Ashwin received a BA in Biophysics at Johns Hopkins University (2007)
and a MA/MS in Biology/Marine Biology at Northeastern University (2009).
Before entering the PhD program at the University of Washington he was
a Research Associate at Duke University in the lab of Sonke Johnsen (2009-2010).
Ashwin joined the Sisneros lab in the Fall 2010. He graduated with a Ph.D.
in Psychology (Animal Behavior) in Spring 2016. Currently Ashwin is a
postdoctoral associate at the National Institutes of Health.
Ashwin is interested
in understanding how dynamic environments shape sensory performance. His
work focuses on hearing sensitivity in larval fishes during ontogeny and
after acute noise exposure. Ashwin's
work has led to the development of a behavioral assay using prepulse inhbition
(PPI) of the acoustic startle response to measure auditory thresholds
in 5 dpf zebrafish. This assay has been used to show that auditory sensitivity
at frequencies above 90 Hz are not dependent on the lateral line in these
animals. Ashwin's dissertation work focuses on the effects of acute noise
exposure and its effects on startle response sensitivity and loss of PPI.
Ashwin is also an associate organizer of the Beneath the Waves Film Festival
Bhandiwad AA, Whitchurch
EA, Colleye O, Zeddies DG, and JA Sisneros. In Press. Seasonal
plasticity of auditory saccular sensitivity in "sneaker" type
II male plainfin midshipman fish, Porichthys notatus. J Comp Physiol.
Monroe JD, Manning DP, Uribe
PM, Bhandiwad AA, Sisneros JA, Smith ME and AB Coffin. 2016. Hearing
sensitivity differs between zebrafish lines used in auditory research.
Hearing Research 341:220-231.
Bhandiwad AA and JA
Sisneros. 2016. Revisiting psychoacoustic methods for the assessment of
fish hearing. In: Sisneros JA (Ed) Fish Hearing and Bioacoustics: An
anthology in honor of Arthur N. Popper and Richard R. Fay. Advances
in Experimental Medicine and Biology, Vol. 877, pp. 157-184, Springer
Science + Business Media, New York.
Coffin AB, Zeddies DG, Fay
RR, Brown AD, Alderks PW, Bhandiwad AA, Mohr RA, Gray MD, Rogers
PH and JA Sisneros. 2014. Use of the swim bladder and lateral line in
near-field sound source localization by fishes. Journal of Experimental
Bhandiwad AA, Zeddies
DG, Raible DW, Rubel EW and JA Sisneros. 2013. Auditory sensitivity of
larval zebrafish (Danio rerio) measured using a behavioral prepulse
inhibition assay. Journal of Experimental Biology 216:3504-3513.
Petersen CL, Timothy
M, Kim DS, Bhandiwad AA, Mohr RA, Sisneros JA, and PM Forlano.
2013. Exposure to advertisement calls of reproductive competitors activates
vocal-acoustic and catecholaminergic neurons in the plainfin midshipman
fish, Porichthys notatus. Public Library of Science One 8(8):e70474