CYCLOPEAN AND MONOCULAR MOTION PROCESSING
CYCLOPEAN AND MONOCULAR MOTION PROCESSING
批准号:
3262600
负责人:
DAVID G STORK
金额:
$2.53万
依托单位国家:
美国
项目类别:
财政年份:
1985
资助国家:
美国
项目状态:
已结题
起止时间:
1985-08-01 至 1987-07-31
中文摘要
环孢菌素(cycl.)运动(如在Julesz电影)将被研究
在冲突、非冲突和随机单眼条件下,
(mono.)运动,以确定性能的单声道。比诺克。运动交互,
如相对角度、速度和空间的调谐曲线所描述的
频域 研究结果将对今后的理论研究具有重要意义。
单核细胞增多症比诺克。信息处理,视差单位的神经生理学,
和立体盲病理学。 大多数实验采用一种新的循环。
刺激:一个正弦视差光栅垂直移动,在额叶
平面(例如,一个水平的周期。光栅向上移动)形成的mono。
以不同角度和速度移动的随机点的场(例如,点
快速向右移动)。 或者,单核细胞。可以选择运动,
不冲突(即,与周期光栅相同的垂直速度),或暂时
随机(例如,视频“雪”)。 关键实验包括:
1)周期运动后效(CMAE):S将适应周期光栅
由时间随机的单目场形成的垂直移动。 测试
将在各种SOA中找到使CMAE无效所需的速度,以确定
循环响应的衰减常数。
2)CMAE与单声道。不同方向和速度的运动:比较经验
1结果将显示阈上单声道的强度和调谐。比诺克。
运动交互
3)新的偶然后效:使用McCulloch范式,偶然AE
将垂直循环运动与水平单声道联系起来。将寻求动议。
测试刺激将是a)移动点的平坦图案,从而
产生周期运动的AE,或B)漂移周期光栅,从而
产生单核细胞增多症。议案
4)用于周期光栅运动检测的视差阈值:使用方法
在调整的过程中,将为各种单声道找到视差阈值。
确定概率求和或抑制是否起作用的条件
之间的关系。还有比诺克系统.
5)循环运动子通道独立性:视差阈值(实验4)
反相位周期光栅将被发现。视差比2:1
(反相:漂移)将建议独立的循环运动子通道,
如Sekloun所示的单眼。
6)相干运动的条件:如果是单声道。和循环。垂直速度是
相等,图案将“连贯地”移动-作为一个明显的单一视觉
实体:对于这样的速度差异很大,它不会。 这个范围将是
发现使用2-choice楼梯。
7)立体运动盲:立体运动的近似发生率
将确定盲性并与标准(静态)进行比较
立体视盲
英文摘要
Cyclopean (cycl.) motion (as in a Julesz cinematogram) will be studied
under conditions of conflicting, nonconflicting, and random monocular
(mono.) motion to determine properties of mono.-binoc. motion interaction,
as described by tuning curves in the relative angle, speed, and spatial
frequency domains. Results will have great import on theories of
mono.-binoc. information processing, neurophysiology of disparity units,
and stereoblindness pathology. Most experiments employ a novel cycl.
stimulus: a sinusoidal disparity grating moving vertically in the frontal
plane (eg, a horizontal cycl. grating moving upward) formed from mono.
fields of random dots moving at a different angle and speed (eg, dots
moving quickly to the right). Alternatively, mono. motion can be chosen to
be nonconflicting (ie, same vertical speed as cycl. grating), or temporally
random (eg, video "snow"). Key experiments include:
1) Cycl. motion aftereffect (CMAE): S's will adapt to a cycl. grating
moving vertically formed from temporally random monocular fields. The test
speed needed to null the CMAE will be found at various SOA's to determine
the decay constant of cycl. response.
2) CMAE with mono. motion in various directions and speeds: Comparing Exp
1 results will show the strength and tunings of suprathreshold mono.-binoc.
motion interaction.
3) New contingent aftereffect: Using a McCulloch paradigm, a contingent AE
linking vertical cycl. motion to horizontal mono. motion will be sought.
The test stimuli will be a) a flat pattern of moving dots, thereby
producing an AE of cycl. motion, or b) a drifting cycl. grating, thereby
producing an AE of mono. motion.
4) Disparity thresholds for cycl. grating motion detection: Using method
of adjustment, disparity thresholds will be found for various mono.
conditions to determine whether probability summation or inhibition acts
between mono. and binoc. systems.
5) Cycl. motion subchannel independence: Disparity thresholds (Exp 4) for
counterphase cycl. gratings will be found. A ratio of disparities 2:1
(counterphase:drifting) will suggest independent cycl. motion subchannels,
as shown monocularly by Sekuler.
6) Conditions for coherent motion: If mono. and cycl. vertical speeds are
equal, the pattern will move "coherently"--as an apparently single visual
entity: for large difference in such speeds, it won't. This range will be
found using a 2-choice staircase.
7) Stereomotion blindness: The approximate incidence of stereomotion
blindness will be determined and compared with that of standard (static)
stereoblindness.
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CYCLOPEAN AND MONOCULAR MOTION PROCESSING
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批准号:3262601
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项目类别:
-
资助金额:$3.76万
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财政年份:1985
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负责人:DAVID G STORK
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依托单位:
海外基金