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相关概念视频

Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

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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...
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Depth Perception and Spatial Vision01:15

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Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
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相关实验视频

Updated: Jan 14, 2026

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example
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Published on: October 24, 2012

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在一个不可预测的虚拟定位任务中,biosonar动态和空间注意力.

Amaro Tuninetti1, Pedro R Polanco2, James A Simmons2,3

  • 1Department of Cognitive and Psychological Sciences, Brown University, Providence RI, USA.

The Journal of experimental biology
|January 13, 2026
PubMed
概括
此摘要是机器生成的。

大棕色蝙蝠在定位回声时调整空间注意力. 外围目标转移和混乱减少准确性,显示注意力偏向于中心.

关键词:
适应式传感感应感应这就是为什么BATBATBAT.生物光是生物光.超声定位是指超声定位的方法.空间注意力空间注意力

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科学领域:

  • 动物行为 动物行为
  • 感官神经科学是一种神经科学.
  • 生物声学是一种生物声学.

背景情况:

  • 呼声定位蝙蝠通过发出声音和解释返回的回声来导航复杂的环境.
  • 了解蝙蝠如何处理听觉空间信息对于理解它们的食策略至关重要.

研究的目的:

  • 为了研究大棕色蝙蝠在回声定位过程中如何调整空间注意力.
  • 为了确定不可预测的目标转移和背景混乱对蝙蝠回声定位准确性和行为的影响.

主要方法:

  • 通过扬声器呈现的虚拟听觉目标的心理实验.
  • 训练了四只大棕色蝙蝠在静止和移动条件下检测和定位回声.
  • 操纵目标不可预测性,外围转移和弱背景杂乱.

主要成果:

  • 蝙蝠在外围和对侧目标转移时的准确性较低.
  • 定位速度更快,但在外围地区不那么精确,倾向于中央声学凝视.
  • 微弱的杂乱降低了定位准确度,并减缓了光束定向调整.
  • 蝙蝠在定位转移的目标时增加了回声定位力度 (减少了间脉冲间隔,更多的声音组),表明更高的感知难度.

结论:

  • 呼声定位蝙蝠的空间注意力偏向于其声学视野的中心.
  • 背景杂乱显著影响回声定位性能和注意力策略.
  • 单独的蝙蝠表现出不同的解决问题的方法,突出表现出行为可塑性.