Publications

Authors:

Pascucci, David; Mancuso, Giovanni; Santandrea, Elisa; Della Libera, Chiara; Plomp, Gijs; Chelazzi, Leonardo

Title:

Laws of concatenated perception: Vision goes for novelty, decisions for perseverance

Year:

2019

Type of item:

Articolo in Rivista

Tipologia ANVUR:

Articolo su rivista

Language:

Inglese

Format:

Elettronico

Referee:

Sì

Name of journal:

PLOS BIOLOGY

ISSN of journal:

1545-7885

N° Volume:

17

Number or Folder:

3

Page numbers:

e3000144-42 pages

Keyword:

perception; sensory adaptation; perceptual decision; bias; models

Short description of contents:

Every instant of perception depends on a cascade of brain processes calibrated to the history of sensory and decisional events. In the present work, we show that human visual perception is constantly shaped by two contrasting forces exerted by sensory adaptation and past decisions. In a series of experiments, we used multilevel modeling and cross-validation approaches to investigate the impact of previous stimuli and decisions on behavioral reports during adjustment and forced-choice tasks. Our results revealed that each perceptual report is permeated by opposite biases from a hierarchy of serially dependent processes: Low-level adaptation repels perception away from previous stimuli, whereas decisional traces attract perceptual reports toward the recent past. In this hierarchy of serial dependence, "continuity fields" arise from the inertia of decisional templates and not from low-level sensory processes. This finding is consistent with a Two-process model of serial dependence in which the persistence of readout weights in a decision unit compensates for sensory adaptation, leading to attractive biases in sequential perception. We propose a unified account of serial dependence in which functionally distinct mechanisms, operating at different stages, promote the differentiation and integration of visual information over time.

Web page:

https://doi.org/10.1371/journal.pbio.3000144

Product ID:

107358

Handle IRIS:

11562/992528

Last Modified:

November 17, 2022

Bibliographic citation:

Pascucci, David; Mancuso, Giovanni; Santandrea, Elisa; Della Libera, Chiara; Plomp, Gijs; Chelazzi, Leonardo, Laws of concatenated perception: Vision goes for novelty, decisions for perseverance «PLOS BIOLOGY» , vol. 17 , n. 3 , 2019 , pp. e3000144-42 pages

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