Touch and Perception
The brain allocates significant territory to our hands, reflecting their crucial role in exploring the world. Different species exhibit varying sensory cortex layouts based on their survival needs, such as rats relying heavily on whiskers. Damage to higher-order processing areas can lead to tactile agnosia, where individuals struggle to identify objects by touch, highlighting the intricate relationship between sensation and self-awareness.In this clip
From this podcast
Inner Cosmos with David Eagleman
Ep 56: Why do we care so much about touch? | INNER COSMOS WITH DAVID EAGLEMAN
Related Questions
What is the role of the sense of touch?
What's the experiment he described about your nervous system, where you touch points on your back and try to figure out how many points were touched, and then do the same thing on your finger to test the differences in nerve sensitivity in the two different areas?
Do you have anything to add to the statement: "We have a map of visual space. Certain neurons are seeing things in certain portions of visual space and not others. We have a map of motor space, meaning when we move our limbs in particular directions, we know where those limbs are because even if we can't see them, we have what's called proprioceptive feedback. So we have knowledge about where our limbs are. Our maps of the motor world and our maps of the sensory world are merged" from the episode Using Failures, Movement & Balance to Learn Faster | Huberman Lab Podcast #7 and the clip Sensory Map Alignment?