| Acoustic features of objects matched by an echolocating bottlenose dolphin. | |
| | |
MedLine Citation:
|
PMID: 16583925 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The focus of this study was to investigate how dolphins use acoustic features in returning echolocation signals to discriminate among objects. An echolocating dolphin performed a match-to-sample task with objects that varied in size, shape, material, and texture. After the task was completed, the features of the object echoes were measured (e.g., target strength, peak frequency). The dolphin's error patterns were examined in conjunction with the between-object variation in acoustic features to identify the acoustic features that the dolphin used to discriminate among the objects. The present study explored two hypotheses regarding the way dolphins use acoustic information in echoes: (1) use of a single feature, or (2) use of a linear combination of multiple features. The results suggested that dolphins do not use a single feature across all object sets or a linear combination of six echo features. Five features appeared to be important to the dolphin on four or more sets: the echo spectrum shape, the pattern of changes in target strength and number of highlights as a function of object orientation, and peak and center frequency. These data suggest that dolphins use multiple features and integrate information across echoes from a range of object orientations. |
| | |
Authors:
|
Caroline M Delong; Whitlow W L Au; David W Lemonds; Heidi E Harley; Herbert L Roitblat |
Related Documents
:
|
17171335 - Local and global affordances and manual planning. 22682705 - Adjunctive intranasal oxytocin improves verbal memory in people with schizophrenia. 19101025 - Dissociating verbal and nonverbal audiovisual object processing. 17141565 - Object recognition learning differentiates the representations of objects at the erp co... 16972075 - Various conflicts from ventral and dorsal streams are sequentially processed in a commo... 21038195 - The noun/verb dissociation in language production: varieties of causes. |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: The Journal of the Acoustical Society of America Volume: 119 ISSN: 0001-4966 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2006 Mar |
Date Detail:
|
Created Date: 2006-04-04 Completed Date: 2007-05-24 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
|
Languages: eng Pagination: 1867-79 Citation Subset: IM |
Affiliation:
|
Hawaii Institute of Marine Biology, P O. Box 1106, Kailua, Hawaii 96734, USA. Caroline_Delong@Brown.edu |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Acoustics* Animals Bottle-Nosed Dolphin / physiology* Choice Behavior / physiology Discriminant Analysis Discrimination (Psychology) / physiology Echolocation / physiology* Linear Models Male Multivariate Analysis Sound Spectrography |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Information entropy of humpback whale songs.
Next Document: Elastic stiffness coefficients (c11, C33, and C13) for freshly excised and formalin-fixed myocardium...