Coding accuracy on the psychophysical scale

0458789 - FGÚ 2017 RIV GB eng J - Journal Article
Košťál, Lubomír - Lánský, Petr
Coding accuracy on the psychophysical scale.
Scientific Reports. Roč. 6, Mar 29 (2016), s. 23810. ISSN 2045-2322. E-ISSN 2045-2322
R&D Projects: GA ČR(CZ) GA15-08066S
Institutional support: RVO:67985823
Keywords : cortex * neural decoding * senzory processing
Subject RIV: FH - Neurology
Impact factor: 4.259, year: 2016

Sensory neurons are often reported to adjust their coding accuracy to the stimulus statistics. The observed match is not always perfect and the maximal accuracy does not align with the most frequent stimuli. As an alternative to a physiological explanation we show that the match critically depends on the chosen stimulus measurement scale. More generally, we argue that if we measure the stimulus intensity on the scale which is proportional to the perception intensity, an improved adjustment in the coding accuracy is revealed. The unique feature of stimulus units based on the psychophysical scale is that the coding accuracy can be meaningfully compared for different stimuli intensities, unlike in the standard case of a metric scale.
Permanent Link: http://hdl.handle.net/11104/0259025