皮质听觉唤起潜力的可行性探索,由光谱-时间调制信号唤起
Qingqing Xia1, Jiyue Chen2,3,4,5,6, Yi Zheng7
1College of Medicine, Nankai University, Tianjin, China.
Acta oto-laryngologica
|August 28, 2024
概括
频谱-时间调制 (STM) 信号可以有效地引起声学变化复合体 (ACC) 反应. 对于正常听觉的成年人来说,2周期/八度和2赫兹显示出最佳的稳定性和可重复性,用于ACC测试.
科学领域:
- 听觉神经科学 听觉神经科学
- 神经生理学 神经生理学
背景情况:
- 对听力障碍者来说,客观的语音感知测量对于那些在传统的听觉任务中扎的人来说至关重要.
- 皮质听觉唤起的潜能 (CAEP) 提供了一个潜在的客观测量.
研究的目的:
- 评估使用光谱时间调制 (STM) 信号来唤起CAEP的可行性.
- 为在听力受损人群中进行声学变化复合体 (ACC) 探索建立参考数据.
主要方法:
- 29名正常听觉的成年人接触到STM信号,其频谱调制速率 (0-16周期/八度) 和时间调制速率 (0-8赫兹) 不同.
- 诱导和分析了ACC反应的延迟,振幅和波形重复性.
主要成果:
- 频谱调制速率高达16个周期/八度,在0Hz的时间调制影响了延迟.
- P2-N1振幅对0-1周期/八度和4-8赫兹时间调制敏感.
- 较高的光谱速率 (8,16周期/八度) 显示不稳定;波形重复率和调制相互作用并不显著.
结论:
- 对于诱导ACC反应,STM信号是可行的.
- 在正常听力成年人中,稳定和可重复的ACC的最佳参数是2周期/八度 (光谱) 和2赫兹 (时间).
相关概念视频
The Cochlea
The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
Sensory Functions of the Skin
The skin is the largest organ of the human body and plays a crucial role in our sensory perception. It contains a vast network of sensory receptors that contribute to the skin's protective function by perceiving physical, biological, and environmental cues and generating relevant responses.
There are two main categories of receptors on the skin: capsulated and non-capsulated. The non-capsulated ones are mainly the pain receptors. The capsulated ones can be further categorized based on the...
There are two main categories of receptors on the skin: capsulated and non-capsulated. The non-capsulated ones are mainly the pain receptors. The capsulated ones can be further categorized based on the...
Design Example
The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
Tactile and Chemical Senses
Tactile senses encompass touch, temperature, and pain, each mediated by specific receptors. Touch receptors detect mechanical energy or pressure against the skin. Sensory fibers from these receptors enter the spinal cord and relay information to the brain stem. Here, most fibers cross over to the opposite side of the brain. The touch information then moves to the thalamus, which projects a map of the body's surface onto the somatosensory areas of the parietal lobes in the cerebral cortex. This...


