一个定量模型的集体感知作为在特征空间的总和激活功能空间
Maria M Robinson1, Timothy F Brady2
1Psychology Department, University of California, San Diego, La Jolla, CA, USA. mrobinson@ucsd.edu.
Nature human behaviour
|July 4, 2023
概括
我们开发了一个集体感知的计算模型,通过总结激活信号来总结复杂的场景. 这个模型成功地预测了视觉记忆任务中的个体差异,统一了个人和整体记忆的模型.
科学领域:
- 认知科学 认知科学
- 计算神经科学是一种神经科学.
- 心理学 心理学 心理学
背景情况:
- 集体感知对于总结复杂的视觉场景至关重要,缺乏强大的计算模型.
- 现有的模型并没有正式将单个项目内存与集体表示联系起来.
研究的目的:
- 根据激活信号的总和,开发和测试集体感知的计算模型.
- 为了正式连接单个项目记忆的模型与集体表示.
- 预测视觉记忆任务中的个人间和个人内差异.
主要方法:
- 开发了一种新的计算模型,其中集体表示是个别项目激活信号的总和.
- 设计了五个实验,比较拟议的集合模型与替代方案.
- 利用单个项目视觉记忆任务的性能来生成集体任务的预测.
主要成果:
- 基于最小假设的拟议模型成功预测了集成连续报告任务的性能.
- 该模型准确地捕获了视觉记忆中的个体间和个体内变化.
- 在个体物品记忆和集体感知模型之间建立了正式的联系.
结论:
- 开发的模型通过统一个人和集体记忆过程,提供了集体感知的正式解释.
- 这种方法为构建和比较各种存储系统的计算模型提供了一个框架.
- 这些发现凸显了认知科学中自上而下的建模方法的实用性.
相关概念视频
Perceiving Loudness, Pitch, and Location
241
The human brain perceives pitch through two primary mechanisms reflected in place theory and frequency theory. Each mechanism describes how sound waves are interpreted as specific pitches by the brain, offering insights into the intricate processes of auditory perception.
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by...
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by...
241
Perception of Sound Waves
4.5K
The human ear is not equally sensitive to all frequencies in the audible range. It may perceive sound waves with the same pressure but different frequencies as having different loudness. Moreover, the perception of sound waves depends on the health of an individual's ears, which decays with age. The health of one's ears may also be affected by regular exposure to loud noises.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
4.5K
Graded Potential
4.0K
Graded potentials are localized fluctuations in the cell membrane's electrical charge, commonly found in the dendrites of neurons. The magnitude of these potential changes depends on the strength of the initiating stimulus. In a membrane at its resting potential, a graded potential signifies a voltage shift either above -70 mV or below -70 mV.
Graded potentials fall into two categories: depolarizing and hyperpolarizing. Depolarizing graded potentials typically occur when sodium (Na+) or...
Graded potentials fall into two categories: depolarizing and hyperpolarizing. Depolarizing graded potentials typically occur when sodium (Na+) or...
4.0K
Auditory Perception
385
The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the...
385
Sensory Perception: Organization of the Somatosensory System
3.1K
The somatosensory system is the central and peripheral nervous system component that senses and processes touch, pressure, pain, temperature, and body position or proprioception. The process of sensation takes place at three levels:
The receptor level:
The receptor level is the first stage of sensation. It involves the detection of a stimulus by specialized sensory receptors. The stimulus must arrive within the receptor's receptive field. Next, the receptor converts the energy of the...
The receptor level:
The receptor level is the first stage of sensation. It involves the detection of a stimulus by specialized sensory receptors. The stimulus must arrive within the receptor's receptive field. Next, the receptor converts the energy of the...
3.1K
Gestalt Principles of Perception
353
Gestalt principles provide a framework for understanding how humans perceive objects as unified wholes within their context. These principles are essential in explaining the cognitive processes that make sense of complex visual stimuli by organizing them into coherent groups. One fundamental principle is proximity, which posits that objects located close to each other are perceived as a collective group. For instance, when dots are positioned near one another, the visual system interprets them...
353


