Older Adults

How quickly do they experience the benefits of exercise. A new University of Maryland study of healthy older adults shows that just one session of exercise increase activation in the brain circuits associate with memory including the hippocampus; which shrinks with age and is the brain region attack first in Alzheimer’s disease.
“While it has been shown that regular exercise can increase the volume of the hippocampus; hence our study provides new information that acute exercise has the ability to impact this important brain region,” said Dr. J. Carson Smith, an associate professor of kinesiology; hence in the University of Maryland School of Public Health and the study’s lead author.

Artificial recurrent neural network

Long short-term memory (LSTM) is an artificial recurrent neural network, (RNN) architecture use in the field of deep learning. Unlike standard feedforward neural networks; so LSTM has feedback connections that make it a “general purpose computer” (that is, it can compute anything that a Turing machine can).

It can not only process single data points (such as images); but also entire sequences of data (such as speech or video). For example, LSTM is applicable to tasks such as unsegmented; so connect handwriting recognition. Physical endurance exercise reduces stress and anxiety, elevates mood, and relieves pain; but the underlying neurobiological mechanisms responsible; hence for these beneficial psychophysical effects remain largely unknown.

The central opioidergic mechanisms likely modulate these effects. In this study, they sought to the opioid hypothesis of exercise induce euphoria by measuring µ-opioid receptor; hence availability in vivo in healthy males twice, before and after aerobic exercise. The study is publish in the Journal of the International Neuropsychological Society.

Team measure the brain activity

Dr. Smith’s research team measure the brain activity (using fMRI) of healthy participants; so ages 55-85 who were ask to perform a memory task that involves identifying famous names and non famous ones. The action of remembering famous names activates a neural network relate to semantic memory; which is known to deteriorate over time with memory loss.
This test was conduct 30 minutes after a session of moderately intense exercise (70% of max effort) on an exercise bike and on a separate day after a period of rest. Participants’ brain activation while correctly remembering names was significantly greater in four brain cortical regions (including the middle frontal gyrus, inferior temporal gryus, middle temporal gyrus, and fusiform gyrus) after exercise compare to after rest.
The increase activation of the hippocampus was also see on both sides of the brain. Just like a muscle adapts to repeat use, single sessions of exercise may flex cognitive neural networks in ways that promote adaptations over time and lend to increase network integrity and function and allow more efficient access to memories,” Dr. Smith explained.