Colour Vision Threshold in Horses
Author Information
Author(s): Lina S. V. Roth, Anna Balkenius, Almut Kelber
Primary Institution: Lund University
Hypothesis
Can horses discriminate colors in dim light conditions similar to moonlight?
Conclusion
Horses can discriminate colors at light intensities similar to moonlight, with thresholds comparable to those of humans.
Supporting Evidence
- Horses were able to discriminate colors at light intensities down to 0.02 cd/m2.
- The color vision threshold for horses was similar to that of humans.
- One horse maintained motivation and performed well at low light intensities.
Takeaway
This study shows that horses can see colors even when it's really dark, just like humans can.
Methodology
Horses were trained in a dual choice experiment to discriminate between colors at varying light intensities.
Potential Biases
Potential bias due to varying motivation levels among the horses during testing.
Limitations
Some horses lost motivation at low light intensities, which may have affected their performance.
Participant Demographics
Three horses: Chap (14 years, half blood gelding), Rex (11 years, thoroughbred gelding), Rosett (33 years, Shetland pony mare).
Statistical Information
P-Value
0.02
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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