Microsaccades during high speed continuous visual search
| Autor: | Charles E. Davis, Maximilian Riesenhuber, Simon J. Thorpe, Jacob G. Martin |
|---|---|
| Přispěvatelé: | Centre de recherche cerveau et cognition (CERCO), Institut des sciences du cerveau de Toulouse. (ISCT), Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-CHU Toulouse [Toulouse]-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-CHU Toulouse [Toulouse]-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), The George Washington University (GW), Thorpe, Simon, Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
continuous visual search
Computer science Perceptual functions Stimulus (physiology) eye tracking 050105 experimental psychology 03 medical and health sciences [SCCO]Cognitive science 0302 clinical medicine fixations 0502 economics and business 0501 psychology and cognitive sciences Computer vision 050207 economics Visual hierarchy Visual search 050208 finance business.industry QM1-695 05 social sciences oculomotor [SCCO] Cognitive science Gaze saccades Sensory Systems microsaccades Ophthalmology Human anatomy Saccade Eye tracking Artificial intelligence Microsaccade Visual angle business 030217 neurology & neurosurgery Research Article |
| Zdroj: | Journal of Eye Movement Research; Bd. 13 Nr. 5 (2020): Special Thematic Issue, part 2 "Microsaccades: Empirical Research and Methodological Advances“ Journal of Eye Movement Research; Vol. 13 No. 5 (2020): Special Thematic Issue, part 2 "Microsaccades: Empirical Research and Methodological Advances“ Journal of Eye Movement Research Journal of Eye Movement Research, Vol 13, Iss 5 (2020) |
| ISSN: | 1995-8692 |
| Popis: | Here, we provide an analysis of the microsaccades that occurred during continuous visual search and targeting of small faces that we pasted either into cluttered background photos or into a simple gray background. Subjects continuously used their eyes to target singular 3-degree upright or inverted faces in changing scenes. As soon as the participant’s gaze reached the target face, a new face was displayed in a different and random location. Regardless of the experimental context (e.g. background scene, no background scene), or target eccentricity (from 4 to 20 degrees of visual angle), we found that the microsaccade rate dropped to near zero levels within only 12 milliseconds after stimulus onset. There were almost never any microsaccades after stimulus onset and before the first saccade to the face. One subject completed 118 consecutive trials without a single microsaccade. However, in about 20% of the trials, there was a single microsaccade that occurred almost immediately after the preceding saccade’s offset. These microsaccades were task oriented because their facial landmark targeting distributions matched those of saccades within both the upright and inverted face conditions. Our findings show that a single feedforward pass through the visual hierarchy for each stimulus is likely all that is needed to effectuate prolonged continuous visual search. In addition, we provide evidence that microsaccades can serve perceptual functions like correcting saccades or effectuating task-oriented goals during continuous visual search. |
| Databáze: | OpenAIRE |
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