心理学家认为每一个感觉通道都有一种感觉记忆，即可以将感觉刺激的物理特征的精确保持几秒钟或更短的时间。大大扩充了从环境中获取信息的容量和范围。这里你提到的眼睛和听觉，分别是映像记忆和回声记忆。两种都属于短时记忆。映像记忆可以短时存储大量信息；回声记忆保存听觉刺激，比映像记忆持续更久，但容易被新信息所替代。
Psychologists suppose every sensory channel have a perception memory, which can be keeping the physical characteristics of the precise of sensory stimulation for a few seconds or less. Greatly expanded to obtain information from the environment capacity and scope. Eyes and hearing, is image memory and echo memory. Two belong to short-term memory. Images can be short-term memory to store large amounts of information; Echo auditory stimulus collecting and preserving memories, the last longer than the image memory, but easily replaced by the new information.