The Truth Behind Brain Development and Memory Changes in Old Age
Neuroscientists at the University of Arizona have proven that memory changes seen in old age are not a decline, but rather the brain optimizing itself.
A comprehensive study conducted by US neuroscientists revealed that memory changes occurring in advanced age are not a mental decline or collapse. Scientists determined that the brain restructures itself in order to use accumulated experiences much more efficiently, and that this process is a genetically conserved adaptive developmental stage.
Aging and Mental Changes
Neuroscientists from the University of Arizona in the US revealed that memory changes seen in advanced age do not mean wear and tear or decline of the brain. This new study refutes the thesis, long defended by traditional neuroscience circles, that old age is a period of compensation and decline.
Similarity to Childhood
Scientists stated that a similar neurological leap to the one experienced during childhood also occurs in advanced age. Stating that aging is not a loss of mental capacity, researchers suggested that this period is a genetically conserved adaptive developmental stage.
Task Shift in Brain Regions
According to the research results, as people age, the hippocampus region, which manages immediate and detailed memory, takes a back seat. In contrast, the prefrontal cortex, which processes general information and experiences, takes over control completely.
Efficient Use of Resources
Pointing out that the hippocampus is a structure that consumes excessive energy, researchers determined that the brain aims to use its resources sparingly. It was understood that the brain makes a conscious task shift to organize the massive accumulation of data acquired in youth.
Strengthening of Neural Connections
It was determined that some neural connections and synaptic networks significantly strengthen in old age instead of weakening. It was determined that the brain shifts its priority away from remembering daily trivial details.
Expert Opinions and New Perspective
Fabian-Xose Fernandez, a psychologist and lead author of the study, emphasized that reading normative aging solely as a collapse means missing the big picture. He stated that the aging brain is optimized for the sharing of stored expertise.
Impact on Alzheimer's Disease
Experts emphasized that clarifying this natural adaptation strategy of the brain will cross a critical threshold in the medical world. It was stated that the symptoms of Alzheimer's disease, which emerge with uncontrolled hippocampal activity in early stages, can be distinguished from normal aging earlier.