MAR 14, 2018 6:00 AM PDT

Mapping Cerebellum-to-Forebrain Connectivity Using Optogenetics and Functional Magnetic Resonance Imaging

Presented at: Neuroscience 2018
C.E. Credits: P.A.C.E. CE Florida CE
Speakers
  • Investigator, LA BioMed & Assistant Professor of Neurology, UCLA
    Biography
      Dr. Paul J. Mathews received his bachelors degree from the University of Oregon where he studied invertebrate behavioral plasticity in the lab of Dr. Nathan Tublitz. He received his Ph.D. in neuroscience from the University of Texas at Austin under the mentorship of Dr. Nace Golding. Dr. Mathews work focused on understanding how the biophysical properties of specific voltage-gated ion channels in an auditory brainstem nuclei contribute to their capacity to make sub-millisecond computations necessary for low frequency sound localization. For the past several years Dr. Mathews has been working at UCLA under the mentorship of Dr. Tom Otis where he is currently working to uncover the cerebellar circuit mechanisms that underlie motor learning and memory. To do this Dr. Mathews is utilizing a multifaceted approach that includes both in vitro and in vivo electrophysiology, optogenetics, advanced optics, histology, and behavioral manipulations to make links between cerebellar circuit activity and motor output in rodent models. He is currently on the job market looking for a tenured track assistant professor position.

    Abstract:

    Complex animal behavior is produced by dynamic interactions between discrete regions of the brain. As such, defining functional connections between brain regions is critical in gaining a full understanding of how the brain generates behavior. Evidence suggests that discrete regions of the cerebellar cortex functionally project to the forebrain, mediating long-range communication potentially important in motor and non-motor behaviors. However, the connectivity map remains largely incomplete owing to the challenge of driving both reliable and selective output from the cerebellar cortex, as well as the need for methods to detect region specific activation across the entire forebrain. I will discuss a combined optogenetic and fMRI (ofMRI) approach to elucidate the downstream forebrain regions modulated by activating a region of the cerebellum that induces stereotypical, ipsilateral forelimb movements. In this talk I will demonstrate that a single discrete region of the cerebellar cortex is capable of influencing motor output and the activity of a number of downstream forebrain as well as midbrain regions thought to be involved in different aspects of behavior.


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