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Alzheimer's disease patient screening system based on auditory-space matching method

A spatial and auditory technique, applied in the field of cognition, which can solve problems such as the applicability of restraint tests

Active Publication Date: 2017-03-15
PEKING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to research, Alzheimer's disease patients also have cognitive difficulties in hearing, but the tests currently used in clinical practice require patients to make oral reports, which greatly limits the applicability of these tests

Method used

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  • Alzheimer's disease patient screening system based on auditory-space matching method
  • Alzheimer's disease patient screening system based on auditory-space matching method
  • Alzheimer's disease patient screening system based on auditory-space matching method

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Embodiment Construction

[0030] Below with reference to the appendix of the present invention image 3 , to describe the specific implementation method of the present invention in more detail.

[0031] First, the instruction "Please listen carefully to the position of the sound" appears on the computer screen.

[0032] Next, based on the head transfer function, we established six virtual sound source spatial positions on the computer screen, respectively, the vertical angle is 0 degrees, and the horizontal angles are 30 degrees, 90 degrees, 270 degrees and 330 degrees; is 0 degrees, and the vertical angles are +50 degrees and -40 degrees. At each spatial location, the audio stimulus played was a recorded pinyin read by a female at an average speed, respectively [ɑη], [iη], [o], [uei] and [yn], the duration is 0.8 seconds, and the sampling rate is 44.1kHz. Before convolution with the head transfer function, the sound intensity of each read aloud pinyin measured at the center of the screen was 65dB...

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Abstract

The invention discloses an alzheimer's disease patient screening system based on an auditory-space matching system. The alzheimer's disease patient screening system is characterized by comprising a human-computer interaction platform, a signal conversion unit and a signal playing unit; the human-computer interaction platform is used for processing sound information selected through a head-related transfer function into a sound containing space information and sending the sound to the signal conversion unit; the signal conversion unit is used for converting the received sound data signal into an analog signal and sending the analog signal to the signal playing unit; the signal playing unit is used for playing the received sound analog signal. By means of the alzheimer's disease patient screening system, early-phase alzheimer's disease patients can be screened.

Description

technical field [0001] The invention belongs to the field of cognition and relates to a head transfer function, which measures and analyzes people's working memory ability of hearing spatial clues by simulating a spatial sound field to screen Alzheimer's disease patients. Background technique [0002] Working memory (WM) refers to a system with limited energy for temporarily storing and processing information during the execution of cognitive tasks. However, the capacity of this system is limited and there are individual differences. The Visual-Space Matching Test System (Visuospatial Paired Associates Learning test) developed by the University of Cambridge measures people's ability to recognize and remember abstract visual patterns located in different spatial locations, and examines the number of individuals remembered at the first extraction (ie memory scores). Probing the capacity of visuospatial working memory. The test can accurately distinguish early Alzheimer's dis...

Claims

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Application Information

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IPC IPC(8): A61B5/00
CPCA61B5/4088
Inventor 李量吴哲萌曲天书
Owner PEKING UNIV
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