Tactile size discrimination by a California sea lion (Zalophus californianus) using its mystacial vibrissae

  title={Tactile size discrimination by a California sea lion (Zalophus californianus) using its mystacial vibrissae},
  author={Guido Dehnhardt},
  journal={Journal of Comparative Physiology A},
The capability of a blindfolded California sea lion (Zalophus californianus) to discriminate diameter differences of circular discs by means of active touch with its mystacial vibrissae was studied. Using a forced choice paradigm the sea lion was required to choose the larger of two simultaneously presented perspex discs. Absolute difference thresholds (ΔD) were determined for 3 standard discs (1.12 cm Ø, 2.52 cm Ø, 8.74 cm Ø) by the psychophysical method of constants. Increasing disc size… CONTINUE READING


Publications citing this paper.
Showing 1-10 of 22 extracted citations

Sensory biology of aquatic mammals

Journal of Comparative Physiology A • 2013
View 1 Excerpt


Publications referenced by this paper.
Showing 1-10 of 30 references

Biometric analyses of vibrissal tactile discrimination in the rat.

The Journal of neuroscience : the official journal of the Society for Neuroscience • 1990

Preliminary results from psychophysical studies on the tactile sensitivity in marine mammals

JA Thomas, RA Kastelein, AG Dietze

The sensitivity of the vibrissae of a pacific walrus ( Odobenus rosmarus divergens ) Part I

RA Kastelein
Aquatic Mammals • 1988

Determination of tile vibration sensitivity of harbour seal ( Phoca vitulina ) vibrissae

F Mills, D Renouf
J Exp Mar Biol Ecol • 1986

Somatotopic projections in the cerebral cortex of the fur seal ( Callorhinus ursinus )

VV LadyginaTEPopov, Supin AYa
Academy of Siences Moskow • 1985

Similar Papers

Loading similar papers…