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Related Experiment Video

Updated: Mar 27, 2026

Using the Threat Probability Task to Assess Anxiety and Fear During Uncertain and Certain Threat
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Can Hospital Form Trigger Fear Response?

Debajyoti Pati1, Michael O'Boyle2, Jiancheng Hou2

  • 1College of Human Sciences, Texas Tech University, Lubbock, TX, USA d.pati@ttu.edu.

HERD
|January 10, 2016
PubMed
Summary
This summary is machine-generated.

Healthcare environments with sharp contours trigger higher amygdala activation, suggesting a subconscious threat response. Conversely, curved contours in hospital interiors and exteriors also elicit amygdala responses, impacting precognitive perception.

Keywords:
acute carebuilt formevidence-based designfear responseneuro architectureneuro science

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Area of Science:

  • Cognitive Neuroscience
  • Environmental Psychology
  • Neuroimaging

Background:

  • Humans exhibit a preference for curved over sharp-angled contours.
  • This preference may stem from an implicit perception of threat associated with sharp objects.

Purpose of the Study:

  • To investigate if built healthcare settings with curved versus sharp contours evoke distinct amygdala activation patterns.
  • To explore the behavioral responses associated with these visual stimuli in healthy adults.

Main Methods:

  • Within-subject experimental design with 36 participants across three age groups.
  • Functional magnetic resonance imaging (fMRI) to measure amygdala activation.
  • Collection of preference data (like/dislike) during image exposure.

Main Results:

  • Sharp contours in landscapes and healthcare objects led to higher amygdala activation.
  • Curved contours in hospital interiors and exteriors also showed significant amygdala activation.
  • These effects occurred during precognitive stages of perception.

Conclusions:

  • The form of hospital environments significantly influences subconscious fear responses.
  • The long-term impact of these initial precognitive impressions on patient experience remains an open question.