Visual snow syndrome

High school (ages 12+)
Human Body

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/visual-snow-syndrome

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the primary neurological symptom?Persistent, dynamic visual static (dots) across the entire visual field
2. What is the associated visual disturbances?Palinopsia (afterimages), enhanced entoptic phenomena, and photophobia (light sensitivity)
3. Why do I see tiny dots everywhere?Scientists think it happens because some brain areas become too excited, making the brain send extra signals that look like dots.
4. What other things can happen with visual snow?People may also feel light sensitivity, get headaches, see afterimages, or notice more floaters in their sight.

Lingual Gyrus: A region in the occipital lobe of the cerebral cortex primarily involved in visual processing.
Cerebellum: A major structure of the hindbrain that coordinates voluntary movements such as posture, balance, coordination, and speech.
Thalamocortical Dysrhythmia: An abnormal pattern of electrical activity between the thalamus and the cerebral cortex, affecting sensory processing.
Thalamic Reticular Nucleus (TRN): A thin sheet of neurons surrounding the thalamus that plays a role in regulating thalamic activity and sensory gating.