Fitting psychometric functions using a fixed-slope parameter: an advanced alternative for estimating odor thresholds with data generated by ASTM E679.

@article{Peng2014FittingPF,
  title={Fitting psychometric functions using a fixed-slope parameter: an advanced alternative for estimating odor thresholds with data generated by ASTM E679.},
  author={Mei Peng and Sara R. Jaeger and Michael J. Hautus},
  journal={Chemical senses},
  year={2014},
  volume={39 3},
  pages={
          229-41
        }
}
Psychometric functions are predominately used for estimating detection thresholds in vision and audition. However, the requirement of large data quantities for fitting psychometric functions (>30 replications) reduces their suitability in olfactory studies because olfactory response data are often limited (<4 replications) due to the susceptibility of human olfactory receptors to fatigue and adaptation. This article introduces a new method for fitting individual-judge psychometric functions to… CONTINUE READING

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