Stimulus reference frame and neural coding precision

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985823%3A_____%2F16%3A00459548" target="_blank" >RIV/67985823:_____/16:00459548 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jmp.2016.02.006" target="_blank" >http://dx.doi.org/10.1016/j.jmp.2016.02.006</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jmp.2016.02.006" target="_blank" >10.1016/j.jmp.2016.02.006</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Stimulus reference frame and neural coding precision

Popis výsledku v původním jazyce

Any particular stimulus intensity, as a physical quantity, can be equivalently described in different unit systems. Researchers automatically expect the methodology and the inference obtained about the neural coding precision to be independent from such a subjective choice. We show, however, that the Fisher information, which is arguably the most popular measure of coding accuracy, may yield incompatible and in fact arbitrary results just by re-evaluating the identical stimulation scenario in transformed units. We consider only regular scale transformations given by strictly increasing and differentiable functions. On one hand, our results point to a potentially problematic aspect of the Fisher information application. On the other hand, we speculate that the unwanted transformation covariance may be removed by considering the psychophysical scale based on the ideal observer paradigm. We show that such scale implies constant Fisher information and that the matching stimulus distribution is given by the Jeffreys prior. The psychophysical perspective thus provides a novel justification for the special role of the Jeffreys prior in neural coding theory.

Název v anglickém jazyce

Stimulus reference frame and neural coding precision

Popis výsledku anglicky

Any particular stimulus intensity, as a physical quantity, can be equivalently described in different unit systems. Researchers automatically expect the methodology and the inference obtained about the neural coding precision to be independent from such a subjective choice. We show, however, that the Fisher information, which is arguably the most popular measure of coding accuracy, may yield incompatible and in fact arbitrary results just by re-evaluating the identical stimulation scenario in transformed units. We consider only regular scale transformations given by strictly increasing and differentiable functions. On one hand, our results point to a potentially problematic aspect of the Fisher information application. On the other hand, we speculate that the unwanted transformation covariance may be removed by considering the psychophysical scale based on the ideal observer paradigm. We show that such scale implies constant Fisher information and that the matching stimulus distribution is given by the Jeffreys prior. The psychophysical perspective thus provides a novel justification for the special role of the Jeffreys prior in neural coding theory.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

FH - Neurologie, neurochirurgie, neurovědy

OECD FORD obor

—

Projekt

<a href="/cs/project/GA15-08066S" target="_blank" >GA15-08066S: Efektivita informačního přenosu a role energetických omezení v neuronálních systémech</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Mathematical Psychology

ISSN

0022-2496

e-ISSN

—

Svazek periodika

71

Číslo periodika v rámci svazku

Apr 2016

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

22-27

Kód UT WoS článku

000374511600003

EID výsledku v databázi Scopus

2-s2.0-84960533404