Retinotectal transmission in the optic tectum of rainbow trout

2005 ◽  
Vol 484 (2) ◽  
pp. 249-259 ◽  
Author(s):  
Masae Kinoshita ◽  
Masahiro Fukaya ◽  
Takuro Tojima ◽  
Satoshi Kojima ◽  
Hironori Ando ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Optic Tectum ◽  
Retinotectal Transmission

Long-term potentiation in the optic tectum of rainbow trout

2004 ◽  
Vol 370 (2-3) ◽  
pp. 146-150 ◽  
Author(s):  
Masae Kinoshita ◽  
Toshiyuki Hosokawa ◽  
Akihisa Urano ◽  
Etsuro Ito
Keyword(s):  
Rainbow Trout ◽  
Optic Tectum ◽  
Long Term Potentiation ◽  
Term Potentiation

scholarly journals Functional segregation of retinal ganglion cell projections to the optic tectum of rainbow trout

2015 ◽  
Vol 114 (5) ◽  
pp. 2703-2717 ◽  
Author(s):  
Iñigo Novales Flamarique ◽  
Matt Wachowiak
Keyword(s):  
Rainbow Trout ◽  
Ganglion Cell ◽  
Optic Tectum ◽  
Visual Information ◽  
Activity Patterns ◽  
Chromatic Adaptation ◽  
Retinal Cell ◽  
Fiber Types ◽  
Dynamic Activity ◽  
Local Circuitry

The interpretation of visual information relies on precise maps of retinal representation in the brain coupled with local circuitry that encodes specific features of the visual scenery. In nonmammalian vertebrates, the main target of ganglion cell projections is the optic tectum. Although the topography of retinotectal projections has been documented for several species, the spatiotemporal patterns of activity and how these depend on background adaptation have not been explored. In this study, we used a combination of electrical and optical recordings to reveal a retinotectal map of ganglion cell projections to the optic tectum of rainbow trout and characterized the spatial and chromatic distribution of ganglion cell fibers coding for increments (ON) and decrements (OFF) of light. Recordings of optic nerve activity under various adapting light backgrounds, which isolated the input of different cone mechanisms, yielded dynamic patterns of ON and OFF input characterized by segregation of these two fiber types. Chromatic adaptation decreased the sensitivity and response latency of affected cone mechanisms, revealing their variable contributions to the ON and OFF responses. Our experiments further demonstrated restricted input from a UV cone mechanism to the anterolateral optic tectum, in accordance with the limited presence of UV cones in the dorsotemporal retina of juvenile rainbow trout. Together, our findings show that retinal inputs to the optic tectum of this species are not homogeneous, exhibit highly dynamic activity patterns, and are likely determined by a combination of biased projections and specific retinal cell distributions and their activity states.

scholarly journals Latencies and discharge patterns of color-opponent neurons in the rainbow trout optic tectum

1999 ◽  
Vol 39 (17) ◽  
pp. 2795-2799 ◽  
Author(s):  
C.G. McDonald ◽  
C.W. Hawryshyn
Keyword(s):  
Rainbow Trout ◽  
Optic Tectum ◽  
Discharge Patterns

Roles of periventricular neurons in retinotectal transmission in the optic tectum

2006 ◽  
Vol 79 (2) ◽  
pp. 112-121 ◽  
Author(s):  
Masae Kinoshita ◽  
Etsuro Ito
Keyword(s):  
Optic Tectum ◽  
Retinotectal Transmission

Periventricular efferent neurons in the optic tectum of rainbow trout

2006 ◽  
Vol 499 (4) ◽  
pp. 546-564 ◽  
Author(s):  
Masae Kinoshita ◽  
Etsuro Ito ◽  
Akihisa Urano ◽  
Hironobu Ito ◽  
Naoyuki Yamamoto
Keyword(s):  
Rainbow Trout ◽  
Optic Tectum ◽  
Efferent Neurons

A Cholinergic Circuit Intrinsic to Optic Tectum Modulates Retinotectal Transmission via Presynaptic Nicotinic Receptors

1991 ◽  
Vol 627 (1 Activity-Driv) ◽  
pp. 363-367 ◽  
Author(s):  
W. MICHAEL KING ◽  
JOHN T. SCHMIDT
Keyword(s):  
Optic Tectum ◽  
Nicotinic Receptors ◽  
Retinotectal Transmission

Neuromodulatory effects of gonadotropin-releasing hormone on retinotectal synaptic transmission in the optic tectum of rainbow trout

2007 ◽  
Vol 25 (2) ◽  
pp. 480-484 ◽  
Author(s):  
Masae Kinoshita ◽  
Suguru Kobayashi ◽  
Akihisa Urano ◽  
Etsuro Ito
Keyword(s):  
Rainbow Trout ◽  
Synaptic Transmission ◽  
Optic Tectum ◽  
Gonadotropin Releasing Hormone ◽  
Releasing Hormone
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