Summary
This study identifies unusual nonlinear receptive field properties in ON and OFF smooth monostratified ganglion cells in the primate retina, featuring spatially segregated hotspots with dendritic contributions. While not directly applicable to lighting design, these findings deepen understanding of how the primate retina encodes spatial information through previously unreported mechanisms in parallel visual pathways.
Key Findings
- Large-scale multi-electrode recordings from 48 macaque retinas revealed ON and OFF smooth monostratified ganglion cells with irregularly structured receptive fields composed of spatially segregated hotspots, distinct from all previously described retinal ganglion cell types.
- OFF smooth monostratified cells exhibited stronger hotspot structure than ON counterparts, suggesting asymmetry between the two paired cell types.
- Different hotspots within the same cell produced subtly different spatiotemporal spike waveforms, implicating dendritic rather than purely somatic mechanisms in hotspot generation.
- Computational analysis showed each hotspot could not be explained by a single presynaptic input, indicating convergent nonlinear subunit processing.
Categories
The Science of Light: Characterizes physiological and computational properties of primate retinal ganglion cell types, advancing understanding of retinal output pathways and spatial visual processing.
Author(s)
CE Rhoades, NP Shah, MB Manookin, N Brackbill
Publication Year
2018
Number of Citations
1
Related Publications
The Science of Light
- Phototransduction by retinal ganglion cells that set the circadian clock
- Color appearance models
- The mammalian circadian timing system: organization and coordination of central and peripheral clocks
- Diminished pupillary light reflex at high irradiances in melanopsin-knockout mice
- Melanopsin is required for non-image-forming photic responses in blind mice