Katrina Schrode

Ph.D. 2014


Thesis Title:

Neural Mechanisms of Auditory Scene Analysis in a Non-Mammalian Animal Model

Current Position:

Research Manager/Data Analyst, Charles R. Drew University of Medicine and Science, Los Angeles, CA

Previous Position(s):

Postdoctoral Fellow, Center for Hearing and Balance, Johns Hopkins Medical Center

Undergraduate Institution and Major/Degree:

Boston University, B.A., Biology/Math, 2006

Major Advisor(s):

Mark Bee, Ph.D.

Research Description:

I am interested in the neural mechanisms underlying perception and behavior, particularly in the context of animal communication.  My research focuses on the ability of females of Cope’s gray treefrog, Hyla chrysoscelis to perform auditory scene analysis.  This ability is particularly important for females in finding and selecting high quality mates in loud, dense breeding choruses.  Amphibian ears have interesting morphology that suggests perceptual mechanisms that differ from our own.  Using behavioral tests, I am examining the cues females use to accurately group acoustic signals, and how their unusual ears contribute to exploitation of these cues.  I am also recording neural activity in the frog midbrain to identify correlates of the observed behavioral results.  A further goal of my research is to model the mechanisms underlying auditory grouping in these frogs, based on the results of my behavioral results and neural recordings.

Lab Rotations:

  • Teresa Nick
  • David Redish
  • Peter Sorensen
  • Mark Bee

Courses Taken Beyond the Core Courses:

  • STAT 5021- Statistical Analysis
  • PSY 8960- Graduate seminar in Perception
  • STAT 5302- Applied Regression Analysis
  • PSY 5960- Signal Detection Theory
  • NSC 8320- Neurostats
  • EEB 8990- Bioacoustics
  • NSC 8217- Computational and Systems Neuroscience

Conferences Attended:

  • Society for Neuroscience annual meeting- Fall 2008, 2009
  • Computational and Systems Neuroscience annual meeting- Spr 09
  • Congress for International Society for Neuroethology

Committee Memebers:

  • Mark Bee - Advisor
  • Geoff Ghose
  • Teresa Nick
  • Andrew Oxenham
  • David Redish - Chair

Selected Publications and Presentations:


  • Lee N, Schrode KM, Bee MA. Nonlinear processing of a multicomponent communication signal by combination-sensitive neurons in the anuran inferior colliculus. J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2017;203(9):749-772.
  • Schrode KM, Bee MA. Evolutionary adaptations for the temporal processing of natural sounds by the anuran peripheral auditory system. J Exp Biol. 2015;218(Pt 6):837-48.
  • Buerkle NP, Schrode KM, Bee MA. Assessing stimulus and subject influences on auditory evoked potentials and their relation to peripheral physiology in green treefrogs (Hyla cinerea). Comp Biochem and Physiol A. 2014;178:68-81.
  • Schrode KM, Buerkle NP, Brittan-Powell EF, Bee MA. Auditory brainstem responses in Cope's gray treefrog (Hyla chrysoscelis): effects of frequency, level, sex and size. J Comp Physiol A. 2014;200:221-238.
  • Caldwell MS, Lee N, Schrode KM, Johns AR, Christensen-Dalsgaard J, Bee MA. Spatial hearing in Cope's gray treefrog: II. Frequency-dependent directionality in the amplitude and phase of tympanum vibrations. J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2014;200:285-304.
  • Schrode KM*, Ward JL*, Vélez A, Bee MA. Female preferences for spectral call properties in the western genetic lineage of Cope's gray treefrog (Hyla chrysoscelis). Behav Ecol Sociobiol. 2012;66(12):1595-1606.
  • Bee MA, Cook JM, Love EK, O'Bryan LR, Pettitt BA, Schrode K, Vélez A. Assessing acoustic signal variability and the potential for sexual selection and social recognition in boreal chorus frogs (Pseudacris maculata). Ethology 2010;116(6):564-576.
  • Negus SS, Banks ML, Schrode K, Morrissey E, Rice C. Selective but slight enhancement of delta agonist-induced antinociception by repeated morphine in rhesus monkeys. FASEB J. 2009;23:742.7.
  • Negus SS, Schrode K, Stevenson GW. Micro/kappa opioid interactions in rhesus monkeys: implications for analgesia and abuse liability. Exp Clin Psychopharmacol 2008;16(5):386-99.

Invited Talks:

  • Schrode KM, Bee MA. "Mechanisms of auditory grouping in Cope’s gray treefrog (Hyla chrysoscelis)." Talk presented at International Congress for Neuroethology- Amphibian Neuroethology Satellite Meeting. University of Maryland, College Park, 2012.
  • Schrode KM, Bee MA. "Effects of spectral proximity on sequential auditory grouping in Cope's gray treefrog." GPN Colloquium Series. University of Minnesota, 2012.
  • Schrode KM, Bee MA. "The role of source segregation in discrimination."  GPN Colloquium Series. University of Minnesota, 2011.
  • Schrode KM, Bee MA. UMN Behavior Group talk. University of Minnesota, 2010.
  • Schrode KM, Bee MA. UMN Behavior Group talk. University of Minnesota, 2009.

Awards and Honors:

  • 2012 ASA Travel Award
  • 2011 GPN/Milne-Brandenburg Award
  • 2010 GPN Stark Award
  • 2010 MBL Scholarship
  • 2009 NSF Graduate Research Fellowship, Honorary Mention

Professional Memberships:

  • Society for Neuroscience
  • International Society for Neuroethology
  • Association for Research in Otolaryngology
  • Acoustical Society of America
  • Animal Behavior Society

Home Town:

  • Cincinnati, OH
Katrina Schrode