The goal of our research is to understand how visual processing is influenced by behavioral demands. The visual thalamus (dorsal lateral geniculate nucleus, LGN) plays a key role in this process, as it provides an intermediate relay between the retina and cortex, where transmission can be dynamically regulated based on multiple modulatory inputs. Although thalamic function has been studied extensively in vitro and under anesthesia, we still do not understand how behavioral state modulates the multiple pathways in LGN during awake visual processing. To address this gap we will study the mouse visual system, in order to take advantage of the range of molecular genetic tools that are available to identify and manipulate the underlying neural circuits. In our first aim, we will delineate the visal pathways present in mouse LGN, both in terms of neural coding and spatial organization, as measured with high-density in vivo electrophysiology. Next, we will determine how information in these pathways is modulated by behavioral state, by measuring the changes in visually-evoked neural activity associated with locomotion in alert subjects. Finally, we will test the role of neuromodulatory inputs in mediating the effects of behavioral state, using optogenetic manipulation of cholinergic circuitry. This work will advance our understanding of the selective gating of information in the brain, which is essential for both visual function and cognitive processes.

Public Health Relevance

This work will study the mechanisms underlying the regulation of visual processing by behavioral state, which is important in understanding both normal and impaired visual function. Furthermore, many conditions such as dyslexia, ADHD, and schizophrenia, are associated with deficits in the ability to appropriately gate sensory information.

National Institute of Health (NIH)
National Eye Institute (NEI)
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Special Emphasis Panel (SPC)
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Steinmetz, Michael A
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University of Oregon
Other Basic Sciences
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Tschetter, Wayne W; Govindaiah, Gubbi; Etherington, Ian M et al. (2018) Refinement of Spatial Receptive Fields in the Developing Mouse Lateral Geniculate Nucleus Is Coordinated with Excitatory and Inhibitory Remodeling. J Neurosci 38:4531-4542
Tomorsky, Johanna; DeBlander, Leah; Kentros, Clifford G et al. (2017) TU-Tagging: A Method for Identifying Layer-Enriched Neuronal Genes in Developing Mouse Visual Cortex. eNeuro 4:
Kim, Tony Hyun; Zhang, Yanping; Lecoq, Jérôme et al. (2016) Long-Term Optical Access to an Estimated One Million Neurons in the Live Mouse Cortex. Cell Rep 17:3385-3394
Hoy, Jennifer L; Yavorska, Iryna; Wehr, Michael et al. (2016) Vision Drives Accurate Approach Behavior during Prey Capture in Laboratory Mice. Curr Biol 26:3046-3052
Wekselblatt, Joseph B; Flister, Erik D; Piscopo, Denise M et al. (2016) Large-scale imaging of cortical dynamics during sensory perception and behavior. J Neurophysiol 115:2852-66
Hoy, Jennifer L; Niell, Cristopher M (2015) Layer-specific refinement of visual cortex function after eye opening in the awake mouse. J Neurosci 35:3370-83
Niell, Cristopher M (2015) Cell types, circuits, and receptive fields in the mouse visual cortex. Annu Rev Neurosci 38:413-31
Weible, Aldis P; Liu, Christine; Niell, Cristopher M et al. (2014) Auditory cortex is required for fear potentiation of gap detection. J Neurosci 34:15437-45
Lee, A Moses; Hoy, Jennifer L; Bonci, Antonello et al. (2014) Identification of a brainstem circuit regulating visual cortical state in parallel with locomotion. Neuron 83:455-466
Piscopo, Denise M; El-Danaf, Rana N; Huberman, Andrew D et al. (2013) Diverse visual features encoded in mouse lateral geniculate nucleus. J Neurosci 33:4642-56

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