+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Visual motion detection circuits in flies: peripheral motion computation by identified small-field retinotopic neurons

Visual motion detection circuits in flies: peripheral motion computation by identified small-field retinotopic neurons

Journal of Neuroscience 15(8): 5596-5611

Giant motion-sensitive tangential neurons in the lobula plate are thought to be cardinal elements in the oculomotor pathways of flies. However, these large neurons do not themselves compute motion, and elementary motion detectors have been proposed only from theory. Here we identify the forms, projections, and responses of small-field retinotopic neurons that comprise a well known pathway from the retina to the lobula plate. Already at the level of the second and third synapses beneath the photoreceptor layer, certain of these small elements show responses that distinguish motion from flicker. At a level equivalent to the vertebrate inner plexiform layer (the fly's outer medulla) at least one retinotopic element is directionally selective. At the inner medulla, small retinotopic neurons with bushy dendrites extending through a few neighboring columns leave the inner medulla and supply inputs onto lobula plate tangentials. These medulla relays have directionally selective responses that are indistinguishable from those of large-field tangentials except for their amplitude and modulation with contrast frequency. Centrifugal neurons leading back from the inner medulla out to the lamina also show orientation-selective responses to motion. The results suggest that specific cell types between the lamina and inner medulla correspond to stages of the Hassenstein-Reichardt correlation model of motion detection.

(PDF emailed within 0-6 h: $19.90)

Accession: 009726559

Download citation: RISBibTeXText

PMID: 7643204

DOI: 10.1523/jneurosci.15-08-05596.1995

Related references

Visual motion-detection circuits in flies: small-field retinotopic elements responding to motion are evolutionarily conserved across taxa. Journal of Neuroscience 16(15): 4563-4578, 1996

Retinotopic pathways providing motion-selective information to the lobula from peripheral elementary motion-detecting circuits. Journal of Comparative Neurology 457(4): 326-344, 2003

In flies motion sensitive neurons are postsynaptic to multiple representations of single visual sampling points anatomical evidence for elemental motion detectors. Society for Neuroscience Abstracts 15(2): 1291, 1989

A theory of moving form perception: Synergy between masking, perceptual grouping, and motion computation in retinotopic and non-retinotopic representations. Advances in Cognitive Psychology 3(1-2): 67-84, 2007

Identified motion sensitive inter neurons as neuro physiological correlates for insect motion detection system. Verhandlungen der Deutschen Zoologischen Gesellschaft 69: 253, 1976

Visual motion-detection circuits in flies: parallel direction- and non-direction-sensitive pathways between the medulla and lobula plate. Journal of Neuroscience 16(15): 4551-4562, 1996

Motion computation and visual orientation in flies. Comparative Biochemistry & Physiology A Comparative Physiology. 104(4): 659-673, 1993

Object motion sensitivity loss due to motion in the peripheral visual field. Bulletin of the Psychonomic Society 26(3): 225-228, 1988

The detection of motion in the peripheral visual field. Vision Research 24(1): 25-32, 1984

Visual course control in flies relies on neuronal computation of object and background motion. Trends in Neurosciences 11(8): 351-358, 1988

Spatial and temporal parameters of motion detection in the peripheral visual field. Journal of the Optical Society of America. A, Optics and Image Science 2(2): 252-259, 1985

Apparent motion from outside the visual field, retinotopic cortices may register extra-retinal positions. Plos One 7(10): E47386, 2013

Retinotopic parallel motion selective and non-selective neurons in flies and morphological equivalents in a hummingbird hawk moth. Society for Neuroscience Abstracts 21(1-3): 457, 1995

Unconscious retinotopic motion processing affects non-retinotopic motion perception. Consciousness and Cognition 62: 135-147, 2018

Intracellular recordings from identified small-field neurons reveal motion orientation- and direction-sensitive pathways to dipteran lobula. Society for Neuroscience Abstracts 27(1): 810, 2001