NDLI: Harbour seals (Phoca vitulina) are able to time precisely

Content Provider	Springer Nature Link
Author	Heinrich, Tamara Dehnhardt, Guido Hanke, Frederike D.
Copyright Year	2016
Abstract	Time along with space is one of the two fundamental dimensions of life. Whereas spatial aspects have been considered in experiments with marine mammals, research has so far not focused on timing per se although it is most likely involved in many behaviours such as foraging or navigation. This study investigated whether harbour seals possess a sense of time and how precisely they are able to discriminate time intervals. Experiments took place in a chamber that allowed keeping ambient illumination constant at 40 lx. The animal was presented with a white circle on a black background on a monitor displayed for a preset time interval. In a two-alternative forced-choice experiment, the animal had to indicate the presence of the standard or a longer comparison time interval by moving its head to one out of two response targets. Time difference thresholds were assessed for various standard intervals between 3 to 30 s adopting a staircase procedure. The experimental animal found access to the task easily and discriminated time intervals with difference thresholds partly in the millisecond range. Thus our study revealed a well-developed sense of time in a pinniped species. Time, besides information provided by the classical senses, is thus most likely an important parameter seals can rely on for various tasks including navigation and foraging.
Starting Page	1133
Ending Page	1142
Page Count	10
File Format	PDF
ISSN	14359448
Journal	Animal Cognition
Volume Number	19
Issue Number	6
e-ISSN	14359456
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-08-05
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Timing Interval timing Pinnipeds Sense of time Time difference thresholds Behavioral Sciences Zoology Psychology Research
Content Type	Text
Resource Type	Article
Subject	Experimental and Cognitive Psychology Ecology, Evolution, Behavior and Systematics

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