ArticleiScience2025
Eccentricity-dependent saccadic reaction time: The roles of foveal magnification and attentional orienting.
Article in iScience, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Proximal procrastination of saccades: "paradoxical" delays to larger objects explained by a simple payoff-time heuristic.iScience · 2026Article
- Presaccadic attentional shifts are not modulated by saccade amplitude.Scientific reports · 2025Article
- Rapid eye and hand responses in an interception task are differentially modulated by context-dependent predictability.Journal of vision · 2024Article
- Neuronal activity in posterior parietal cortex area LIP is not sufficient for saccadic eye movement production.Frontiers in integrative neuroscience · 2023Article
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Authors and funding
2 authors.
Funding
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Abstract
The primate visual brain is characterized by foveal magnification. Here, we show in macaque monkeys that foveal magnification affects the dynamics of saccade initiation. In a visually guided saccade task, saccadic reaction times (SRT) increased with target eccentricity. Notably, we effectively eliminated this increase by scaling the target size according to the foveal magnification factor in the superior colliculus. We then repeated the comparison between non-scaled and scaled targets while changing the task to a delayed, visually guided saccade task. In this task, the saccade was triggered by the foveal fixation offset rather than target onset, such that target onset long before the fixation offset was essentially irrelevant for SRT. In this task, we found that SRT increased with target eccentricity, with a similar rate for both non-scaled and scaled targets, consistent with an attentional scan from the fovea to the target, a recently hypothesized general mechanism of attention.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.