Correlation between vividness of visual imagery and echolocation ability in sighted, echo-naïve people
Correlation between vividness of visual imagery and echolocation ability in sighted, echo-naïve people
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视力正常、无回声的人的视觉形象生动度与回声定位能力之间的相关性
DOI：
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发表时间：
2014
影响因子：
2
通讯作者：
Bethany K. Gee
中科院分区：
文献类型：
--
作者：
L. Thaler;R. C. Wilson;Bethany K. Gee
自20世纪40年代以来，人类回声定位的能力就得到了承认。然而，关于是什么决定了回声定位能力的个体差异，人们知之甚少。尽管听力被认为是盲人和视力训练有素的回声定位器的一个重要因素，但有证据表明，这可能不适用于视力正常的新手。因此，人类认知的非听觉方面可能是相关的。之前的脑成像研究已经表明，盲人回声定位专家在回声定位过程中，以及盲人和有视力的人在视觉意象过程中，早期的“视觉”，即Calcarine，皮层都会被激活。因此，我们研究了回声定位能力与视觉表象的生动性之间的关系。24名有视力的回声定位新手完成了Marks的VVI问卷(BR J Penol1：17-24,1973)，他们还完成了回声定位尺寸辨别任务。此外，他们还参加了一系列听觉测试，以确定他们检测声音频率和强度波动的能力，以及右耳和左耳之间的听力差异。相关分析表明，参与者的VVI与回声定位能力之间存在显著关系，即即使考虑到听觉能力的差异，VVI较强的参与者也具有较高的回声定位能力。在潜在机制方面，我们认为，要么视觉意象的使用是回声定位的一种策略，要么视觉意象和回声定位都依赖于为不依赖视网膜输入的认知任务招募海马体皮质的能力。
The ability of humans to echolocate has been recognized since the 1940s. Little is known about what determines individual differences in echolocation ability, however. Although hearing ability has been suggested as an important factor in blind people and sighted-trained echolocators, there is evidence to suggest that this may not be the case for sighted novices. Therefore, non-auditory aspects of human cognition might be relevant. Previous brain imaging studies have shown activation of the early ‘visual’, i.e. calcarine, cortex during echolocation in blind echolocation experts, and also during visual imagery in blind and sighted people. Therefore, here we investigated the relationship between echolocation ability and vividness of visual imagery (VVI). Twenty-four sighted echolocation novices completed Marks’ (Br J Psychol 1:17–24, 1973) VVI questionnaire and they also performed an echolocation size-discrimination task. Furthermore, they participated in a battery of auditory tests that determined their ability to detect fluctuations in sound frequency and intensity, as well as hearing differences between the right and left ear. A correlational analysis revealed a significant relationship between participants’ VVI and echolocation ability, i.e. participants with stronger VVI also had higher echolocation ability, even when differences in auditory abilities were taken into account. In terms of underlying mechanisms, we suggest that either the use of visual imagery is a strategy for echolocation, or that visual imagery and echolocation both depend on the ability to recruit calcarine cortex for cognitive tasks that do not rely on retinal input.
回声定位的敏锐度：与专家表现相比，视力正常的人的空间分辨率。
影响因子：
1.1
作者：
Teng,Santani;Whitney,David
通讯作者：
Whitney,David