Emotions: Autonomic Nervous System & Physiological Markers of Emotion

Posted on

Emotions: Autonomic Nervous System & Physiological Markers of Emotion

– physiological changes associated with fear, anger or excitement occur automatically as a result of our Autonomic Nervous System (ANS)
– the ANS has two branches:
1) sympathetic branch or sympathetic nervous system (SNS)
[it performs actions involved in the fight/flight response (aka the stress response) | it produces feelings associated with fear/anger]
2) parasympathetic branch or parasympathetic nervous system
– the relaxed state [also known as “rest & digest”]

What parts of the body are involved in the SNS?
– eyes (pupils dilate to aid vision)
– saliva glands in mouth (decrease in saliva/dry mouth)
– lungs (respiratory rate increases & you breathe quicker)
– heart (increased heart rate for better oxygenation & more blood flow to muscles)
– liver (stores energy/sugar; releases it to produce energy to enable fight/flight)
– kidneys (adrenal glands sit on top & release the hormone adrenaline; adrenaline also boosts energy)
– the gastro-intestinal tract (decrease in digestion as it requires considerable energy)

What parts of the body are involved in the PNS?
– essentially the same parts of the body, but affects them in the opposite way

Source: Khan Academy @ https://www.khanacademy.org/science/health-and-medicine/executive-systems-of-the-brain/emotion-2014-03-27T18:40:38.294Z/v/autonomic-nervous-system-ans-and-physiologic-markers-of-emotion

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s