Department of Psychological & Brain Sciences, DartmouthCollege, 6207 Moore Hall, Hanover, NH 03755, USA.
Psychol Sci. 2010 Jul;21(7):901-7. doi: 10.1177/0956797610373934. Epub 2010 Jun 9.
Low-spatial-frequency (LSF) visual information is processed in an elemental fashion before a finer analysis of high-spatial-frequency information. Further, the amygdala is particularly responsive to LSF information contained within negative (e.g., fearful) facial expressions. In a separate line of research, it has been shown that surprised facial expressions are ambiguous in that they can be interpreted as either negatively or positively valenced. More negative interpretations of surprise are associated with increased ventral amygdala activity. In this report, we show that LSF presentations of surprised expressions bias the interpretation of surprised expressions in a negative direction, a finding suggesting that negative interpretations are first and fast during the resolution of ambiguous valence. We also examined the influence of subjects' positivity-negativity bias on this effect.
低空间频率 (LSF) 视觉信息在进行更精细的高空间频率信息分析之前，以元素方式进行处理。此外，杏仁核对包含在负面（例如，恐惧）面部表情中的 LSF 信息特别敏感。在另一项研究中，已经表明惊讶的面部表情是模棱两可的，因为它们可以被解释为负面或正面的效价。对惊讶的更负面解释与腹侧杏仁核活动增加有关。在本报告中，我们表明惊讶表情的 LSF 呈现会使惊讶表情的解释偏向负面，这一发现表明，在解决模棱两可的效价时，负面解释首先出现且迅速。我们还检查了受试者的正负偏差对这种影响的影响。
