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

@article{Dehnhardt1994TactileSD,
  title={Tactile size discrimination by a California sea lion (Zalophus californianus) using its mystacial vibrissae},
  author={Guido Dehnhardt},
  journal={Journal of Comparative Physiology A},
  year={1994},
  volume={175},
  pages={791-800}
}
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

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