brain
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| brain [2026/09/22 08:55] – [Specific neuronal circuits] gary1 | brain [2026/11/09 12:29] (current) – [Basic anatomy] gary1 | ||
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| =====Basic anatomy===== | =====Basic anatomy===== | ||
| ***neocortex: | ***neocortex: | ||
| + | *the 6 layered neocortex is unique to mammals | ||
| + | *it enables complex pre-processing visual, auditory, and olfactory signals in the service of conscious experience and is primed to glean the intent of predators and friendly others from subtle variations in calls and facial expressions. | ||
| + | * the brainstem still controls consciousness and “adjudicates” and decides what is important for attention - are the signals currently being preprocessed in the cortex important enough for survival and reproduction to merit conscious attention, replacing what has been attended to up until now? If the decision is positive, the consciousness processor sends a signal back up to the cortex and “marks” the new material running in the cortex at the time, rendering it consciously experienced.(([[https:// | ||
| *75% of the human brain is the neocortex which: | *75% of the human brain is the neocortex which: | ||
| * learns a predictive model of the world - understands the physical characteristics of objects, where they are located, how they behave | * learns a predictive model of the world - understands the physical characteristics of objects, where they are located, how they behave | ||
brain.txt · Last modified: by gary1