» Articles » PMID: 22446550

Why Do We See What's Not There?

Overview
Specialty Biology
Date 2012 Mar 27
PMID 22446550
Citations 3
Authors
Affiliations
Soon will be listed here.
Abstract

Conscious perception is not the result of passively processing sensory input, but to large extent of active inference based on previous knowledge. This process of inference does go astray from time to time, and may lead to illusory perception: sometimes people see things that are not there. In a recent study we have shown that this inference may also be influenced by mood. Here we present some additional data, suggesting that illusory percepts are the result of increased top-down processing, which is normally helpful in detecting real stimuli. Finally, we speculate on a possible function of mood-dependent modulation of this top-down processing in social perception in particular.

Citing Articles

Instruction effects on randomness in sequence generation.

Guseva M, Bogler C, Allefeld C, Haynes J Front Psychol. 2023; 14:1113654.

PMID: 37034908 PMC: 10075230. DOI: 10.3389/fpsyg.2023.1113654.


Investigating Emotional Top Down Modulation of Ambiguous Faces by Single Pulse TMS on Early Visual Cortices.

Yaple Z, Vakhrushev R Front Neurosci. 2016; 10:305.

PMID: 27445674 PMC: 4928532. DOI: 10.3389/fnins.2016.00305.


Dissociating sensory from decision processes in human perceptual decision making.

Mostert P, Kok P, de Lange F Sci Rep. 2015; 5:18253.

PMID: 26666393 PMC: 4678878. DOI: 10.1038/srep18253.

References
1.
Jolij J, Scholte H, van Gaal S, Hodgson T, Lamme V . Act quickly, decide later: long-latency visual processing underlies perceptual decisions but not reflexive behavior. J Cogn Neurosci. 2011; 23(12):3734-45. DOI: 10.1162/jocn_a_00034. View

2.
Loth E, Gomez J, Happe F . When seeing depends on knowing: adults with Autism Spectrum Conditions show diminished top-down processes in the visual perception of degraded faces but not degraded objects. Neuropsychologia. 2009; 48(5):1227-36. DOI: 10.1016/j.neuropsychologia.2009.12.023. View

3.
Vandenbroucke M, Scholte H, van Engeland H, Lamme V, Kemner C . A new approach to the study of detail perception in Autism Spectrum Disorder (ASD): investigating visual feedforward, horizontal and feedback processing. Vision Res. 2008; 49(9):1006-16. DOI: 10.1016/j.visres.2007.12.017. View

4.
Zhang H, Liu J, Huber D, Rieth C, Tian J, Lee K . Detecting faces in pure noise images: a functional MRI study on top-down perception. Neuroreport. 2008; 19(2):229-33. DOI: 10.1097/WNR.0b013e3282f49083. View

5.
Jolij J, Meurs M . Music alters visual perception. PLoS One. 2011; 6(4):e18861. PMC: 3080883. DOI: 10.1371/journal.pone.0018861. View