[esnr] Antw: Re: NFB and fasting
- From: JefCrotty@xxxxxx
- To: esnr@xxxxxxxxxxxxx
- Date: Sat, 16 Oct 2004 16:29:45 EDT
..............short fasting might even help the brain learn:
The effects of food deprivation and incentive motivation on blood glucose
levels and cognitive function.
Psychopharmacology (Berl). 1997 Nov;134(1):88-94.
Green MW, Elliman NA, Rogers PJ.
Consumer Sciences Department, Institute of Food Research, Reading, UK.
The current study investigated the relationships between blood glucose
levels, mild food deprivation, sympathetic arousal, and cognitive processing
efficiency. Subjects (n = 82) were randomly assigned to four experimental
conditions,
comprising combined manipulations of food deprivation and incentive
motivation. Baseline and mid-session measurements of blood glucose, blood
pressure and
pulse rate were taken. Subjects completed a number of measures of cognitive
processing efficiency and self report measures of affective and somatic state.
Although glucose levels were lowered following food deprivation, there was no
significant detrimental effect of food deprivation on task performance.
However, improved recognition memory processing times were associated with
deprivation
. Incentive motivation was associated with faster simple reaction times and
higher diastolic blood pressure. There were no significant relationships
between glucose levels and task performance, further supporting the hypothesis
that
the brain is relatively invulnerable to short food deprivation.
Food deprivation induced parallel changes in blood glucose, plasma free fatty
acids and feeding during two parts of the diurnal cycle in rats.
Neurosci Biobehav Rev. 1980;4 Suppl 1:17-23.
Le Magnen J, Devos M, Larue-Achagiotis C.
The changes in plasma glucose and free fatty acid levels and in subsequent
feeding induced by 4 to 10 hr of food deprivation were investigated in rats and
compared for the two parts of the diurnal cycle. It was found that increasing
fast duration at night induced a more rapid fall of plasma glucose and
elevation of plasma free fatty acids than in the day. However, a similar
increment of
the first post fast meal was elicited by an identical decrement of blood
glucose level for the two periods except after a 10 hr fast during the day. The
acute effect of darkness and light per se being experimentally excluded, it was
concluded that the size of the first meal following short term food
deprivation was dependent throughout the diurnal cycle on the fast induced
glucoprivic
condition.
Other related posts:
