Quotes About Frontal cortex

Because it is the last to mature, by definition the frontal cortex is the brain region least constrained by genes and most sculpted by experience. This must be so, to be the supremely complex social species that we are. Ironically, it seems that the genetic program of human brain development has evolved to, as much as possible, free the frontal cortex from genes.

acute stress strengthens connectivity between the frontal cortex and motoric areas, while weakening frontal-hippocampal connections; the result is decision making that is habitual, rather than incorporating new information.

What does the frontal cortex do? Its list of expertise includes working memory, executive function (organizing knowledge strategically, and then initiating an action based on an executive decision), gratification postponement, long-term planning, regulation of emotions, and reining in impulsivity.35

willpower takes metabolic power, thanks to the glucose demands of the frontal cortex. This was the finding that when people are hungry, they become less generous in economic games.

Various studies, predominantly by Roy Baumeister of Florida State University, show that when the frontal cortex labors hard on some cognitive task, immediately afterward individuals are more aggressive and less empathic, charitable, and honest. Metaphorically, the frontal cortex says, "Screw it. I'm tired and don't feel like thinking about my fellow human.

when the frontal cortex labors hard on some cognitive task, immediately afterward individuals are more aggressive and less empathic, charitable, and honest.

THE DELAYED MATURATION of the frontal cortex suggests an obvious scenario, namely that early in adolescence the frontal cortex has fewer neurons, dendritic branches, and synapses than in adulthood, and that levels increase into the midtwenties. Instead, levels decrease.

A vida adulta está cheia de encruzilhadas significativas nas quais fazer a coisa certa é sem dúvida mais complicado. Conduzir-se a contento por esse caminho faz parte do portfólio do córtex frontal, e desenvolver as habilidades necessárias para fazer isso de maneira correta requer um profundo aprimoramento por meio da experiência.

Moreover, sustained stress and glucocorticoid exposure enhance LTP and suppress LTD in the amygdala, boosting fear conditioning, and suppress LTP in the frontal cortex. Combining these effects—more excitable synapses in the amygdala, fewer ones in the frontal cortex—helps explain stress-induced impulsivity and poor emotional regulation.

So if whites see a black face shown at a subliminal speed, the amygdala activates.10 But if the face is shown long enough for conscious processing, the anterior cingulate and the "cognitive" dlPFC then activate and inhibit the amygdala. It's the frontal cortex exerting executive control over the deeper, darker amygdaloid response.

how acute stress strengthens connectivity between the frontal cortex and motoric areas, while weakening frontal-hippocampal connections; the result is decision making that is habitual, rather than incorporating new information. Similarly, chronic stress increases spine number in frontal-motor connections and decreases it in frontal-hippocampal ones.9

The frontal cortex is the last brain region to fully mature, with the most evolutionarily recent subparts the very last. Amazingly, it's not fully online until people are in their midtwenties.

Thus, as adolescence dawns, frontal cortical efficiency is diluted with extraneous synapses failing to make the grade, sluggish communication thanks to undermyelination, and a jumble of uncoordinated subregions working at cross-purposes; moreover, while the striatum is trying to help, a pinch hitter for the frontal cortex gets you only so far. Finally, the frontal cortex is being pickled in that ebb and flow of gonadal hormones. No wonder they act adolescent.

mere five minutes of practice a day (for five weeks) increased left-sided baseline activity in the frontal cortex—a pattern that, as we saw in the discussion of the split brain, has been associated with positive emotions.

Meditation led to decreased density of the amygdala, a physical change that was correlated with subjects' self-reported stress levels—as their amygdalae got less dense, the subjects felt less stressed. Other studies have found that Buddhist monks who are especially good at meditating show much greater activity in their frontal cortices, and much less in their amygdalae, than normal people.n Meditation and deep-breathing exercises work for

transient hypofrontality removes our sense of self. With parts of the prefrontal cortex deactivated, there's no risk assessor, future predictor, or inner critic around to monitor the situation. The normal safety measures kept in place by the conscious mind are no longer. This is another reason why flow states significantly enhance performance: when the "self" disappears, it takes many of our limits along for the ride.

If you are standing still and decide to take a step, the movement of your leg on the basis of your decision involves axons that originate in cell bodies located in the movement control regions in the frontal cortex (just behind your forehead) and that travel uninterrupted to the base of the spinal column (in the region of your lower back).

This in no way implies the existence of multiple executives, each with their own planning and decision-making capacities. Instead, it suggests that the various component executive functions are achieved by a set of interconnected circuits that are spread over several brain regions in the frontal cortex, and even other regions,

Your experience is a dream; so is my experience. This stuff about how the frontal cortex is repressed during dreaming, lucid dreaming presents an obvious contradiction to it. The only difference is sensory input.

What adolescence is about is by trial and error, honing a frontal cortex that is going to be more optimal by the time you're 25.

But it is our perception of success that has the biggest hit on this part of our brain. When dopamine levels are high, they engage our frontal cortex, where are our "executive function" exists.

Children who plan their own goals, set weekly schedules, evaluate their own work build up their frontal cortex and take more control over their lives.

Compared to the brains of normal controls, the brains of our OCD volunteers showed hypermetabolic activity in the orbital frontal cortex, which is tucked into the underside of the front of the brain above and behind the eyes (hence its name) as shown in Figure 1 on page 63. The scans showed, too, a trend toward hyperactivity in the caudate nucleus.