3D amplifies emotions evoked by facial expressions

The research findings have implications for emotion research, entertainment industry and 3D displays.

Six stereoscopic image pairs used in the experiment. The images can be seen in 3D by 'looking through' the image.

Mediated facial expressions do not elicit emotions as strongly as real-life facial expressions. In particular, 2D photographs of facial expressions fail to evoke emotions as strongly as live faces, possibly due to the low fidelity of the pictorial presentation.

In a new study, researchers in Aalto University and University of Helsinki found that 3D facial expressions evoke stronger emotions than their 2D counterparts. Due to the illusion of non-mediation, natural depth levels create the strongest emotional amplifications. In this experiment, depth magnitude was manipulated by varying the distance between the two cameras providing the left and right images for the 3D presentation.

– Until now, facial expressions have been studied by using 2D photographs and the results have been generalized to the real world. Yet stereoscopic images replicate reality more faithfully and thus are more valid stimuli, states doctoral candidate Jussi Hakala.

3D photographs trick the brain into thinking that the face in a 3D photograph is more real than in the 2D photograph.

– 3D photographs trick the brain into thinking that the face in a 3D photograph is more real than in the 2D photograph, explains Hakala.

Whereas the negative valence and arousal elicited by angry expressions was most significantly amplified at the most natural depth magnitude, the positive valence elicited by happy expressions was amplified in both narrowed and natural depth conditions. The research findings are relevant for virtual and augmented reality 3D displays such as Oculus Rift, indicating that 3D content must preferably provide a natural depth percept to provide emotion-evoking experiences.

– Currently, 3D is mostly used in action films to emphasize the effects, but it could be also employed to enhance the emotions conveyed by the actors, concludes Hakala.

The study was conducted by Jussi Hakala and Jari Kätsyri at the Aalto University Department of Computer Science and Jukka Häkkinen at the Institute of Behavioural Sciences, University of Helsinki. Arousal and valence data was collected from 40 participants.

The study was recently published in i-Perception.

Link to the article http://ipe.sagepub.com/content/6/6/2041669515615071

More information:
Jussi Hakala
Tel. +358505444553
[email protected]

 

  • Published:
  • Updated:
Share
URL copied!

Related news

Iiris Sundin katselee taivaalle Laajalahden lintutornilla
Research & Art, Studies Published:

When physician and AI work together, the patient benefits

Doctoral student Iiris Sundin learned in her studies that a machine learning model could make use of a physician's silent knowledge which usually is never written down. This kind of model predicts best how a given patient will react to specific treatment.
Head of Post-Award Services Jukka Hyvönen and Head of Pre-Award Services Sanna-Maija Kiviranta
Appointments, Research & Art Published:

New Service Heads at Research Services

Sanna-Maija Kiviranta has been appointed as Head of Pre-Award Services and Jukka Hyvönen has been appointed as Head of Post-Award Services. Both teams support Aalto University's researchers in research funding.
A false colour electron microscope image of the bolometer, the scale bar shows a single bacteria, indicating how small the device is
Research & Art Published:

Radiation detector with the lowest noise in the world boosts quantum work

The nanoscale radiation detector is a hundred times faster than its predecessors, and can function without interruption
The details avaiable on the page in a picture with a colourful cartoon of an antropomorphic qubit
Campus, Research & Art Published:

From quantum gateways to super-refrigerators – the quantum technology revolution arrives in Otaniemi

An exhibition uncovering the secrets of quantum technology is opening on 17 October as part of the quantum technology summit