Chapter
The History of Left and Right Handedness
10:06 - 17:32 (07:25)
There were two mutations, one about 200,000 years ago and the other between 20,000-100,000 years ago, that resulted in a preference for right-handedness and the localization of the language center to the left hemisphere of the brain.
Clips
This podcast episode discusses the everyday struggles of being left-handed, including using tools and sitting at a dinner table, from the perspective of two hosts, Who?
10:06 - 10:54 (00:48)
Summary
This podcast episode discusses the everyday struggles of being left-handed, including using tools and sitting at a dinner table, from the perspective of two hosts, Who? Goodie Alice.
ChapterThe History of Left and Right Handedness
EpisodeSelects: Why Do Lefties Exist?
PodcastStuff You Should Know
Scientists are puzzled about why humans have specific handedness and not others, and where it comes from despite having a theory that it may be linked to brain lateralization and the representation of language and fine-motor skills.
10:54 - 12:19 (01:24)
Summary
Scientists are puzzled about why humans have specific handedness and not others, and where it comes from despite having a theory that it may be linked to brain lateralization and the representation of language and fine-motor skills.
ChapterThe History of Left and Right Handedness
EpisodeSelects: Why Do Lefties Exist?
PodcastStuff You Should Know
The human brain is more likely to have the motor cortex and language center on the left hemisphere due to the mutation that occurred 200,000 years ago, which caused brain lateralization.
12:19 - 17:32 (05:12)
Summary
The human brain is more likely to have the motor cortex and language center on the left hemisphere due to the mutation that occurred 200,000 years ago, which caused brain lateralization. However, having the language center on the right hemisphere does not necessarily mean someone is left-handed.