scholarly journals Auditory brainstem responses during aerial testing with bottlenose dolphins (Tursiops truncatus): Effects of electrode and jawphone locations

2020 ◽  
Vol 147 (4) ◽  
pp. 2525-2533
Author(s):  
Jason Mulsow ◽  
James J. Finneran ◽  
Alyssa W. Accomando ◽  
Robert F. Burkard
Keyword(s):  
Tursiops Truncatus ◽  
Bottlenose Dolphins ◽  
Auditory Brainstem ◽  
Auditory Brainstem Responses

scholarly journals Measuring auditory cortical responses in Tursiops truncatus

2021 ◽  
Author(s):  
Matt D. Schalles ◽  
Dorian S. Houser ◽  
James J. Finneran ◽  
Peter Tyack ◽  
Barbara Shinn-Cunningham ◽  
...  
Keyword(s):  
Tursiops Truncatus ◽  
Auditory Evoked Potentials ◽  
Reference Electrode ◽  
Dorsal Surface ◽  
Auditory Brainstem ◽  
Auditory Brainstem Responses ◽  
Electrode Placement ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Long Latency

AbstractAuditory neuroscience in dolphins has largely focused on auditory brainstem responses; however, such measures reveal little about the cognitive processes dolphins employ during echolocation and acoustic communication. The few previous studies of mid- and long-latency auditory-evoked potentials (AEPs) in dolphins report different latencies, polarities, and magnitudes. These inconsistencies may be due to any number of differences in methodology, but these studies do not make it clear which methodological differences may account for the disparities. The present study evaluates how electrode placement and pre-processing methods affect mid- and long-latency AEPs in (Tursiops truncatus). AEPs were measured when reference electrodes were placed on the skin surface over the forehead, the external auditory meatus, or the dorsal surface anterior to the dorsal fin. Data were pre-processed with or without a digital 50-Hz low-pass filter, and the use of independent component analysis to isolate signal components related to neural processes from other signals. Results suggest that a meatus reference electrode provides the highest quality AEP signals for analyses in sensor space, whereas a dorsal reference yielded nominal improvements in component space. These results provide guidance for measuring cortical AEPs in dolphins, supporting future studies of their cognitive auditory processing.

Bottlenose dolphin (Tursiops truncatus) auditory brainstem responses to frequency-modulated “chirp” stimuli

2017 ◽  
Vol 142 (2) ◽  
pp. 708-717 ◽  
Author(s):  
James J. Finneran ◽  
Jason Mulsow ◽  
Ryan Jones ◽  
Dorian S. Houser ◽  
Robert F. Burkard
Keyword(s):  
Bottlenose Dolphin ◽  
Tursiops Truncatus ◽  
Auditory Brainstem ◽  
Auditory Brainstem Responses

Effects of noise burst rise time and level on bottlenose dolphin (Tursiops truncatus) auditory brainstem responses

2018 ◽  
Vol 143 (5) ◽  
pp. 2914-2921 ◽  
Author(s):  
James J. Finneran ◽  
Jason Mulsow ◽  
Dorian S. Houser ◽  
Robert F. Burkard
Keyword(s):  
Rise Time ◽  
Bottlenose Dolphin ◽  
Tursiops Truncatus ◽  
Noise Burst ◽  
Auditory Brainstem ◽  
Auditory Brainstem Responses

Auditory brainstem responses to stimulus offset in the bottlenose dolphin (Tursiops truncatus)

2019 ◽  
Vol 146 (4) ◽  
pp. 2746-2746
Author(s):  
James J. Finneran ◽  
Ryan A. Jones ◽  
Jason Mulsow ◽  
Robert F. Burkard
Keyword(s):  
Bottlenose Dolphin ◽  
Tursiops Truncatus ◽  
Auditory Brainstem ◽  
Auditory Brainstem Responses ◽  
Stimulus Offset
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