Effects of auditory and visual stimuli on speech processing of patients with long-term hearing loss(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2021年第2期
- Page:
- 228-232
- Research Field:
- 医学信号处理与医学仪器
- Publishing date:
Info
- Title:
- Effects of auditory and visual stimuli on speech processing of patients with long-term hearing loss
- Author(s):
- ZHANG Guangyu1; XU Longchun2; ZHANG Minfeng2; ZHANG Gang2; ZOU Yue2; CHENG Yunfu1; HE Lemin1; ZHAO Wenbo2; LIU Yiying1; WANG Xiaoyan1; WANG Pengcheng1
- 1. Department of Radiology, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, China 2. the Second Affiliated Hospital of Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271000, China
- Keywords:
- Keywords: auditory-visual reorganization the shortest causal connectivity path auditory-visual inhibition virtual digital brain bilateral hearing loss speech processing
- PACS:
- R318；TP391.4
- DOI:
- DOI:10.3969/j.issn.1005-202X.2021.02.018
- Abstract:
- Abstract: Objective To research the effects of auditory and visual stimuli on the neural activities of cerebral cortices associated with speech processing in patients with hearing loss (HL), thereby providing theoretical support for the rehabilitation treatment of HL patients. Methods Twelve patients with long-term bilateral HL and 12 gender- and age-matched normal-hearing controls were enrolled in the study. The individual virtual digital brain of each subject was firstly constructed. Then a stimulating signal of visual task was processed and then exerted to the secondary visual cortex of the constructed virtual digital brain. Similarly, a stimulating signal of auditory task was also processed and then exerted to the primary auditory cortex of the constructed virtual digital brain. Finally, the changes of brain region activations evoked by these stimulating signals in HL patients were observed. Results The visual stimulus inhibited the neural activities of auditory cortex and Brocas area, and through the shortest causal connectivity paths, further weakened the activation of Brocas area in HL patients compared with normal-hearing controls. In contrast, the auditory stimulus inhibited the activation of visual cortex in HL patients, but enhanced their neural activity of Brocas area through the shortest synchronous causal connectivity paths. Additionally, compared with normal-hearing controls, HL patients presented weaker visual-evoked activation in Wernickes area. Conclusion The findings suggest that the visual stimulus limits the HL patients capacity of speech processing through inhibiting the neural activities of auditory cortex and Brocas area, and that the auditory stimulus improves the HL patients capacity of speech processing through inhibiting the activation of visual cortex and enhancing the neural activity of Brocas area.
Last Update: 2021-02-04