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Posted by
btel
- Last updated: 2004-07-06
| Title |
Article.2004.07.06.13
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| File | NR-12-2927.pdf |
| Short Description |
Convergence of Y and non-Y channels onto single neurons in the superior colliculi of the cat.
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| Description | Receptive field properties of single neurons in the cat superior colliculus were examined following selective conduction-block of Y-type fibers in contralateral optic nerve. Although the responses evoked by photic stimuli presented via the Y-blocked eye were significantly weaker than those evoked by stimuli presented via the normal eye, > 85% of collicular cells were binocular. Furthermore, when binocular cells were stimulated via the Y-blocked eye their median upper cut-off velocity (100 degrees /s) was significantly lower than that (400 degrees /s) for stimuli presented via the normal eye. Thus, there is a substantial degree of excitatory convergence of Y- and non-Y- information channels on single collicular neurons and the responses to high velocity of motion appear to depend on the integrity of Y-type input. |
| Bibliographic Information | NeuroReport 12: 2927 - 2933 |
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| Original Release Date |
2004/04/19 20:26:00 GMT+2
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