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Being Hungry Affects Oral Size Perception.

Parker Crutchfield1, Vanessa Pazdernik2, Gina Hansen3

  • 1Western Michigan University Homer Stryker M.D., School of Medicine, Kalamazoo, MI, USA; Missouri School of Dentistry and Oral Health, A.T. Still University, Kirksville, MO, USA.

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Summary
This summary is machine-generated.

Hunger influences how we perceive object size within the mouth. Being hungry reduces the tendency to underestimate oral object size, suggesting hunger modifies sensory predictions.

Keywords:
hungeroral perceptionpredictive coding

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Sensory Perception

Background:

  • Oral size perception is often inaccurate, with debate on whether it over- or underestimates object size.
  • Hunger is known to influence oral size perception, but the precise effects require further investigation.

Purpose of the Study:

  • To investigate the specific impact of hunger on the perception of object size within the oral cavity.
  • To determine if hunger alters the tendency to underestimate or overestimate intraoral object sizes.

Main Methods:

  • Participants' perception of intraoral object size was assessed under both hungry and sated conditions.
  • Statistical analyses were employed to evaluate the significance and direction of hunger's effect.

Main Results:

  • Hunger exerted a small but statistically significant influence on oral size perception.
  • Both hungry and sated individuals tended to underestimate object size, but this underestimation was significantly less pronounced in hungry participants.
  • The observed effects were consistent regardless of the order or number of size assessments.

Conclusions:

  • Hunger modulates oral size perception, specifically reducing the degree of size underestimation.
  • A novel Bayesian predictive hierarchy model is proposed, suggesting hunger alters prior assumptions within this perceptual system.