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CN-121489483-B - Multimode attention oscillation testing device and method

CN121489483BCN 121489483 BCN121489483 BCN 121489483BCN-121489483-B

Abstract

The invention discloses a multimode attention oscillation testing device and method, and belongs to the field of attention oscillation testing devices. The device comprises a pressure sensor, a light sensor, a reset key, an upper computer, a singlechip and a sound transmission system. The device comprises a mute isolation unit, a reset key, a sound transmission system, a GUI display control module, a light sensor and a sound transmission system, wherein the reset key is arranged in the mute isolation unit, a pressure sensor for collecting pressure signals in the key process is attached to the surface of the reset key, the upper computer is provided with the GUI display control module, the GUI display control module is used for sequentially displaying different interface patterns in a screen display interface according to a preset attention oscillation study model, the light sensor is used for capturing the appearance time of auxiliary mark patterns, and the sound transmission system can randomly play sound stimulus to a tested person in a sound stimulus time window of each test time. The device can realize continuous pressure dynamic acquisition, accurate visual stimulus presentation time detection and mute operation functions through the same equipment, output data streams with uniform time stamps for supporting multi-mode attention oscillation research, and can support docking of external physiological signals.

Inventors

  • LUO JIANLIANG
  • CHEN XINYU
  • CAO LIYU

Assignees

  • 浙江大学

Dates

Publication Date
20260508
Application Date
20260113

Claims (9)

  1. 1. The multimode attention oscillation testing device is characterized by comprising a pressure sensor (2), an optical sensor (3), a reset key (4), an upper computer (5), a singlechip (6) and a sound transmission system (7); the reset key (4) is arranged in the mute isolation unit (1) to isolate noise generated in the process of pressing the key (4), and a pressure sensor (2) is attached to the surface of the reset key (4) and is used for collecting pressure signals in the process of pressing the reset key (4) by a tested person; The upper computer (5) is provided with a GUI display control module which is used for sequentially presenting different interface patterns in a screen display interface according to a preset attention oscillation research paradigm, wherein the interface patterns which sequentially appear in each test time are a visual stimulus pattern and an auxiliary mark pattern which synchronously appear, an inquiry interface which requires a tested person to judge whether sound stimulus is heard or not and requires a judgment result to be input, and a prompt interface which prompts whether the time for pressing a reset key (4) in the test time is accurate or not, in the GUI display control module, the duration of a single test time is set to be not less than 4 s, wherein the gray screen with the duration of 1 s is presented firstly, the visual stimulus pattern and the auxiliary mark pattern synchronously appear at the 1.5 s position after the visual stimulus pattern is presented, and the standard time for pressing the reset key (4) is the 0.3 s to 2.7 s region after the visual stimulus pattern is presented, and the inquiry interface appears at the 3 rd s position after the visual stimulus pattern; The light sensor (3) is adhered to the screen of the upper computer (5), and the sensing area corresponds to the display area of the auxiliary mark pattern only and is used for capturing the appearance time of the auxiliary mark pattern; The singlechip (6) is respectively in communication connection with the light sensor (3), the upper computer (5) and the pressure sensor (2) on the reset key (4), and electric signals detected by the light sensor (3) and the pressure sensor (2) are all acquired by the singlechip (6) in real time and then transmitted to the upper computer (5); The sound transmission system (7) is in communication connection with the upper computer (5) and is used for randomly playing sound stimulus to the tested person in each test sound stimulus time window according to the instruction issued by the upper computer (5), and the sound stimulus time window is a time window centered on the standard time of pressing the reset key (4).
  2. 2. The multi-mode attention oscillation testing device according to claim 1, wherein the mute isolation unit (1) comprises a latex pad (102) and a soundproof cotton cover (104) which are assembled to form a closed enclosure body only with a hand access passage, and the surface of the latex pad (102) is wrapped with mesh cloth.
  3. 3. The multimode attention oscillation testing device according to claim 1, wherein the upper computer (5) is further connected with a keyboard (10), and the judgment result is input through two different keys on the keyboard (10).
  4. 4. The multimode attention oscillation testing device according to claim 1, characterized in that the optical sensor (3) adopts a photodiode integrated with a signal amplifier, and the current output by the photodiode is converted into a voltage signal by the signal amplifier and then sent to the singlechip (6).
  5. 5. The multimode attention oscillation testing device according to claim 1, wherein the light sensor (3) is attached and fixed to the screen edge of the upper computer (5), the display area of the auxiliary mark pattern is located at the attaching position of the corresponding light sensor (3), and the visual stimulus pattern is presented in the central area of the screen.
  6. 6. The multimode attention oscillation testing device according to claim 1, wherein the pressure sensor (2) adopts a piezoresistive force-sensitive resistor, and the resistance change of the piezoresistive force-sensitive resistor is converted into a linear voltage signal by a signal amplifier and then sent to the singlechip (6).
  7. 7. The multi-modal notice oscillation testing device as claimed in claim 1 wherein the host computer (5) is further connected with an external physiological signal monitoring device, the monitored physiological signal comprising myoelectricity or respiration.
  8. 8. The multi-modal notice oscillation testing device as claimed in claim 1 wherein in said GUI display and control module, said prompt interface appears immediately after the moment when the completion of the input of the judgment result by the human subject is detected, and a single test is ended after said prompt interface disappears.
  9. 9. A method for collecting multi-modal notice oscillation test data, wherein the collecting method is implemented based on the multi-modal notice oscillation test device as claimed in claim 1, comprising: S1, after receiving a start command, the upper computer (5) starts to execute a new test time, a GUI display control module presents a gray screen firstly, visual stimulation patterns and auxiliary mark patterns are synchronously presented in a screen display interface after the gray screen is finished, and the singlechip (6) acquires electric signals output by the optical sensor (3) in real time and transmits the electric signals to the upper computer (5) to identify and record the first moment when the auxiliary mark patterns appear on the screen; S2, randomly selecting a time point in the sound stimulation time window, and playing sound stimulation to the tested person according to a preset sound stimulation normal form, wherein the sound stimulation normal form comprises randomly selected sound test times and silent sound test times, and the sound stimulation intensity emitted in the sound test times is controlled at the hearing threshold level of the tested person; S3, after the sound stimulation time window is finished, a query interface is presented on a screen, and a tested person is required to judge whether the sound stimulation is heard in the current test time; the singlechip (6) collects the input judgment result in real time, transmits the judgment result to the upper computer (5) for recording, and then gives the correct and incorrect result of the current test person on whether to hear the sound stimulus according to the actual record of the current test playing sound stimulus; S4, according to the second moment of pressing the reset key (4) by the tested person recorded in the current test time and the standard moment of pressing the reset key (4), a prompt interface is presented on a screen, and whether the moment of pressing the reset key (4) in the current test time is accurate or not is prompted to the tested person until the next test time; S5, continuously and circularly executing S1-S4 until all test times are completed, recording data acquired in all test times by an upper computer (5) for carrying out multi-mode attention oscillation analysis, calculating the time difference of the actual playing time of the sound stimulus in each test time relative to the time zero point by taking the first time or the second time as the time zero point in the upper computer (5), grouping according to the time difference, and counting sound detection rates corresponding to different time differences based on the positive and negative results to obtain a sound detection rate sequence so as to reflect the oscillation characteristics of hearing attention before and after different reset events occur.

Description

Multimode attention oscillation testing device and method Technical Field The invention belongs to the field of attention oscillation testing devices, and particularly relates to a multimode attention oscillation testing device and method. Background In daily life, we can hear the conversation of others from a noisy environment, or find exactly which piece belongs to oneself in a stack of items, which all depend on a core ability of the brain-Attention. Note refers to the process of focusing limited cognitive resources on specific information continuously while filtering or ignoring irrelevant information. It can be understood as a "mental focus" with which the brain focuses important information while ignoring extraneous disturbances. Modern research has found that it is noted that this "spotlight" does not constantly illuminate steadily, but rather resembles a bulb that blinks at a particular rhythm. This periodic fluctuation in attention is called attention oscillation (Attentional Oscillation). The "phase" refers to the specific point in time at which the periodic fluctuation occurs, e.g. "peak" ("brightest" moment) is the moment of maximum brain processing power, and "trough" ("darkest" moment) is the moment of minimum brain processing power. When an important or sudden event occurs (e.g., a sudden visual stimulus or an active keystroke), the brain immediately "restarts" the rhythm that notices the "spotlight" blinking, starting from a completely new starting point. This process is a reset. By "resetting" the rhythm of attention, the brain can ensure that it can meet and process this newly emerging critical information in an optimal state. Psychological and cognitive neuroscience studies typically capture this oscillation by means of densely sampled behavioral experiments. For example, after a reset event occurs, weak stimulus is presented multiple times at different points in time (typically within 3 s of the occurrence of the reset event), and the rhythm pattern in which it notices oscillations is countered by the change in detection rate reported by the human subject. These reset events can be divided into two categories: 1) Exogenous stimulus reset-specific visual events (e.g., visual stimulus appearance, disappearance). 2) Endogenous action reset, autonomous motion control (e.g. key press, grabbing). Both types of reset events can reset the attention oscillation phase, so that follow-up attention fluctuation becomes regular and predictable, and the information processing efficiency is remarkably improved like a metronome. However, because of the uncertainty of autonomous key presses (voluntary key press moments of the tested person cannot be predicted), the existing research paradigm can only achieve dense sampling after key press actions occur to capture attention oscillations, and cannot detect attention oscillation dynamics before key presses at all, and specific reset effects and attention oscillation dynamics of the whole process of key press actions (from initial pressing to final releasing, lasting hundreds of milliseconds), resulting in lack of attention oscillation research before key press intention and during formation. Computers are widely used to generate and control measurements of various stimulus response times to the human body. A conventional computer keyboard may be used to measure the delay in response to a stimulus by a test human subject, i.e., the time from sensing the stimulus to responding. The utility model patent with the application number of CN201120422259.7 provides a human body reaction time measuring device based on a singlechip for external stimulus, which comprises a photosensitive sensor, a singlechip, keys and a computer (upper computer). Wherein the photosensitive sensor is connected with a singlechip which is connected with an upper computer. The device uses the internal timer of the singlechip to carry out timing measurement, and is limited in that on one hand, the timing mode is difficult to synchronize the time stamp with external equipment, and on the other hand, the device can only capture the discrete moment of the occurrence of the key, and can not collect and analyze the continuous dynamic pressure change in the whole process (including the pressing, maintaining and releasing phases) of the key. The patent of the utility model with the application number of CN202323024150.X provides a multi-mode and multi-mode integrated interpersonal interaction experimental device and system, wherein the device comprises two single-chip computers, keys, an upper computer, a sound transmission system and two pressure sensors. The pressure sensor in the device is only used for identifying the triggering moment (discrete event) of the key action, and the distinction and quantitative analysis of the continuous pressure dynamic change in the whole key process (including the pressing, holding and releasing stages) cannot be realized. In general, research into fine-note osc