Abstract:
:Binocular competition is thought to drive eye-specific segregation in the developing visual system, potentially through Hebbian synaptic learning rules that are sensitive to correlations in afferent activity. Altering retinal activity can disrupt eye-specific segregation, but little is known about the temporal features of binocular activity that modulate visual map development. We used optogenetic techniques to directly manipulate retinal activity in vivo and identified a critical period before eye opening in mice when specific binocular features of retinal activity drive visual map development. Synchronous activation of both eyes disrupted segregation, whereas asynchronous stimulation enhanced segregation. The optogenetic stimulus applied was spatially homogenous; accordingly, retinotopy of ipsilateral projections was markedly perturbed, but contralateral retinotopy was unaffected or even improved. These results provide direct evidence that the synchrony and precise temporal pattern of binocular retinal activity during a critical period in development regulates eye-specific segregation and retinotopy in the developing visual system.
journal_name
Nat Neuroscijournal_title
Nature neuroscienceauthors
Zhang J,Ackman JB,Xu HP,Crair MCdoi
10.1038/nn.3007subject
Has Abstractpub_date
2011-11-18 00:00:00pages
298-307issue
2eissn
1097-6256issn
1546-1726pii
nn.3007journal_volume
15pub_type
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