Pubblicazioni

Autori:

Rashal, Einat; Santandrea, Elisa; Ben-Hamed, Suliann; Macaluso, Emiliano; Chelazzi, Leonardo; Boehler, C Nico

Titolo:

Effects of top-down and bottom-up attention on post-selection posterior contralateral negativity

Anno:

2023

Tipologia prodotto:

Articolo in Rivista

Tipologia ANVUR:

Articolo su rivista

Lingua:

Inglese

Formato:

A Stampa

Referee:

Sì

Nome rivista:

ATTENTION, PERCEPTION & PSYCHOPHYSICS

ISSN Rivista:

1943-3921

N° Volume:

85

Numero o Fascicolo:

3

Intervallo pagine:

705-717

Parole chiave:

Cueing; RLpcN; Response-locked ERP; SPCN; Salience; Signed area; Visual search

Breve descrizione dei contenuti:

We examined the effect of combined top-down and bottom-up attentional control sources in easy and difficult visual search tasks. Applying a new analysis on previously acquired data, we focused on the sustained posterior contralateral negativity (SPCN) and the response-locked posterior contralateral negativity (RLpcN), to better understand processes following target selection. We used the signed-area approach to measure the negative area, where the signal was either locked to the target or the response onsets. We further split the RLpcN into an early and a late segment to capture the dynamics of selection and post-selection processes. In Experiment 1, participants reported the orientation of a uniquely tilted target. In Experiment 2, participants reported the position of a small gap within the uniquely tilted target. In both experiments, endogenous cues manipulated top-down attention (valid vs. neutral), and salient color singletons (either the target or a distractor) manipulated bottom-up attention. We hypothesized that the SPCN and the later segment of the RLpcN would be modulated by task difficulty and target salience, as they are associated with post-selection processes, such as response selection and working memory. The early segment of the RLpcN was hypothesized to be modulated by the cueing manipulation and presence of a salient distractor, as they affect target selection. An effect of distractor presence was observed on the early segment of the RLpcN, and our results further supported the hypotheses regarding the SPCN and the later segment of the RLpcN, providing novel insights into post-selection processes in visual search.

Pagina Web:

https://doi.org/10.3758/s13414-022-02636-7

Id prodotto:

131940

Handle IRIS:

11562/1085992

ultima modifica:

6 aprile 2023

Citazione bibliografica:

Rashal, Einat; Santandrea, Elisa; Ben-Hamed, Suliann; Macaluso, Emiliano; Chelazzi, Leonardo; Boehler, C Nico, Effects of top-down and bottom-up attention on post-selection posterior contralateral negativity «ATTENTION, PERCEPTION & PSYCHOPHYSICS» , vol. 85 , n. 3 , 2023 , pp. 705-717

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