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Developmental changes in shortening of pro-saccade reaction time while maintaining neck flexion position

Kenji Kunita1, Katsuo Fujiwara2, Naoe Kiyota3

  • 1Department of Sports Instruction, Faculty of Sports and Human, Sapporo International University, 4-1-4-1 Kiyota, Kiyota-ku, Sapporo, 004-8602, Japan. k-kunita@ts.siu.ac.jp.

Journal of Physiological Anthropology
|January 12, 2018
PubMed

Insights

Neck flexion shortens pro-saccade reaction time in children around 11 years and older. This effect, indicating brain activation, becomes more sustained with age, showing developmental changes in motor control.

Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Human Motor Control

Background:

  • Investigated developmental changes in pro-saccade reaction time.
  • Examined the effect of maintaining neck flexion on reaction time.

Purpose of the Study:

  • To understand how neck flexion influences reaction time during pro-saccade tasks across different age groups.
  • To identify the developmental onset and duration of neck flexion's effect on reaction time.

Main Methods:

  • 135 children (3-14 years) and 29 young adults (19-23 years) participated.
  • Pro-saccade reaction tasks were performed in both neck rest and neck flexion positions.
  • Reaction times were measured over 30-second periods and averaged in 10-second intervals.

Main Results:

  • Reaction time was longer in younger children (3-4 years) compared to older groups.
  • Neck flexion's effect on shortening reaction time emerged around 11-12 years of age.
  • This shortening effect was sustained longer in older age groups (11-14 years and adults).

Conclusions:

  • Brain activation associated with neck flexion, leading to shorter pro-saccade reaction times, is evident from approximately 11 years onwards.
  • This activation is sustained for longer durations in older children and adults.
  • Developmental maturation influences the integration of neck proprioception and oculomotor control.
Abstract

Keywords:
Brain activationDevelopmentNeck flexionPro-saccade reaction time

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