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Human physiological benefits of viewing nature: EEG responses to exact and statistical fractal patterns.

Hagerall, Caroline; Laike, Thorbjörn LU ; Taylor, Richard; Küller, Marianne LU and Marcheschi, Elizabeth LU (2015) In Nonlinear Dynamics, Psychology, and Life Sciences 19(1). p.1-12
Abstract
Psychological and physiological benefits of viewing nature have been extensively studied for some time. More recently it has been suggested that some of these positive effects can be explained by nature's fractal properties. Virtually all studies on human responses to fractals have used stimuli that represent the specific form of fractal geometry found in nature, i.e. statistical fractals, as opposed to fractal patterns which repeat exactly at different scales. This raises the question of whether human responses like preference and relaxation are being driven by fractal geometry in general or by the specific form of fractal geometry found in nature. In this study we consider both types of fractals (statistical and exact) and morph one type... (More)
Psychological and physiological benefits of viewing nature have been extensively studied for some time. More recently it has been suggested that some of these positive effects can be explained by nature's fractal properties. Virtually all studies on human responses to fractals have used stimuli that represent the specific form of fractal geometry found in nature, i.e. statistical fractals, as opposed to fractal patterns which repeat exactly at different scales. This raises the question of whether human responses like preference and relaxation are being driven by fractal geometry in general or by the specific form of fractal geometry found in nature. In this study we consider both types of fractals (statistical and exact) and morph one type into the other. Based on the Koch curve, nine visual stimuli were produced in which curves of three different fractal dimensions evolve gradually from an exact to a statistical fractal. The patterns were shown for one minute each to thirty-five subjects while qEEG was continuously recorded. The results showed that the responses to statistical and exact fractals differ, and that the natural form of the fractal is important for inducing alpha responses, an indicator of a wakefully relaxed state and internalized attention. (Less)
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Contribution to journal
publication status
published
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in
Nonlinear Dynamics, Psychology, and Life Sciences
volume
19
issue
1
pages
1 - 12
publisher
Society for Chaos Theory in Psychology & Life Sciences
external identifiers
  • pmid:25575556
  • wos:000347973100001
  • scopus:84940108838
ISSN
1090-0578
language
English
LU publication?
yes
id
5d3c43e8-f0f6-44a3-bd21-2b263b5c5527 (old id 5040869)
alternative location
http://pages.uoregon.edu/msiuo/taylor/art/art1901-1LITE.pdf
date added to LUP
2015-10-09 14:02:34
date last changed
2017-09-10 03:04:11
@article{5d3c43e8-f0f6-44a3-bd21-2b263b5c5527,
  abstract     = {Psychological and physiological benefits of viewing nature have been extensively studied for some time. More recently it has been suggested that some of these positive effects can be explained by nature's fractal properties. Virtually all studies on human responses to fractals have used stimuli that represent the specific form of fractal geometry found in nature, i.e. statistical fractals, as opposed to fractal patterns which repeat exactly at different scales. This raises the question of whether human responses like preference and relaxation are being driven by fractal geometry in general or by the specific form of fractal geometry found in nature. In this study we consider both types of fractals (statistical and exact) and morph one type into the other. Based on the Koch curve, nine visual stimuli were produced in which curves of three different fractal dimensions evolve gradually from an exact to a statistical fractal. The patterns were shown for one minute each to thirty-five subjects while qEEG was continuously recorded. The results showed that the responses to statistical and exact fractals differ, and that the natural form of the fractal is important for inducing alpha responses, an indicator of a wakefully relaxed state and internalized attention.},
  author       = {Hagerall, Caroline and Laike, Thorbjörn and Taylor, Richard and Küller, Marianne and Marcheschi, Elizabeth},
  issn         = {1090-0578},
  language     = {eng},
  number       = {1},
  pages        = {1--12},
  publisher    = {Society for Chaos Theory in Psychology & Life Sciences},
  series       = {Nonlinear Dynamics, Psychology, and Life Sciences},
  title        = {Human physiological benefits of viewing nature: EEG responses to exact and statistical fractal patterns.},
  volume       = {19},
  year         = {2015},
}