Development of asymmetrical cortical responses to radial expansion/contraction(Summary of Awarded Presentation at the 25th Annual Meeting)

• SHIRAI Nobu

  Chuo University:Japan Society for the Promotion of Science

• BIRTLES Deirdre

  University College London:University of Oxford

• WATTAM BELL John

  University College London

• YAMAGUCHI K Masami

  Chuo University:Japan Science and Technology Agency

• KANAZAWA So

  Shukutoku University

• ATKINSON Janette

  University College London

• BRADDICK Oliver

  University of Oxford

抄録

We report the development of cortical responses (steady-state visual evoked potentials: VEPs) to radial expansion/contraction. Forty-four 3-4-month-olds and 9 adults viewed moving dots which cyclically (2.085 Hz) alternated between radial expansion (or contraction) and random directional motion. The first harmonic (F1) response in the VEPs must arise from global-motion- sensitive mechanisms. The results indicated that the F1 amplitudes for contraction were significantly larger than those for expansion for the 4-month-olds and the adults but not for the 3-month-olds. These results suggest that the human cortical motion mechanisms have an asymmetrical sensitivity for radial expansion/contraction which develops at around 3 to 4 months of age.

収録刊行物

• 基礎心理学研究

  基礎心理学研究 25 (2), 275-276, 2007

  日本基礎心理学会

キーワード

• Infant vision
• cortical processing
• radial expansion
• contraction
• visual evoked potentials

詳細情報

• CRID: 1390282680736018560
• NII論文ID: 110006242630
• DOI: 10.14947/psychono.kj00004574163
• ISSN: 21887977
• ISSN: 02877651
• 本文言語コード: en
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可