通过深度神经网络模型,基于中心周围相似性的生物包围抑制概括
Xu Pan1, Annie DeForge2,3, Odelia Schwartz1
1Department of Computer Science, University of Miami, Coral Gables, FL, United States of America.
PLoS computational biology
|September 22, 2023
概括
深度神经网络模拟视觉环境效应,显示背景如何影响感知. 这些模型突出了突出的刺激,并抑制了类似的环境,为更高视觉皮层提供了新的见解.
科学领域:
- 神经科学是一个神经科学.
- 计算机视觉 计算机视觉
- 人工智能的人工智能
背景情况:
- 背景显著影响感官感知,特别是在视觉上.
- 初级视觉皮层 (V1) 模型经常使用围绕效果的分割正常化.
- 在V1以外的更高视觉区域的周围影响仍然不太了解,特别是对于复杂的刺激.
研究的目的:
- 通过使用深度神经网络,在更高的视觉区域研究上下文神经环境效应.
- 将V1以外的环境效应与复杂刺激的理解概括.
- 开发和使用可视化技术来分析神经网络对周围刺激的反应.
主要方法:
- 使用feedforward深卷积神经网络 (CNN).使用feedforward深卷积神经网络.
- 开发了一种基于梯度的技术来可视化刺激和抑制的环境.
- 分析了网络对不同中心和周围刺激的反应.
主要成果:
- CNNs复制了V1中看到的关键环绕效应,区分突出的中心刺激.
- 当中心和周围刺激相似时,网络显示抑制.
- 在更深层中,抑制的环境动态地适应了中心刺激的变化.
- 未训练的网络没有表现出以中心-周围相似性为基础的抑制.
结论:
- 深度神经网络为理解复杂视觉处理中的环境效应提供了有价值的框架.
- 这些发现为高视觉皮层的围绕机制提供了可测试的假设.
- 视觉化方法可以帮助未来的生物实验设计研究视觉上下文.
相关概念视频
Difference from Background: Limit of Detection
6.4K
The limit of detection (LOD) is the smallest amount of analyte that can be distinguished from the background noise. The LOD value corresponds to the concentration at which the analyte signal is three times larger than the standard deviation of the blank signal. Below this value, the analyte signal cannot be differentiated from the background noise. It is calculated by dividing the calibration slope by 3 times the standard deviation of the blank signals.
The LOD indicates the presence or absence...
The LOD indicates the presence or absence...
6.4K
Neural Circuits
1.3K
Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
1.3K
Generalization, Discrimination, and Extinction
597
Generalization, discrimination, and extinction are key concepts in operant conditioning that influence how behaviors are learned and maintained.
Generalization occurs when a behavior reinforced in one context is performed in similar situations. For instance, a student who studies diligently for calculus and receives excellent grades might apply the same study habits to psychology and history, expecting similar results. Generalization shows how learning in one setting can influence behavior in...
Generalization occurs when a behavior reinforced in one context is performed in similar situations. For instance, a student who studies diligently for calculus and receives excellent grades might apply the same study habits to psychology and history, expecting similar results. Generalization shows how learning in one setting can influence behavior in...
597
Neural Regulation
39.5K
Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
39.5K


