Abstract. The area V6A of the medial parieto-occipital cortex of the macaque is studied for gaze sensitivity. The reported experimental observations support the computational theory of the gain fields to produce a distributed representation of the real position of targets in head-centered coordinates. Although it was originally pointed out that the majority of the cells exhibit roughly linear gain fields [1] [2], we have verified that the peak-shaped gaze fields reported in this study are not in contrast with the gain field models developed in the theoretical neuroscience literature [3] [4]. Rather, the use of peak-shaped (e.g., non monotonic) gaze fields even improves the efficiency of the coding scheme by reducing the number of units that are necessary to encode the target position.
Titolo: | Evidence for Peak-shaped Gaze Fields in Area V6A: Implications for Sensorimotor Transformations in Reaching Tasks. |
Autore/i: | BREVEGLIERI, ROSSELLA; BOSCO, ANNALISA; Canessa A.; FATTORI, PATRIZIA; Sabatini S. P. |
Autore/i Unibo: | |
Anno: | 2009 |
Titolo del libro: | Bioinspired Applications in Artificial and Natural Computation |
Pagina iniziale: | 324 |
Pagina finale: | 333 |
Abstract: | Abstract. The area V6A of the medial parieto-occipital cortex of the macaque is studied for gaze sensitivity. The reported experimental observations support the computational theory of the gain fields to produce a distributed representation of the real position of targets in head-centered coordinates. Although it was originally pointed out that the majority of the cells exhibit roughly linear gain fields [1] [2], we have verified that the peak-shaped gaze fields reported in this study are not in contrast with the gain field models developed in the theoretical neuroscience literature [3] [4]. Rather, the use of peak-shaped (e.g., non monotonic) gaze fields even improves the efficiency of the coding scheme by reducing the number of units that are necessary to encode the target position. |
Data prodotto definitivo in UGOV: | 12-feb-2010 |
Appare nelle tipologie: | 4.01 Contributo in Atti di convegno |