英语翻译• In macaque V1,the range of half-magnitude orient

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英语翻译
• In macaque V1,the range of half-magnitude orientation bandwidths among
cells is very large:From 8 degrees to the most narrowly tuned.At the other
end there were cells with no orientation selectivity at all.(see De Valois
et al.,1982b,p.535 and 541) reports the following statistics for the orientation bandwidth:mean = 65 degrees,median = 42 degrees,mode =
30 degrees.However they point out that others have reported significantly
larger numbers.For example () reports a 71 % from max median bandwidth
of 38.5 degrees.This would correspond to a median half magnitude bandwidth of 66 degrees.The median bandwidth of simple cells in the cat is a bit smaller than in the macaque,with a typical median half magnitude orientation bandwidth of 30 degrees (see De Valois et al.,1982b,p.535 and 541).
• In macaque V1 the peak frequencies range from as low as 0.5 cycles perdegree of visual angle,to as large as 15 cycles per degree of visual angle.Mean values are 2.7 cycles per degree for cells mapping into the parafovealand 4.25 cycles per degree for cells mapping into the fovea.• The spatial frequency bandwidth (in octaves) tends to be a bit larger forcells with low peak frequency than for cells with large peak frequency.Forexample,the median half magnitude bandwidth of cells tuned to frequencieshigher than 5 cycles/degree is 1.2 octaves,whereas the median forcells tuned to frequencies smaller than 2 cycles/degree is 1.7 octaves.(seeDe Valois et al.,1982a,p.552).
1个回答 分类:英语 2014-10-14

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•在猕猴V1,其中一半大小的方向带宽范围
细胞是非常大的:从8度到最狭义的调整.在其他
到底有没有在所有的方向选择性细胞.(见德瓦卢瓦
等人.,1982b,p.535和541)报告下列统计为取向的带宽:平均65度,平均42度,模式=
30度.但是他们指出,其他的报道明显
较大的数字.例如()的报告从最大中值带宽71%
38.5度.这相当于平均一半大小的带宽为66度.在猫的简单细胞的平均带宽比在猕猴小一点,一个典型的中值一半大小的方向带宽的30度(见德瓦卢瓦等人.,1982b,535页,541).
•在猕猴V1峰的频率范围从0.5周期的视角perdegree低,为15周/度的视角大.平均值为细胞周期每度2.7映射到parafovealand 4.25周期每度映射到凹细胞.•空间频率带宽(在八度)虽然往往是大一点的低峰值频率比大的峰值频率的细胞.例如,中位数的一半大小的带宽调谐到frequencieshigher细胞比5周期/度为1.2度,而中位数虽然调谐频率小于2周期/度是1.7个八度音阶.(芝麻瓦卢瓦等人.,1982年,552页).
 
 
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