Not exact matches
For some people, palatable
foods invoke such a strong
response in the brain's
reward circuit — and so dramatically alter their biology — that willpower will rarely, if ever, be sufficient
to resist eating those
foods once they are around.
In some trials the volunteers had
to press a button whenever they saw a smiling face; in other trials they were asked
to resist the happy faces and instead respond
to the calm ones, even though the sight of a happy face summons up the same
reward - seeking
responses in the brain as the sight of a dollar sign or the prospect of tasty
food.
This causes them
to eat more
to get the same pleasure from their
food, which in turn reduces the
reward response still further.
Some of these, based on previous studies of knockout mice, seem
to play a role in cognition and behavior, including fear
responses and the ability
to learn new behaviors when given
food rewards.
This brain region plays a crucial role in linking the need or desire for a given
reward —
food, sex, etc. — with the motor
response to actually obtain that
reward.
Instead we often use these
food types as a treat or a
reward, or even as a
response to ease pain if children are upset.
«The interesting thing about this finding is that if the same thing happens in humans, eating junk
food may change our
responses to signals associated with
food rewards,» says UNSW Professor Morris.
Overall, they found that adolescent girls with greater BMI showed increased
reward region activation in
response to food images.
If the dogs»
response to faces was learned — by associating a human face with
food, for example — you would expect
to see a
response in the
reward system of their brains, but that was not the case, Berns says.
The most primitive part of the brain — the same
reward pathway activated by
food and sex — lights up in
response to altruistic giving.
The neural
response to food and monetary
reward was measured in 162 adolescents.
His lab will next investigate how reduced - carbohydrate and reduced - fat diets affect the brain's
reward circuitry, as well as its
response to food stimuli.
Differential effects of fructose versus glucose on brain and appetitive
responses to food cues and decisions for
food rewards.
Following an initial period of instrumental training, BAC WT and BAC MT mice were tested for their ability
to discriminate 2 complex visual stimuli (discrimination phase), where nosepokes
to the correct touchscreen stimulus were
rewarded by delivery of a sweetened 14 mg
food pellet
reward, and nosepokes
to the incorrect touchscreen stimulus resulted in a brief blackout period where the screens became inoperative, followed by correction trials until the correct
response was made.
One strain of mouse, C57BL / 6J will seek the
reward over and over,
to the exclusion of
food and sleep, another more slowly acquires the
response, and may not continue
to press the lever if the dose of drug is lowered, or the drug is no longer administered.
Other research has shown that when dieters are offered
rewards like
food, they usually show a stronger brain
response after they've eaten --» which suggests that they're still kind of motivated
to eat even once they're nutritionally full,» Ely says.
When we consume hyper - palatable
foods they light up a series of mechanisms in our brain collectively referred
to as «the
reward response system» that make us want
to consume more of said
food.
Ghrelin works by activating the brain's
reward response to highly addictive sweet, fatty
foods, making you crave them incessantly.
Paul, I ran across this blog entry while trying
to read more about Guyenet in
response to Gary's latest post, where he once again criticises the
food -
reward / palatibility theory.
One obvious interpretation is that overweight individuals are hungrier than lean individuals, and so they have a greater
response to any
food in their
reward centers.
These images triggered the appetite and
reward centers in the brain, and these neural and behavioral
responses to high - calorie
food stimuli may promote eating.
Although much of the literature has focused on dietary fat and sugar as key stimulants of
food reward [22, 23], dietary protein has also been speculated
to elicit similar
reward responses [19].
Higher plasma glucose levels correlated with greater brain activity in executive control centers in the ACC and ventromedial PFC, whereas higher levels of plasma cortisol, but not other hormones, were correlated with greater activation in
reward regions, such as the insula and putamen (P < 0.01, corrected), in
response to high - calorie
food cues.
In general, dopamine is secreted in
response to tasting highly palatable
foods and evokes feelings of enhanced
food reward, pleasure, and well - being [19 — 21].
Once you reach your goal, continue
to give praise for every correct
response, but begin
to provide the
food reward on a more intermittent random basis.
Phasing out
food lures is a simple matter — just put them in your pocket
to be used as
rewards for above - average
responses.
Moreover, the individual differences in the caudate
responses indicate the potentially higher value of social than
food reward for some dogs and may help
to explain the apparent efficacy of social interaction in dog training.
When the
response to the command is consistent, he continues
to use the clicker for success but begins
to vary the
food rewards.
Maternal BE predicted use of more nonresponsive feeding practices (e.g. Emotion Regulation, Restriction for Health, Pressure
to Eat, and
Food as
Reward), indirectly through more Distress
responses to children's negative emotions.