Behavioural and neural correlates of binaural hearing
Sollini, Joseph A. (2013) Behavioural and neural correlates of binaural hearing. PhD thesis, University of Nottingham.
The work in this thesis involves two separate projects. The first project involves the behavioural measurement of auditory thresholds in the ferret (Mustela Putorius). A new behavioural paradigm using a sound localisation task was developed which produces reliable psychophysical detection thresholds in animals. Initial attempts to use the task failed and after further investigation improvements were made. These changes produced a task that successfully produced reliably low thresholds. Different methods of testing, and the number of experimental trials required, here then explored systemically. The refined data collection method was then used to investigate frequency resolution in the ferret. These data demonstrated that the method was suitable for measuring perceptual frequency selectivity. It revealed that the auditory filters of ferrets are broader than several other species. In some cases this was also broader than neural estimates would suggest.
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