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Full-Text Articles in Life Sciences
The Comparative Neuroethology Of Distributed Visual Systems: Visual Neuroanatomy And Visually-Mediated Behaviors Of The Chiton Acanthopleura Granulata And The Bay Scallop Argopecten Irradians, Daniel Ritter Chappell
The Comparative Neuroethology Of Distributed Visual Systems: Visual Neuroanatomy And Visually-Mediated Behaviors Of The Chiton Acanthopleura Granulata And The Bay Scallop Argopecten Irradians, Daniel Ritter Chappell
Theses and Dissertations
Vision is usually thought to be inextricably linked to cephalization; however, certain species of invertebrates deviate from this canonical association by having noncephalized visual systems that are composed of numerous photoreceptive organs distributed across their body paired with centralized, decentralized, or distributed neural architectures. In contrast to cephalized visual systems, we know comparatively little about the visual processing and visually-mediated behaviors of animals with distributed visual systems which are crucial towards understanding how and why these animals see with so many eyes. In this dissertation, we investigate the visual neuroanatomy and visually-mediated behaviors of two different marine molluscs with distributed …
Panoramic Spatial Vision In The Bay Scallop Argopecten Irradians, Daniel R. Chappell, Tyler M. Horan, Daniel Isaac Speiser
Panoramic Spatial Vision In The Bay Scallop Argopecten Irradians, Daniel R. Chappell, Tyler M. Horan, Daniel Isaac Speiser
Faculty Publications
We have a growing understanding of the light-sensing organs and light-influenced behaviours of animals with distributed visual systems, but we have yet to learn how these animals convert visual input into behavioural output. It has been suggested they consolidate visual information early in their sensory-motor pathways, resulting in them being able to detect visual cues (spatial resolution) without being able to locate them (spatial vision). To explore how an animal with dozens of eyes processes visual information, we analysed the responses of the bay scallop Argopecten irradians to both static and rotating visual stimuli. We found A. irradians distinguish between …