How did hebb define the cell assembly? a. all the cortical cells that are activated by any one of the senses. b. all the cortical cells that are activated by the process of memory reconsolidation. c. neurons simultaneously activated by an external stimulus that are reciprocally interconnected.

How did trade contribute to the spread of the plague in the 1300s? trading vessels from the americas brought the plague to london, where it spread across europe. trading caravans from mongolia brought the plague to rome, where it spread across europe. trading caravans from russia brought the plague to barcelona, where it spread across europe. trading vessels from china brought the plague to sicily, where it spread across europe.