Our relationship with the visual world is heavily dependent on our ability to receive and process light coming into the eye. A portion of that light-derived information is needed for many non-image-forming visual functions like programming our biological clocks, controlling eye movement, and influencing mood. A major region of the brain which receives this non-image-forming visual information is located in the ventral thalamus and known as the ventral lateral geniculate nucleus (vLGN). Although the vLGN has connections with downstream regions involved in important functions, including visuomotor function, circadian photoentrainment, and vestibular function, it has not been well-studied. One reason for this significant gap in knowledge is that very little is known about funda- mental characteristics of vLGN, particularly with respect to its cellular and molecular landscape, thus making it technically challenging to develop tools to answer outstanding questions about its role in visual information pro- cessing. This study is motivated by the need to characterize the molecular architecture of vLGN, and to identify the neurons which form connections with retinal fibers. This project directly aligns with the BRAIN Initiative and the NIH's Blueprint Program by expanding fundamental understanding of neuroscience using innovative re- search methods to characterize cell types in the nervous system and mapping connected neurons in the brain. The results of this work will significantly impact the field and generate a deeper understanding of a visual region of the brain which receives, processes, and transmits non-image-forming visual information.

Public Health Relevance

In humans, some of the light-derived visual information leaving the eye processed in specific ways to mediate critical functions, including programming the circadian clock and controlling eye movement. Understanding the regions of the brain which receive, process, and transmit this non-image-forming visual information is a critical step in understanding and addressing the health issues which arising from their dysfunction, including jet-lag, sleep disorders, depression, and visuomotor disorders.

Agency
National Institute of Health (NIH)
Institute
National Institute of Neurological Disorders and Stroke (NINDS)
Project #
1F99NS113459-01
Application #
9838395
Study Section
Special Emphasis Panel (ZNS1)
Program Officer
Jones, Michelle
Project Start
2019-07-15
Project End
2021-07-14
Budget Start
2019-07-15
Budget End
2020-07-14
Support Year
1
Fiscal Year
2019
Total Cost
Indirect Cost
Name
Virginia Polytechnic Institute and State University
Department
Biology
Type
Graduate Schools
DUNS #
003137015
City
Blacksburg
State
VA
Country
United States
Zip Code
24061