Bottom-up processing is a psychological concept that refers to the way our brains process information from the external environment. It involves analyzing sensory information starting from the simplest or lowest level of sensory input and working upward toward the brain where its analyzed. In other words, bottom-up processing is perception driven by the external stimulus itself, where sensory data is interpreted based on its inherent properties without reliance on pre-existing knowledge or concepts.

Here are some key takeaways about bottom-up processing in psychology:

• Bottom-up processing is data-driven and emphasizes the importance of the stimulus itself, the raw data of the direct experience.
• Bottom-up processing occurs as our sensory receptors receive new sensory information and do not require prior knowledge or experiences.
• Bottom-up processing is automatic, fast, and usually requires minimal cognitive effort.
• Bottom-up processing is often paired with top-down processing, which uses our background knowledge and expectations to interpret what we see.

Overall, bottom-up processing is an important concept in psychology that helps us understand how our brains process information from the external environment.