![Top-down view of user pointing to POI. Here, the direction vector of... | Download Scientific Diagram Top-down view of user pointing to POI. Here, the direction vector of... | Download Scientific Diagram](https://www.researchgate.net/publication/358632051/figure/fig4/AS:1123948406276096@1644981590735/Top-down-view-of-user-pointing-to-POI-Here-the-direction-vector-of-head-is-not-counted.png)
Top-down view of user pointing to POI. Here, the direction vector of... | Download Scientific Diagram
![McMaster University on Twitter: "Don't want to wear a helmet? Here's what can happen to your brain if you hit the pavement. http://t.co/cn1dsETf6d" / Twitter McMaster University on Twitter: "Don't want to wear a helmet? Here's what can happen to your brain if you hit the pavement. http://t.co/cn1dsETf6d" / Twitter](https://pbs.twimg.com/media/CCAzYqBXIAMInYj.jpg)
McMaster University on Twitter: "Don't want to wear a helmet? Here's what can happen to your brain if you hit the pavement. http://t.co/cn1dsETf6d" / Twitter
![I hit my head on the edge of a cabinet pretty hard about 12 hours ago, I feel normal, but there's a bump, should I go to the doctor or ER? - Quora I hit my head on the edge of a cabinet pretty hard about 12 hours ago, I feel normal, but there's a bump, should I go to the doctor or ER? - Quora](https://qph.cf2.quoracdn.net/main-qimg-fc27a79209c35cc2878dd9f6039ae858.webp)
I hit my head on the edge of a cabinet pretty hard about 12 hours ago, I feel normal, but there's a bump, should I go to the doctor or ER? - Quora
![I banged my head twice against the wall about an hour ago and felt (still do) nauseated. I sustained a bump on my forehead. It's 5am and I'm incredibly tired, is it I banged my head twice against the wall about an hour ago and felt (still do) nauseated. I sustained a bump on my forehead. It's 5am and I'm incredibly tired, is it](https://qph.cf2.quoracdn.net/main-qimg-68d50e5be8b8c4a266456373518da60a.webp)
I banged my head twice against the wall about an hour ago and felt (still do) nauseated. I sustained a bump on my forehead. It's 5am and I'm incredibly tired, is it
Martial Arts: Is hitting someone on the head really a dependable way of knocking them unconscious? - Quora
Can a blow directly to the top of the head push the brain downward and injure it, or cause an injury similar to coup/contrecoup that occurs from a blow to the sides
![Top: Chinese men seeking alms by threatening to kill themselves by self-mutilation, one (left) kneeling to hit his head against a rock, and the other (right) with burning herbs on his head; Top: Chinese men seeking alms by threatening to kill themselves by self-mutilation, one (left) kneeling to hit his head against a rock, and the other (right) with burning herbs on his head;](https://iiif.wellcomecollection.org/image/V0041275/full/full/0/default.jpg)
Top: Chinese men seeking alms by threatening to kill themselves by self-mutilation, one (left) kneeling to hit his head against a rock, and the other (right) with burning herbs on his head;
![I hit my head on the edge of a cabinet pretty hard about 12 hours ago, I feel normal, but there's a bump, should I go to the doctor or ER? - Quora I hit my head on the edge of a cabinet pretty hard about 12 hours ago, I feel normal, but there's a bump, should I go to the doctor or ER? - Quora](https://qph.cf2.quoracdn.net/main-qimg-bf624487a571180e9a1933b9b60db468.webp)