Positive Benefits of Omega-3 On the Nervous System
A scientific study published in the Journal of Behavioral Neuroscience found more scientific proof that docosahexaenoic acid (DHA), an omega-3 fat found in fish and microalgae, is fantastic for the brain. The great neurological benefits of omega-3 fatty acids are not greatly surprising because docosahexaenoic acid makes up over ninety percent of the omega-3 fats in the brain and is necessary for maintaining the neuronal membranes.
The published research shows that omega-3 fats helps the brain avoid “sensory overload.” The authors concluded that omega-3 deficiency reduces the brain’s capacity to handle sensory input. Moreover, even a small reduction in brain levels of DHA can lead to losses in brain function.
This “sensory overload” is is a consequence of improper sensorimotor gating. The scientific research on sensorimotor gating was done on mice, and basically revealed that the omega-3 fat deficient mice quite specifically were incapable of adapting to irritating stimuli as rapidly, and thus were more easily stressed by outside stimuli. Sensorimotor gating is measured specifically through the use of the startle reflex that thing that makes you jump when you experience a sudden loud blast. Essentially, the scientists used a lighter “warning tone” to acclimate to the tone ever-so-slightly before they blasted the more startling one. The mice that benefited least from the warning tone had abnormal sensorimotor gating compared to the mice that had adequate (non-deficient) levels of omega-3. This technique is not too unlike what is actually used to test sensorimotor gating features of humans. Sensorimotor gating issues in autistic spectrum disorders, and specifically individuals with asperger’s have, in other unrelated research demonstrated abnormalities with this startle response.[1]