TEMPORAL CODES AND CORTICOCORTICAL COMMUNICATION
时间编码和皮质通讯
基本信息
- 批准号:6393564
- 负责人:
- 金额:$ 19.31万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:1998
- 资助国家:美国
- 起止时间:1998-07-01 至 2003-04-30
- 项目状态:已结题
- 来源:
- 关键词:Macaca mulatta attention brain disorders electrophysiology evoked potentials form /pattern perception magnetic resonance imaging microelectrodes neural information processing neurons neurophysiology occipital lobe /cortex saccades single cell analysis space perception temporal lobe /cortex visual cortex visual fields visual stimulus
项目摘要
The broad aim of the proposed studies is to define the role of temporal
codes in corticocortical information processing. Current models of
coincidence detection and temporal integration of average firing rates
are directly examined with an experimental approach. Pattern
recognition and directing attention are chosen as related cortical
functions which are likely to select for different processing
strategies. Pattern recognition which requires fast, parallel and
exhaustive, binding of multiple features within and across many scales
is likely to depend on the fast timing schemes identified in coincidence
detection models. Directing attention, on the other hand, reflects the
deploying of a narrow information channel. This process is likely to
depend on slower, serial search schemes that are well supported by rate
coding strategies that mark more highly active neural sub-populations.
Specific experimental methods are proposed to test the utilization of
these strategies by neurons in the awake animal engaged in simple but
well-defined behavioral tasks.
The significance of these studies is to build our understanding of the
nature of temporal processing in cortical dynamics. Knowledge of the
mechanisms of temporal integration is the next crucial step in
approaching the varied problems of brain injury. Increasing evidence
points to the disruption of temporal processing as a fundamental
mechanism underlying developmental and acquired cognitive disabilities.
Morever, the first hints of therapeutic approaches based on models of
temporal processing suggest that further detailed knowledge of the
timing of information flow in the cortex will assist the efforts to
improve the lives of patients with dyslexia, head trauma and stroke.
Ultimately, the brain is organized with parallel and vertical
subcortical connections (limbic, striatal, thalamocortical) as well as
the corticocortical connections emphasized here. The studies proposed
will seek to frame the understanding of corticocortical interactions in
a context that will support further studies of thalamocortical
integration. Building out from this framework will enlarge the possible
scope of significance for the treatment of brain disorders.
拟议研究的主要目的是确定时间的作用
项目成果
期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Keith P. Purpura其他文献
Système et procédés pour l'activation multi-site du thalamus
丘脑多部位激活系统及程序
- DOI:
- 发表时间:
2014 - 期刊:
- 影响因子:0
- 作者:
Nicholas D. Schiff;Keith P. Purpura;Jonathan L. Baker;Jae - 通讯作者:
Jae
Keith P. Purpura的其他文献
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{{ truncateString('Keith P. Purpura', 18)}}的其他基金
Role of fixational eye movements and saccades in processing spatial information in V1-V2-V4 networks
注视眼运动和扫视在处理 V1-V2-V4 网络空间信息中的作用
- 批准号:
10503661 - 财政年份:2022
- 资助金额:
$ 19.31万 - 项目类别:
Role of fixational eye movements and saccades in processing spatial information in V1-V2-V4 networks
注视眼运动和扫视在处理 V1-V2-V4 网络空间信息中的作用
- 批准号:
10685318 - 财政年份:2022
- 资助金额:
$ 19.31万 - 项目类别:
Processing of spatial information in V1 through fixational eye movements
通过注视眼球运动处理 V1 中的空间信息
- 批准号:
9374079 - 财政年份:2017
- 资助金额:
$ 19.31万 - 项目类别:
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