Article for discussion board 2-psychophysical research

Effects of Smell and Sound on Body Image Perception

Authors and Affiliations

  • Giada Brianza, Ana Tajadura-Jiménez, Emanuela Maggioni, Dario Pittera, Nadia Bianchi-Berthouze, Marianna Obrist

  • Institutions: University of Sussex (UK), Universidad Carlos III de Madrid (Spain), University College of London (UK).

Abstract

  • Body Image Perception (BIP) refers to mental representation of body appearance.

  • Distortion leads to negative health impacts (eating disorders, mental health issues).

  • Technology explores sensory stimulation (visual, tactile, auditory) to alter BIP.

  • This study examines olfactory stimuli's role in enhancing auditory effects on BIP.

Keywords

  • Body image perception, smell, sound, crossmodal correspondence, emotions.

Introduction

  • Negative body perception increases risks of eating disorders and mental health issues.

  • BIP impacts social interactions and emotional well-being.

  • Study explores olfactory feedback with auditory stimuli in HCI.

Related Work

Body Image Perception (BIP)

  • Mental representations include body image, body schema, peripersonal space.

  • Continuous updates based on sensory feedback.

Changing BIP Through Sensory Inputs

  • BIP misperceptions can be perceptual or cognitive.

  • Various sensory stimuli effectively modulate BIP.

The Unknown Effect of Smell on BIP

  • Limited rigorous study on smell compared to other senses.

  • Underexplored relationships between smell and BIP.

Research Exploration

Combined Smell and Sound Effects

Study 1: Scents and Body Shape Associations

  • Investigated associations with scents (lemon, vanilla, civet) and body shapes.

  • Methodology: olfactory stimuli through controlled delivery and assessment via Visual Analog Scales (VAS).

Study 2: Scent-Sound Interaction on BIP

  • Integrated scent and sound stimuli for multisensory BIP impacts.

  • Explored responses to scented footstep sounds.

Study Methodologies

Study 1

  • Selected pleasant (vanilla, lemon) and unpleasant scent (civet).

  • Randomized within-participant design with questionnaires.

Study 2

  • Combined sound stimuli with scents (footsteps sound manipulation during walking).

  • Adjustable 3D body avatars for self-assessment, self-report questionnaires, gait analysis.

Results

Study 1 Findings

  • Lemon linked to perceptions of thinness; vanilla to thicker shapes; civet unpleasant.

Study 2 Findings

  • Enhanced lightness sensation with lemon and high-pitched sounds; vanilla coupled with low pitch indicated heaviness.

  • Gait analysis confirmed is influenced by sensory modality integration.

Discussion

  • Smell-auditory pairing provides insights into multisensory effects on BIP.

  • Emotional enhancement noted with lemon scent fostering feelings of lightness.

  • Suggests applications in therapeutic settings for body perception disorders.

Usage Scenarios

  • Enhanced VR Environments: Create immersive experiences using multisensory feedback.

  • Wearable Technology: Integrate sensory feedback into clothing for self-perception.

  • Therapeutic Interventions: Develop interventions for eating disorders.

Limitations and Future Work

  • Include clinical samples, explore gender differences, and broaden scent stimuli investigation.

  • Employ qualitative approaches for richer understanding of individual BIP experiences.

Conclusion

  • Olfactory and auditory modalities jointly impact BIP, influencing perceptions and implications for therapeutic strategies in clinical and everyday settings.