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The SUNY Open Access Repository (SOAR) is a centrally managed online digital repository that stores, indexes, and makes available scholarly and creative works of SUNY faculty, students, and staff across SUNY campuses. SOAR serves as an open access platform for those SUNY campuses that do not have their own open access repository environments. 

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  • Anchors Away, Alma: Using Alma to Run a Ship’s Library

    Bradley, Lauren; Grover, Noah (2024-09-11)
    SUNY Maritime is preparing the next generation of American professional mariners. The Stephen B. Luce Library manages both the on-campus library and the Ship’s Library on the college’s training ship. The old ship’s lack of technological infrastructure required the library to run a redundant, secondary open-source ILS. The delivery of the new TS Empire State 7 in September 2023 allowed for the expansion of Alma as the Ship’s Library’s primary ILS. This was a year-long project requiring new library configurations, migration of old bibliographic records to new workflows for the Ship’s Librarian, and on-the-fly troubleshooting after cybersecurity complications with the U.S. Federal Government. This presentation will focus on the implementation of Alma as the Ship’s Library ILS, an assessment of the production environment after a full Summer Sea Term, and planned revisions. Participants supporting Alma in traditional and non-traditional library settings are highly encouraged to attend.
  • Microsaccadic Efficacy and Contribution to Foveal and Peripheral Vision

    McCamy, M. B.; Otero-Millan, J.; Macknik, S. L.; Yang, Y.; Troncoso, X. G.; Baer, S. M.; Crook, S. M.; Martinez-Conde, S. (Society for Neuroscience, 2012-07-04)
    Our eyes move constantly, even when we try to fixate our gaze. Fixational eye movements prevent and restore visual loss during fixation, yet the relative impact of each type of fixational eye movement remains controversial. For over five decades, the debate has focused on microsaccades, the fastest and largest fixational eye movements. Some recent studies have concluded that microsaccades counteract visual fading during fixation. Other studies have disputed this idea, contending that microsaccades play no significant role in vision. The disagreement stems from the lack of methods to determine the precise effects of microsaccades on vision versus those of other eye movements, as well as a lack of evidence that microsaccades are relevant to foveal vision. Here we developed a novel generalized method to determine the precise quantified contribution and efficacy of human microsaccades to restoring visibility compared with other eye movements. Our results indicate that microsaccades are the greatest eye movement contributor to the restoration of both foveal and peripheral vision during fixation. Our method to calculate the efficacy and contribution of microsaccades to perception can determine the strength of connection between any two physiological and/or perceptual events, providing a novel and powerful estimate of causal influence; thus, we anticipate wide-ranging applications in neuroscience and beyond.
  • Microsaccades and Blinks Trigger Illusory Rotation in the “Rotating Snakes” Illusion

    Otero-Millan, Jorge; Macknik, Stephen L.; Martinez-Conde, Susana (Society for Neuroscience, 2012-04-25)
    Certain repetitive arrangements of luminance gradients elicit the perception of strong illusory motion. Among them, the "Rotating Snakes Illusion" has generated a large amount of interest in the visual neurosciences, as well as in the public. Prior evidence indicates that the Rotating Snakes illusion depends critically on eye movements, yet the specific eye movement types involved and their associated neural mechanisms remain controversial. According to recent reports, slow ocular drift--a nonsaccadic type of fixational eye movement--drives the illusion, whereas microsaccades produced during attempted fixation fail to do so. Here, we asked human subjects to indicate the presence or absence of rotation during the observation of the illusion while we simultaneously recorded their eye movements with high precision. We found a strong quantitative link between microsaccade and blink production and illusory rotation. These results suggest that transient oculomotor events such as microsaccades, saccades, and blinks, rather than continuous drift, act to trigger the illusory motion in the Rotating Snakes illusion.
  • Optimizing the temporal dynamics of light to human perception

    Rieiro, Hector; Martinez-Conde, Susana; Danielson, Andrew P.; Pardo-Vazquez, Jose L.; Srivastava, Nishit; Macknik, Stephen L. (Proceedings of the National Academy of Sciences, 2012-11-12)
    No previous research has tuned the temporal characteristics of light-emitting devices to enhance brightness perception in human vision, despite the potential for significant power savings. The role of stimulus duration on perceived contrast is unclear, due to contradiction between the models proposed by Bloch and by Broca and Sulzer over 100 years ago. We propose that the discrepancy is accounted for by the observer's "inherent expertise bias," a type of experimental bias in which the observer's life-long experience with interpreting the sensory world overcomes perceptual ambiguities and biases experimental outcomes. By controlling for this and all other known biases, we show that perceived contrast peaks at durations of 50-100 ms, and we conclude that the Broca-Sulzer effect best describes human temporal vision. We also show that the plateau in perceived brightness with stimulus duration, described by Bloch's law, is a previously uncharacterized type of temporal brightness constancy that, like classical constancy effects, serves to enhance object recognition across varied lighting conditions in natural vision-although this is a constancy effect that normalizes perception across temporal modulation conditions. A practical outcome of this study is that tuning light-emitting devices to match the temporal dynamics of the human visual system's temporal response function will result in significant power savings.
  • Simultaneous recordings of ocular microtremor and microsaccades with a piezoelectric sensor and a video-oculography system

    McCamy, Michael B.; Collins, Niamh; Otero-Millan, Jorge; Al-Kalbani, Mohammed; Macknik, Stephen L.; Coakley, Davis; Troncoso, Xoana G.; Boyle, Gerard; Narayanan, Vinodh; Wolf, Thomas R.; et al. (PeerJ, 2013-02-12)
    Our eyes are in continuous motion. Even when we attempt to fix our gaze, we produce so called "fixational eye movements", which include microsaccades, drift, and ocular microtremor (OMT). Microsaccades, the largest and fastest type of fixational eye movement, shift the retinal image from several dozen to several hundred photoreceptors and have equivalent physical characteristics to saccades, only on a smaller scale (Martinez-Conde, Otero-Millan & Macknik, 2013). OMT occurs simultaneously with drift and is the smallest of the fixational eye movements (∼1 photoreceptor width, >0.5 arcmin), with dominant frequencies ranging from 70 Hz to 103 Hz (Martinez-Conde, Macknik & Hubel, 2004). Due to OMT's small amplitude and high frequency, the most accurate and stringent way to record it is the piezoelectric transduction method. Thus, OMT studies are far rarer than those focusing on microsaccades or drift. Here we conducted simultaneous recordings of OMT and microsaccades with a piezoelectric device and a commercial infrared video tracking system. We set out to determine whether OMT could help to restore perceptually faded targets during attempted fixation, and we also wondered whether the piezoelectric sensor could affect the characteristics of microsaccades. Our results showed that microsaccades, but not OMT, counteracted perceptual fading. We moreover found that the piezoelectric sensor affected microsaccades in a complex way, and that the oculomotor system adjusted to the stress brought on by the sensor by adjusting the magnitudes of microsaccades.

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