute stable individual traits. In the current study, we investigate the intra-individual reliability of these oculomotor features. Combining results over three experiments (>100 healthy participants), we found evidence for intra-individual reliability over different time points (repeatability) as well as over different conditions (generalization). Furthermore, we correlated oculomotor variability with self-assessed ADHD tendencies, mind wandering, and impulsivity, and found evidence against such correlations. As such, the oculomotor system shows reliable intra-individual reliability, but its use for distinguishing self-assessed individual differences in healthy subjects remains unclear. With our results, we highlight the importance of reliability and statistical power when studying between-subject differences.https://bop.unibe.ch/JEMR/article/view/4347eye movementeye trackingmicrosaccadesgazeattentionreliability |
| spellingShingle | Marlou Nadine Perquin Aline Bompas Reliability and correlates of intra-individual variability in the oculomotor system Journal of Eye Movement Research eye movement eye tracking microsaccades gaze attention reliability |
| title | Reliability and correlates of intra-individual variability in the oculomotor system |
| title_full | Reliability and correlates of intra-individual variability in the oculomotor system |
| title_fullStr | Reliability and correlates of intra-individual variability in the oculomotor system |
| title_full_unstemmed | Reliability and correlates of intra-individual variability in the oculomotor system |
| title_short | Reliability and correlates of intra-individual variability in the oculomotor system |
| title_sort | reliability and correlates of intra individual variability in the oculomotor system |
| topic | eye movement eye tracking microsaccades gaze attention reliability |
| url | https://bop.unibe.ch/JEMR/article/view/4347 |
| work_keys_str_mv | AT marlounadineperquin reliabilityandcorrelatesofintraindividualvariabilityintheoculomotorsystem AT alinebompas reliabilityandcorrelatesofintraindividualvariabilityintheoculomotorsystem |