Poirel Nicolas, Krakowski Claire Sara, Sayah Sabrina, Pineau Arlette, Houdé Olivier, Borst Grégoire
LaPsyDÉ, Unité CNRS 3521, Université Paris Descartes, Sorbonne Paris Cité, Université de Caen, <location>France</location> Institut Universitaire de France (IUF), <location>Paris, France</location>
LaPsyDÉ, Unité CNRS 3521, Université Paris Descartes, Sorbonne Paris Cité, Université de Caen, <location>France</location>
Exp Psychol. 2014;61(3):205-14. doi: 10.1027/1618-3169/a000240.
The visual environment consists of global structures (e.g., a forest) made up of local parts (e.g., trees). When compound stimuli are presented (e.g., large global letters composed of arrangements of small local letters), the global unattended information slows responses to local targets. Using a negative priming paradigm, we investigated whether inhibition is required to process hierarchical stimuli when information at the local level is in conflict with the one at the global level. The results show that when local and global information is in conflict, global information must be inhibited to process local information, but that the reverse is not true. This finding has potential direct implications for brain models of visual recognition, by suggesting that when local information is conflicting with global information, inhibitory control reduces feedback activity from global information (e.g., inhibits the forest) which allows the visual system to process local information (e.g., to focus attention on a particular tree).
视觉环境由由局部部分（如树木）组成的全局结构（如森林）构成。当呈现复合刺激时（如由小局部字母排列组成的大全局字母），未被注意的全局信息会减慢对局部目标的反应。我们使用负启动范式研究了当局部水平的信息与全局水平的信息冲突时，处理层次刺激是否需要抑制。结果表明，当局部和全局信息冲突时，必须抑制全局信息以处理局部信息，但反之则不然。这一发现对视觉识别的脑模型有潜在的直接影响，表明当局部信息与全局信息冲突时，抑制控制会减少来自全局信息的反馈活动（如抑制森林），从而使视觉系统能够处理局部信息（如将注意力集中在特定的树上）。
