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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2009.6
- 수록면
- 119 - 125 (7page)
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초록· 키워드
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Neurons in areas 17 and 18 of the visual cortex are important in processing information relating to the speed or spatial properties of a moving object. The effects of velocity on spatial frequency and direction tuning properties of neurons (n=260) of areas 17/18 were studied in three anaesthetized and paralyzed cats. The visual stimuli used were drifting sinusoidal gratings with varied spatial frequencies, directions and velocities. We confirmed that the spatial frequency tuning of neurons of areas 17 and 18 were independent of velocity. However, we also found that optimal spatial frequency was changed from low to high and spatial frequency bandwidth became broader in some neurons in area 17 when velocity was decreased. The optimal temporal frequency was not constant over a range of velocities in the case of these cells. This implies that these cells were affected not only by the velocity but also by the spatial frequency of the stimulus. We also found that optimal direction was changed by more than 30 degres in the case of 50 cells (19.2%) and directionality was changed as well over a range of velocities.
목차
Materials and Methods
Results
Discussion
Acknowledgments
References
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UCI(KEPA) : I410-ECN-0101-2009-510-018537646