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Emotion Induced by Acoustic and Odor Stimulation Measured with Startle Probe Paradigm

使用惊吓探针范例测量声音和气味刺激诱发的情绪

基本信息

批准号：
11610084
负责人：
YAMADA Fumio
金额：
$ 2.5万
依托单位：
Osaka Prefectural College of Nursing
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2000
项目状态：
已结题

项目摘要

The purpose of this reserch was to investigate the magnitude of startle eyeblink reflex would reflect the subjective feeling of pleasantness provoked by natural sound and odor stimulations.In the first experiment, subjects were 18 volunteers whose mean age was 21.0 ranged from 18-23. Subjects received the startle noise pulse during natural sound stimulation. The exposure duration of natural sound was 10-sec and its maximum intensity was less than 70dB.Three categories of sound, Pleasant, Unpleasant, or Neutral, were selected among 50 standardized sound samples. Startle pulse was presented 4-, 6-, or 8-sec after the natural sound presentation via headphones. The intensity of the startle noise was set at 110dB(A) at the headphones. The noise durations was 50-ms and its rise/fall times were less than 0.1-ms. Integrated EMG of Orbicularis Oculi, 20ms after the onset of startle stimulus, was assessed for statistical analysis. Results showed that the magnitude of EMG activity during pleasant … More sound condition significantly lower than neutral condition. On the other hand, EMG maguitude during unpleasant condition higher than the neutral condition, but not significant.In the second experiment, 18 university students, 9 males and 9 females, were served as subjects. Pleasant odor (chocolate and banana) and unpleasant odor (pork acid and cod roe) were presented for 5 sec with an intervals of 40-60s. A pulse of white noise (105 dB, 50ms, Oms r/f time) was presented 0.5s, 1.5s, or 3s after the onset of odor stimulation. Reflex magnitude was assessed as an integrated EMG (in A/D unit) of Orbicularis-Oculi within a window of 20-120ms after a pulse onset. Results showed that the mean magnitude of the eyeblink reflex was smaller in pleasant odor condition than that in unpleasant odor condition. The difference between pleasant and unpleasant odor condition was significant only in 1.5s lead interval. It is recommended that startle eyeblink reflex would be used as an objective tool for evaluation of odor with an lead interval of 1.5s.As these results were compatible to the experiments using visual stimuli, it is suggested that startle eyeblink reflex would be a good index of subjective feeling of pleasantness. Less

本研究的目的是探讨自然声和气味刺激引起的惊吓眨眼反射的大小是否能反映主观愉悦感。受试者在自然声刺激期间接受惊吓噪声脉冲。自然声暴露时间为10 s，最大声强小于70 dB。从50个标准化声音样本中选择3类声音，即愉快、不愉快和中性。通过耳机在自然声音呈现后4秒、6秒或8秒呈现惊吓脉冲。惊吓噪声的强度在耳机处被设置为110 dB（A）。噪声持续时间为50-ms，其上升/下降时间小于0.1-ms。眼轮匝肌的整合肌电图，20 ms后的惊吓刺激，进行统计分析。结果表明，在愉快的过程中， ...更多信息健全条件明显低于中性条件。另一方面，不愉快条件下的肌电幅值高于中性条件下的肌电幅值，但不显著。实验二以18名大学生为被试，男9名，女9名。令人愉快的气味（巧克力和香蕉）和令人不愉快的气味（猪肉酸和鳕鱼子）呈现5秒，间隔40- 60秒。在刺激开始后0.5s、1.5s或3s出现白色噪声脉冲（105 dB，50 ms，Oms r/f时间）。反射幅度被评估为眼轮匝肌-眼轮匝肌在脉冲开始后20- 120 ms的窗口内的积分EMG（以A/D单位）。结果表明，愉快气味条件下的眨眼反射平均幅度小于不愉快气味条件下的眨眼反射平均幅度。愉快和不愉快的气味条件之间的差异仅在1.5s的铅间隔显着。建议将惊跳眨眼反射作为评价气味的客观工具，其导联间隔为1.5s，这些结果与视觉刺激实验结果一致，提示惊跳眨眼反射是一个很好的主观愉悦感指标。少