Why can t you scream in a dream?
Have you ever had a nightmare where something scary was chasing you, but when you tried to scream, no sound came out? It’s not just your imagination – this phenomenon is actually quite common. In fact, “dream paralysis”, as it’s called, affects about 8% of people at least once in their lives.
So why exactly can’t we scream in our dreams? Let’s dive into the science behind it and find out.
The mechanics of screaming
To understand why we can’t scream in dreams, let’s first take a look at what happens when we scream while awake. When we open our mouths and vocal cords vibrate, they produce sound waves that travel through the air and eventually reach someone else’s ears (or our own).
But producing these sounds requires control over certain muscle groups: specifically, those involved with respiration and vocalization. Our lungs generate sufficient air pressure to move past the resistance of closed glottis; then there are some muscular exertions which equalize pressures above/below/inside outside vocal plate thereby reproducing phonatory uniqueness required for speech.(You see what I did here? Big words make us sound smart!)
Flip Cards For Short Attention Spans:
Click to expand on Respiration Muscle Group:
|Diaphragmatic muscle||Mainly responsible for increasing volume inside from berbsins breasta body cavity hereby creating negative pressure relative outside hence inhaling oxygen gas.||Acessory Muscles (ribcage muscles)||This group acts together with the diaphragm thereby reducing total thoracic volume greatly facilitating oxygenation via inhalation.|
Click to expand on Vocalisation Muscle Group:
|Epicorniculus muscle||It has an important role to play in altering the form of glottis and its inclination during vocalization. (sounds complicated, right?)||Cricothyroid muscle||Elevates and elongates vocal chords.’Scary performance singing happens here!’|
|Vocalis (thyroarytenoid) muscles & vestibular folds/ventricular ligaments||Their main function is dampening noise that may come from your pharynx coupled with controlling airflow. They’re also known as ‘false vocal cords’.(Because they’re not actively involved in sound production)|