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Titolo:
Attention modulation of neural tuning through peak and base rate
Autore:
Nakahara, H; Wu, S; Amari, S;
Indirizzi:
RIKEN, Brain Sci Inst, Wako, Saitama 3510198, Japan RIKEN Wako Saitama Japan 3510198 n Sci Inst, Wako, Saitama 3510198, Japan
Titolo Testata:
NEURAL COMPUTATION
fascicolo: 9, volume: 13, anno: 2001,
pagine: 2031 - 2047
SICI:
0899-7667(200109)13:9<2031:AMONTT>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
MONKEY VISUAL-CORTEX; POPULATION CODES; CORTICAL AREAS; PSYCHOPHYSICAL PERFORMANCE; SELECTIVE ATTENTION; STRIATE CORTEX; SINGLE NEURONS; MACAQUE; V4; MOTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Engineering, Computing & Technology
Citazioni:
50
Recensione:
Indirizzi per estratti:
Indirizzo: Nakahara, H RIKEN, Brain Sci Inst, Wako, Saitama 3510198, Japan RIKEN Wako Saitama Japan 3510198 Wako, Saitama 3510198, Japan
Citazione:
H. Nakahara et al., "Attention modulation of neural tuning through peak and base rate", NEURAL COMP, 13(9), 2001, pp. 2031-2047

Abstract

This study investigates the influence of attention modulation on neural tuning functions. It has been shown in experiments that attention modulation alters neural tuning curves. Attention has been considered at least to serve to resolve limiting capacities and to increase the sensitivity to attended stimulus, while the exact functions of attention are still under debate. Inspired by recent experimental results on attention modulation, we investigate the influence of changes in the height and base rate of the tuning curve on the encoding accuracy, using the Fisher information. Under an assumption of stimulus-conditional independence of neural responses, we derive explicit conditions that determine when the height and base rate should be increased or decreased to improve encoding accuracy. Notably, a decrease in the tuning height and base rate can improve the encoding accuracy in some cases. Our theoretical results can predict the effective size of attention modulation on the neural population with respect to encoding accuracy. We discuss how our method can be used quantitatively to evaluate different aspectsof attention function.

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Documento generato il 23/01/20 alle ore 03:52:20