Abstract:
:Binocular vision requires an exquisite matching of projections from each eye to form a cohesive representation of the visual world. Eye-specific inputs are anatomically segregated, but in register in the visual thalamus, and overlap within the binocular region of primary visual cortex. Here, we show that the transmembrane protein Ten_m3 regulates the alignment of ipsilateral and contralateral projections. It is expressed in a gradient in the developing visual pathway, which is consistently highest in regions that represent dorsal visual field. Mice that lack Ten_m3 show profound abnormalities in mapping of ipsilateral, but not contralateral, projections, and exhibit pronounced deficits when performing visually mediated behavioural tasks. It is likely that the functional deficits arise from the interocular mismatch, because they are reversed by acute monocular inactivation. We conclude that Ten_m3 plays a key regulatory role in the development of aligned binocular maps, which are required for normal vision.
journal_name
PLoS Bioljournal_title
PLoS biologyauthors
Leamey CA,Merlin S,Lattouf P,Sawatari A,Zhou X,Demel N,Glendining KA,Oohashi T,Sur M,Fässler Rdoi
10.1371/journal.pbio.0050241subject
Has Abstractpub_date
2007-09-01 00:00:00pages
e241issue
9eissn
1544-9173issn
1545-7885pii
07-PLBI-RA-0234journal_volume
5pub_type
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