Thalamocortical System II

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" summary

Interneurons in thalamus send most outputs from dendritic outputs that form glomerular triads where a sensory axon excites a relay cell and, at higher firing rates, engages metabotropic receptors on the interneuron to add inhibition and produce ~3–4 second contrast adaptation. Physiological mapping and slices show retinal “driver” input yields relay receptive fields yet accounts for only 5% of synapses, while cortical inputs dominate numerically. Layer 5 provides large driver-like input to pulvinar, creating transthalamic pathways that relay between cortical areas and warn that raw connectome counts can mislead about information flow.

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" chapters (21)

1. 0:00Intro
2. 0:46Cell Types
3. 3:21Triads
4. 4:55Synapses
5. 6:04Inter Neuron
6. 14:05Parallel Processing
7. 14:23ganglion cell types
8. 15:09retina cell types
9. 17:46matrix cells
10. 20:46glutamatergics
11. 22:44modulators
12. 24:48cortical inputs
13. 26:11dendritic inputs
14. 29:31transatlantic cortical processing
15. 32:49somatosensory system
16. 35:04questions
17. 35:56Pulvinar
18. 39:21Area
19. 42:28Integration
20. 52:55Metabotropic receptors
21. 55:23Cortical synapses