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Size Matters: Measurement of Capsule Diameter in Cryptococcus neoformans
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Published on: February 27, 2018

Does size matter?

Rita Sousa1, Jeroen B J Smeets, Eli Brenner

  • 1Research Institute MOVE, Faculty of Human Movement Sciences, VU University, van der Boechorststraat 9, NL 1081 BT Amsterdam, The Netherlands. ritass@gmail.com

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Summary
This summary is machine-generated.

Retinal image size influences distance perception, even when object size is unknown. Participants walked further to perceived smaller objects, demonstrating size-distance effects in natural settings.

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Area of Science:

  • Psychology
  • Visual Perception
  • Human Spatial Navigation

Background:

  • Retinal image size is a known cue for distance judgment in isolated, dark conditions.
  • Previous research has not fully explored size-distance effects under naturalistic viewing conditions.

Purpose of the Study:

  • To investigate if retinal image size influences distance judgments in natural environments.
  • To determine if perceived object size affects walking distance to a target.

Main Methods:

  • Participants were asked to walk towards a target cube on a beach while blindfolded.
  • Cubes of different sizes (15 cm vs. 20 cm) were presented at identical locations across trials.
  • Participants were unaware of the size variations and did not have close-up views of the cube.

Main Results:

  • On average, participants walked approximately 1 meter further after viewing the smaller (15 cm) cube compared to the larger (20 cm) cube.
  • This suggests that perceived size, influenced by retinal image size, affected their distance estimations.

Conclusions:

  • Retinal image size plays a significant role in distance perception and spatial navigation, even in natural settings.
  • The study confirms that perceived object size influences motor behavior, specifically walking distance, in real-world scenarios.