NDLI: Stream-related preferences of inputs to the superior colliculus from areas of dorsal and ventral streams of mouse visual cortex

Content Provider	PubMed Central
Author	Wang, Quanxin Burkhalter, Andreas
Abstract	Previous studies of intracortical connections in mouse visual cortex have revealed two subnetworks that resemble the dorsal and ventral streams in primates. Although calcium imaging studies have shown that many areas of the ventral stream have high spatial acuity whereas areas of the dorsal stream are highly sensitive for transient visual stimuli, there are some functional inconsistencies that challenge a simple grouping into ‘what/perception’ and ‘where/action’ streams known in primates. The superior colliculus (SC) is a major center for processing of multimodal sensory information and the motor control of orienting the eyes, head and body. Visual processing is performed in superficial layers, whereas premotor activity is generated in deep layers of the SC. As the SC is known to receive input from visual cortex, we asked whether the projections from 10 visual areas of the dorsal and ventral streams terminate in differential depth profiles within the SC. We found that inputs from primary visual cortex (V1) are by far the strongest. Projections from the ventral stream were substantially weaker, whereas the sparsest input originated from areas of the dorsal stream. Importantly, we found that ventral stream inputs terminated in superficial layers, whereas dorsal stream inputs tended to be patchy and either projected equally to superficial and deep layers or strongly preferred deep layers. The results suggest that the anatomically defined ventral and dorsal streams contain areas which belong to distinct functional systems, specialized for the processing of visual information and visually guided action, respectively.
Related Links	http://dx.doi.org/10.1523/jneurosci.3067-12.2013
Ending Page	1705
Page Count	10
Starting Page	1696
File Format	PDF
ISSN	02706474
e-ISSN	15292401
Journal	The Journal of neuroscience : the official journal of the Society for Neuroscience
Issue Number	4
Volume Number	33
Language	English
Publisher Date	2013-01-23
Access Restriction	Open
Subject Keyword	Neuroscience(all) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Neuroscience

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