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13e functions of limbic system - Coggle Diagram
13e
functions of limbic system
Autonomic functions
Stimulation of many parts of the limbic system specially that of
amygdala
produces
autonomic responses such as changes in
cardiovascular, respiratory and gastrointestinal system through hypothalamus.
Such changes are also observed during emotional states.
Autonomic functions of hypothalamus were discussed before.
Regulation of feeding behaviour
Limbic system regulates feeding behaviour
mainly through hypothalamus and amygdala.
Hypothalamus
regulates food intake through the
feeding centre and
satiety centre.
Amygdala
Stimulation of amygdala produces
movements associated with eating
(chewing, swallowing and licking).
On the other hand, lesions of amygdala
produce moderate hyperphagia (overeating).
There may be indiscriminate ingestion of
edible or nonedible materials.
Regulation of sexual behaviour and reproduction
The sexual activity comprises 2 components:
Sexual behaviour
The basic sex drive
(urge to copulate)
The basic sex drive (urge to copulate)
is an instinctual behaviour as food intake.
It is the function of limbic system
and hypothalamus which in
turn are influenced by gonadal hormones and cerebral cortex.
Act of copulation
It is controlled by a series of
reflexes integrated in the
spinal cord and brainstem.
is controlled by neural and endocrinal factors.
Maternal behaviour
Maternal behaviour, as demonstrated in rat,
is the function of cingulate gyrus and retrosplenial portion of the limbic cortex.
In animals, maternal behaviour is primarily neurogenic, i.e. it depends on olfactory, auditory, visual and thermotactile stimuli arising from the young ones.
Prolactin and oxytocin, though absolutely not essential, have been reported to facilitate maternal behaviour.
Maternal behaviour, in rats, is manifested by nest
building, suckling, and licking the pups and retrieving the pups when separated.
In general, the maternal behaviour is concerned with the
nursing (breastfeeding) and
protection of the offspring by the mother.
Emotional behaviour
Emotional behaviour is one of the most important functions of limbic system.
Motivational behaviour
Motivational behaviour is also an important function of the limbic system.