Table 1.

Metadata descriptions.

Property	Description	Type
MEA number	The number of each MEA culture dish	Char
Culture date	The date when neurons were seeded onto the MEA dish	Date time
Recording date	The date when recording was made	Date time
DIV (days in vitro)	The age of the culture	Integer
Is Raw	True = raw data	Boolean
Is Spk	True = spike data	Boolean
Drug ID	If available, specifies the name of the drug applied to the culture	Foreign key
Stimulation ID	If available, specifies the name of the stimulation protocol	Foreign key
Operator	Specifies the person who conducted the experiment	Char
Filename	Original filename	Char
Memo	Other descriptions	Char