Saccades to remembered target locations: an analysis of systematic and variable errors
Abstract
We studied the effects of varying delay interval on the accuracy and velocity of saccades to the remembered locations of visual targets. Remembered saccades were less accurate than control saccades. Both systematic and variable errors contributed to the loss of accuracy. Systematic errors were similar in size for delay intervals ranging from 400 msec to 5.6 sec, but variable errors increased monotonically as delay intervals were lengthened. Compared to control saccades, remembered saccades were slower and the peak velocities were more variable. However, neither peak velocity nor variability in peak velocity was related to the duration of the delay interval. Our findings indicate that a memory-related process is not the major source of the systematic errors observed on memory trials.
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In memory-guided saccade tasks, variability of saccade endpoints increases with delay duration.
“In memory-guided saccade tasks, variability of saccade endpoints increases with delay duration (Funahashi et al., 1989;White et al. 1994;Ploner et al. 1998).”
From Linking microcircuit dysfunction to cognitive impairment: Effects of disinhibition associated with schizophrenia in a cortical working memory model (2014) · cites this paper as White et al. 1994
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- Authors
- White, J. M., Sparks, D. L., & Stanford, T. R.
- Affiliations
- University of Houston (US)
- University of Pennsylvania (US)
- Venue
- Vision Research
- Publisher
- Elsevier BV
- Published
- 1994-01
- Volume
- 34
- Issue
- 1
- Pages
- 79-92
- ISSN
- 0042-6989 (ISSN-L)
- OpenAlex
- W2085174376
- Cited by
- 227
- References
- 33
- Citations by year
- 2026: 2 · 2025: 6 · 2024: 3 · 2023: 2 · 2022: 7 · 2021: 6 · 2020: 2 · 2019: 5 · 2018: 6 · 2017: 7 · 2016: 5 · 2015: 6 · 2014: 4 · 2013: 9 · 2012: 8
- FWCI
- 3.86
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Vision Research (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Institutes of Health (5f32ey006320-03)
- National Eye Institute (F32-EY-06320, EY01189)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
- Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
- Keywords
- saccades, retention interval, saccade accuracy, saccade velocity, systematic errors, variable error, eye movements
- MeSH terms
- Animals, Fixation, Ocular, Macaca mulatta, Memory, Saccades, Time Factors
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