NONLINEARITY TO DISSECT THE VISUAL SYSTEM
非线性剖析视觉系统
基本信息
- 批准号:2163918
- 负责人:
- 金额:$ 9.47万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:1993
- 资助国家:美国
- 起止时间:1993-07-01 至 1998-06-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
A series of experiments is proposed that will use various non-linearities
revealed by time-varying visual stimuli to analyze the human visual
pathway. When an input signal passes through a non-linear site, new
signal components are produced that were not present at its input. By
carefully manipulating the visual stimuli that provide the input signal
to the non-linearity, it is possible to distinguish the temporal
properties of the visual pathways before and after each non-linear site.
Three non-linearities will be studied. Each causes a burst of flicker
to be perceived differently from a steady light of the same time-averaged
intensity and chromaticity. The first, a compressive non-linearity,
causes S-cone detected flicker to change in color; the second, also a
compressive non-linearity, causes bursts of M- of L-cone detected flicker
to change in color and saturation; and the third, an expansive non-
linearity, causes bursts of M- or L-cone detected flicker to increase in
apparent brightness. The primary aim of the proposed experiments is to
use each non-linearity to dissect the early visual pathway. In some
experiments, the non-linearity will be used as a recording electrode --
to measure the temporal frequency response of the visual system before
the non-linearity; and in others it will be used as a stimulating
electrode -- to measure the temporal frequency response of the visual
system after the non-linearity. Preliminary evidence suggests that the
temporal frequency response after each compressive non-linearity is
characteristic of a chromatic pathway, while the response before each
compressive non-linearity may more closely reflect the temporal frequency
response of the receptors that the results of conventional temporal
sensitivity measurements. It is proposed that the expansive non-
linearity that affects M- and L-cone flicker is in a separate luminance
pathway. The results of the proposed experiments will provide new
insights into the postreceptoral organization of the visual system. Each
non-linear site can provide a landmark at which psychophysical and
physiological results can be compared. In the long-term, these
experiments also may have important clinical implications, since it will
be possible to use each non-linear site to localize and damage or
deterioration that results from degenerative disease.
提出了一系列实验,该实验将使用各种非线性
随时间变化的视觉刺激揭示了人类视觉
路径。 当输入信号通过非线性位点时,
产生的信号成分在其输入中不存在。 经过
仔细操纵提供输入信号的视觉刺激
对于非线性,可以区分时间
每个非线性位点之前和之后的视觉途径的性质。
将研究三个非线性。 每个都会引起闪烁
与相同时间平均的稳定光线不同的看法不同
强度和色彩。 首先,一种压缩的非线性,
导致S-Cone检测到的闪烁变化;第二,也是
压缩非线性,导致L-CONE检测到的M-爆发
改变颜色和饱和;第三,一个广阔的非 -
线性,导致M-或L-CONE检测到的闪烁突发增加
明显的亮度。 拟议实验的主要目的是
使用每种非线性来剖定早期的视觉途径。 在某些人中
实验,非线性将用作记录电极 -
测量视觉系统的时间频率响应
非线性;在其他情况下,它将用作刺激
电极 - 测量视觉的时间频率响应
非线性之后的系统。 初步证据表明
每种压缩非线性后的时间频率响应是
彩色途径的特征,而每个响应
压缩非线性可能会更紧密地反映时间频率
受体的反应是传统时间的结果
灵敏度测量。 有人提出,宽敞的非 -
影响M-和L-Cone闪烁的线性性在单独的亮度中
路径。 拟议的实验的结果将提供新的
洞悉视觉系统的后受感染组织。 每个
非线性网站可以提供心理物理和心理物理和
可以比较生理结果。 从长远来看,这些
实验也可能具有重要的临床意义,因为它将
有可能使用每个非线性站点进行本地化和损坏或
由退化性疾病导致的恶化。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

暂无数据
数据更新时间:2024-06-01
ANDREW STOCKMAN的其他基金
NONLINEARITY TO DISSECT THE VISUAL SYSTEM
非线性剖析视觉系统
- 批准号:21639192163919
- 财政年份:1993
- 资助金额:$ 9.47万$ 9.47万
- 项目类别:
NONLINEARITY TO DISSECT THE VISUAL SYSTEM
非线性剖析视觉系统
- 批准号:21639172163917
- 财政年份:1993
- 资助金额:$ 9.47万$ 9.47万
- 项目类别:
USE OF FLICKER TO ANALYZE THE VISUAL SYSTEM
使用闪烁分析视觉系统
- 批准号:61800466180046
- 财政年份:1993
- 资助金额:$ 9.47万$ 9.47万
- 项目类别:
USE OF FLICKER TO ANALYZE THE VISUAL SYSTEM
使用闪烁分析视觉系统
- 批准号:29046382904638
- 财政年份:1993
- 资助金额:$ 9.47万$ 9.47万
- 项目类别:
NONLINEARITY TO DISSECT THE VISUAL SYSTEM
非线性剖析视觉系统
- 批准号:32674033267403
- 财政年份:1993
- 资助金额:$ 9.47万$ 9.47万
- 项目类别:
NONLINEARITY TO DISSECT THE VISUAL SYSTEM
非线性剖析视觉系统
- 批准号:24443572444357
- 财政年份:1993
- 资助金额:$ 9.47万$ 9.47万
- 项目类别:
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