Pubblicazioni

Autori:

Sani, Ilaria; Santandrea, Elisa; Golzar, A.; Morrone, M. C.; Chelazzi, Leonardo

Titolo:

Selective tuning for contrast in macaque area V4

Anno:

2013

Tipologia prodotto:

Articolo in Rivista

Tipologia ANVUR:

Articolo su rivista

Lingua:

Inglese

Formato:

A Stampa

Referee:

Sì

Nome rivista:

Journal of Neuroscience

ISSN Rivista:

0270-6474

N° Volume:

33

Numero o Fascicolo:

47

Editore:

Society for Neuroscience

Intervallo pagine:

18583-18596

Parole chiave:

Luminance contrast; macaque area V4d; monotonic and non-monotonic contrast response functions; selective tuning for contrast; temporal dynamics of contrast selectivity

Breve descrizione dei contenuti:

Visually responsive neurons typically exhibit a monotonic-saturating increase of firing with luminance contrast of the stimulus and are able to adapt to the current spatiotemporal context by shifting their selectivity, therefore being perfectly suited for optimal contrast encoding and discrimination. Here we report the first evidence of the existence of neurons showing selective tuning for contrast in area V4d of the behaving macaque (Macaca mulatta), i.e., narrow bandpass filter neurons with peak activity encompassing the whole range of visible contrasts and pronounced attenuation at contrasts higher than the peak. Crucially, we found that contrast tuning emerges after a considerable delay from stimulus onset, likely reflecting the contribution of inhibitory mechanisms. Selective tuning for luminance contrast might support multiple functions, including contrast identification and the attentive selection of low contrast stimuli.

Pagina Web:

http://dx.doi.org/10.1523/JNEUROSCI.3465-13.2013

Id prodotto:

78683

Handle IRIS:

11562/635153

depositato il:

22 novembre 2013

ultima modifica:

14 novembre 2022

Citazione bibliografica:

Sani, Ilaria; Santandrea, Elisa; Golzar, A.; Morrone, M. C.; Chelazzi, Leonardo, Selective tuning for contrast in macaque area V4 «Journal of Neuroscience» , vol. 33 , n. 47 , 2013 , pp. 18583-18596

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