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Measuring the Complete-arch Distortion of an Optical Dental Impression

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The Flashed Face Distortion Effect Does Not Depend on Face-Specific Mechanisms.

Benjamin Balas^1,2, Hannah Pearson³

¹Department of Psychology, North Dakota State University, North Dakota, USA. benjamin.balas@ndsu.edu.

Scientific Reports

|February 9, 2019

Summary

This summary is machine-generated.

The flashed-face distortion effect (FFDE) causes normal faces to appear distorted in peripheral vision. Peripheral vision processing and presentation speed significantly influence the FFDE's strength, while factors like makeup or face inversion have minimal impact.

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Area of Science:

Visual perception
Cognitive psychology
Neuroscience

Background:

The flashed-face distortion effect (FFDE) is a compelling visual illusion where faces in peripheral vision appear distorted.
Despite its prevalence, the factors influencing the FFDE's strength and its underlying phenomenology remain largely unexplored.

Purpose of the Study:

To investigate the factors modulating the strength of the flashed-face distortion effect (FFDE).
To examine the influence of facial appearance and stimulus properties on face perception in peripheral vision.

Main Methods:

Three experiments manipulated image eccentricity, presentation rate, local contrast (makeup), face inversion, and image size.
Participants viewed rapidly presented faces in the visual periphery to assess the FFDE's strength.

Main Results:

Image eccentricity and presentation rate significantly modulated the strength of the FFDE.
Factors such as makeup, face inversion, and image size had minimal impact on the illusion's strength.

Conclusions:

The FFDE's strength is highly dependent on stimulus presentation dynamics and viewing location.
These findings offer insights into the mechanisms of face coding in peripheral vision and guide future research.