Mammal Underwater Acoustics
Abstract
Underwater signal-detection performance of sea lions was influenced by changes in the probability of signal presentation in both acoustic and visual tasks. Normally, marine mammals in a signal-detection task maintain a low level of false alarms while attempting to maximize their correct detections or hits. It was shown that such an objective in a marine mammal (the California sea lion) can be changed without, in some instances, changing the animal's sensitivity. Thus, by changing its response criterion as a function of varying the probability of signal presentation, a set of probability limits could be induced into a sea lion regarding the acceptance or rejection of signal presence or signal difference. By relating the probability of hits to false alarms for several signals of varying magnitude, one can plot the 'receiver-operating- characteristic' (ROC) curves for sea lions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 18, 1972
- Accession Number
- AD0746520
Entities
People
- Ronald J. Schusterman
Organizations
- SRI International