The chemical increases both selective attention (focusing on the relevant stimulus) and sustained attention (maintaining it).

这种化学物质既能增强选择性注意力(关注与主题相关的刺激)，又能增强持续性注意力(维持注意力)。

People exhibiting these symptoms can also suffer a breakdown in selective attention, losing the ability to focus on one thing while filtering others out.

表现出这些症状的人也可能会遭受选择性注意力的破坏，失去专注于一件事而同时过滤掉其他事物的能力。