Construction of invariant shape selectivity in the ventral visual stream
Construction of invariant shape selectivity in the ventral visual stream
批准号:
8204991
负责人:
James J DiCarlo
金额:
$39.03万
依托单位国家:
美国
项目类别:
财政年份:
2004
资助国家:
美国
项目状态:
已结题
起止时间:
2004-04-01 至 2014-11-30
关键词:
AddressAdultAnteriorAreaBrainCategoriesChronicComputer SimulationDevelopmentElectrodesEyeFundingGoalsHumanImageInferiorLeadLearningLightingLongitudinal StudiesMethodsMonkeysMovementNeuronsNeurosciencesPatternPersonal SatisfactionPopulationPopulation DynamicsPositioning AttributePrimatesProblem SolvingProcessPropertyPsychophysicsResearchRetinalRoleSamplingSeriesShapesStagingStreamTemporal LobeTestingTimeVisualVisual attentionVisual system structureWorkarea V4awakecomparativeexperienceextrastriate visual cortexfeedingneuronal patterningneurophysiologynonhuman primateobject recognitionpopulation basedresearch studyvisual informationvisual stimulus
中文摘要
项目摘要
感知神经科学的一个基本目标是理解神经元的表征,
是我们感知、识别和记忆视觉物体的非凡能力的基础。在人类中
和非人类灵长类动物,这些表征是通过处理沿着腹侧
视觉流,并通过其最高水平的神经元活动模式传达-猴子
下颞叶皮层(IT)。腹流解决的关键计算问题是,
产生视觉图像的IT神经元表示,传达对对象身份的选择性
和类别,具有对对象位置、大小、姿态、照明
和杂乱。事实上,尽管腹流的形状选择性特性已经得到了
尽管我们做了很多研究,但我们对构建这种耐受性的机制知之甚少。的目标
这一建议是对腹侧视觉流如何构建
宽容(“不变”)的视觉形状选择性,是我们物体识别能力的基础。
在目标1中,我们问:自然获得的时间连续经验是否“指导”了
腹侧流耐受性的形成我们最近发现,对IT的容忍度
神经元的形状选择性可以通过改变时间上的连续性来强烈和快速地塑造,
无监督的视觉体验在这个目标中,我们将使用一系列密切相关的视觉
体验操作,以系统地测试和表征这种可塑性在
位置、大小和姿态公差学习。这将阐明它在指导成人视觉方面的作用
对象表示,并为长期研究这些强大的
在早期开发期间组装表示。
在目标2中,我们将采用一种比较的方法来询问对象信息如何在
两个腹侧流区(V4与IT)?使用同样的猴子,同样的任务,同样的视觉效果,
刺激,我们将使用神经元群体的方法来问:如何耐受的IT
从V4表示更改表示?IT中是否保留了V4形状选择性
代表?从V4到IT,视觉表示的稀疏性是否发生了变化?如何
容差形状选择性在真实的时间内演化?总之,这些实验将告知一个中央
问题:“IT中的宽容对象选择性是如何从早期的视觉表示中建立起来的?“,以及
这些结果将为腹侧视觉流的计算模型提供强有力的约束
并引导我们更普遍地理解皮层信息转换。
英文摘要
Project Summary
A fundamental goal of perceptual neuroscience is to understand the neuronal representations that
underlie our remarkable ability to perceive, recognize, and remember visual objects. In humans
and non-human primates, these representations are produced by processing along the ventral
visual stream, and conveyed by patterns of neuronal activity in its highest level -- the monkey
inferior temporal cortex (IT). The key computational problem the ventral stream solves is that it
produces an IT neuronal representation of visual images that conveys selectivity for object identity
and category, with tolerance ("invariance") to changes in object position, size, pose, illumination
and clutter. Indeed, although the shape selectivity properties of the ventral stream have received
much study, we know very little about the mechanisms that construct that tolerance. The goal of
this proposal is a mechanistic understanding of how the ventral visual stream constructs the
tolerant ("invariant") visual shape selectivity that underlies our object recognition abilities.
In Aim 1 we ask: does naturally-acquired temporally contiguous experience "instruct" the
formation of tolerance in the ventral stream? We have recently discovered that the tolerance of IT
neuronal shape selectivity can be strongly and rapidly sculpted by altered temporal contiguity of
unsupervised visual object experience. In this aim, we will use a series of closely-related visual
experience manipulations to systematically test and characterize the role of this plasticity in
position, size, and pose tolerance learning. This will illuminate its role in instructing adult visual
object representation, and set the stage for longer-term studies of how these powerful
representations are assembled during early development.
In Aim 2 we will take a comparative approach to ask how object information is transformed across
two ventral stream areas (V4 vs. IT)? Using the same monkeys, same task, and same visual
stimuli, we will use neuronal population methods to ask: How is the tolerance of the IT
representation changed from the V4 representation? Is V4 shape selectivity preserved in the IT
representation? Does the sparseness of visual representation change from V4 to IT? How does
tolerant shape selectivity evolve in real time? Together, these experiments will inform a central
question: "How is the tolerant object selectivity in IT built from earlier visual representation?", and
the results will provide strong constraints on computational models of the ventral visual stream
and guide our understanding of cortical information transformation more generally.
期刊论文(0)
专著(0)
科研奖励(0)
会议论文
Computationally Enabled Integrative Neuroscience
-
批准号:10237871
-
项目类别:
-
资助金额:$23.36万
-
财政年份:2019
-
负责人:James J DiCarlo
-
依托单位:
Computationally Enabled Integrative Neuroscience
-
批准号:10449137
-
项目类别:
-
资助金额:$25.93万
-
财政年份:2019
-
负责人:James J DiCarlo
-
依托单位:
Post-natal development of high-level visual representation in primates
-
批准号:9316254
-
项目类别:
-
资助金额:$19.34万
-
财政年份:2017
-
负责人:James J DiCarlo
-
依托单位:
Time delimited neural silencing to dissect the basis of visual object perception
-
批准号:8427417
-
项目类别:
-
资助金额:$21.16万
-
财政年份:2013
-
负责人:James J DiCarlo
-
依托单位:
Time delimited neural silencing to dissect the basis of visual object perception
-
批准号:8609040
-
项目类别:
-
资助金额:$19.11万
-
财政年份:2013
-
负责人:James J DiCarlo
-
依托单位:
Visual object processing in the inferotemporal cortex
-
批准号:7198019
-
项目类别:
-
资助金额:$30.42万
-
财政年份:2004
-
负责人:James J DiCarlo
-
依托单位:
Construction of invariant shape selectivity in the ventral visual stream
-
批准号:8415897
-
项目类别:
-
资助金额:$37.04万
-
财政年份:2004
-
负责人:James J DiCarlo
-
依托单位:
Construction of invariant shape selectivity in the ventral visual stream
-
批准号:7780515
-
项目类别:
-
资助金额:$40.73万
-
财政年份:2004
-
负责人:James J DiCarlo
-
依托单位:
Visual object processing in the inferotemporal cortex
-
批准号:7404431
-
项目类别:
-
资助金额:$29.9万
-
财政年份:2004
-
负责人:James J DiCarlo
-
依托单位:
Construction of invariant shape selectivity in the ventral visual stream
-
批准号:7995177
-
项目类别:
-
资助金额:$39.07万
-
财政年份:2004
-
负责人:James J DiCarlo
-
依托单位:
The role of inferior temporal cortex in core visual object recognition
-
批准号:9131854
-
项目类别:
-
资助金额:$39.0万
-
财政年份:2004
-
负责人:James J DiCarlo
-
依托单位:
Visual object processing in the inferotemporal cortex
-
批准号:7905292
-
项目类别:
-
资助金额:$7.43万
-
财政年份:2004
-
负责人:James J DiCarlo
-
依托单位:
Visual object processing in the inferotemporal cortex
-
批准号:7032925
-
项目类别:
-
资助金额:$30.88万
-
财政年份:2004
-
负责人:James J DiCarlo
-
依托单位:
Visual object processing in the inferotemporal cortex
-
批准号:6876488
-
项目类别:
-
资助金额:$32.0万
-
财政年份:2004
-
负责人:James J DiCarlo
-
依托单位:
Visual object processing in the inferotemporal cortex
-
批准号:6778021
-
项目类别:
-
资助金额:$31.64万
-
财政年份:2004
-
负责人:James J DiCarlo
-
依托单位:
Core-Vision Processes
-
批准号:8735150
-
项目类别:
-
资助金额:$57.69万
-
财政年份:1997
-
负责人:James J DiCarlo
-
依托单位:
CORE - Vision Processies
-
批准号:7642358
-
项目类别:
-
资助金额:$65.18万
-
财政年份:1997
-
负责人:James J DiCarlo
-
依托单位:
Machine Shop
-
批准号:10428503
-
项目类别:
-
资助金额:$21.99万
-
财政年份:1997
-
负责人:James J DiCarlo
-
依托单位:
CORE - Vision Processies
-
批准号:8288199
-
项目类别:
-
资助金额:$69.15万
-
财政年份:1997
-
负责人:James J DiCarlo
-
依托单位:
Core-Vision Processes
-
批准号:8906858
-
项目类别:
-
资助金额:$57.69万
-
财政年份:1997
-
负责人:James J DiCarlo
-
依托单位:
海外基金