MONKEYS EXHIBIT PREFERENCE FOR BIOLOGICALLY NON-SIGNIFICANT VISUAL STIMULI
MONKEYS EXHIBIT PREFERENCE FOR BIOLOGICALLY NON-SIGNIFICANT VISUAL STIMULI
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DOI：
10.2117/psysoc.2009.147
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发表时间：
2009-06-01
期刊：
影响因子：
0.5
通讯作者：
Funahashi, Shintaro
中科院分区：
文献类型：
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作者：
Takebayashi, Mika;Funahashi, Shintaro
积极的感觉不仅来自生物学上重要的原因，也来自生物学上不重要的原因（例如，看到偏好的刺激）。为了从神经生物学角度考察猴子对非显著性中性刺激的偏好是否与猴子看到偏好刺激时产生的积极情绪有关，我们首先确定了猴子是否表现出对非显著性分形刺激的偏好。我们同时呈现2种分形刺激，并要求猴子通过眼球运动选择其中一种，并注视所选刺激长达12秒。猴子对不同刺激表现出不同的正确率。通过正确表现的百分比估计的刺激的等级顺序在许多会话中保持不变。刺激的等级顺序与暴露效应或刺激-奖励关系无关。这些结果表明，猴子对分形刺激表现出偏好，通过正确表现百分比估计的刺激等级顺序反映了猴子对刺激的偏好程度。该方法允许我们确定猴子对生物学上不显著的中性刺激的偏好，并进行神经生物学实验，以检验这种偏好是否与积极情绪有关。
Positive feeling is derived not only from biologically significant causes but also from biologically non-significant causes (e.g., seeing preferred stimuli). To neurobiologically examine whether or not the preference for biologically nonsignificant neutral stimuli is related to positive emotion which arises when monkeys see preferred stimuli, we first determined whether monkeys exhibit preference for biologically non-significant fractal stimuli. We presented 2 fractal stimuli simultaneously and asked monkeys to select one of them by eye movements and look at the selected stimulus for up to 12 sec. Monkeys exhibited different percentages of correct performances to different stimuli. The rank orders of the stimuli estimated by the percentage of correct performance were maintained throughout many sessions. The rank orders of the stimuli were not related to the exposure effect or stimulus-reward association. These results indicate that monkeys exhibited preference for fractal stimuli and that the rank orders of the stimuli estimated by the percentage of correct performance reflect the strength of monkey's preference for the stimuli. This method allows us to determine monkey's preference for biologically non-significant neutral stimuli to perform neurobiological experiments for examining whether this preference is related to positive emotion.