Neurotree growth.
This chart shows the number of people added to Neurotree each quarter since it was created in January 2005. It seemed like things might be slowing down in 2007, but after recent months, it appears we haven't run out of neuroscientists quite yet. In striking contrast with previous first quarters, the first quarter of 2009 was our biggest period of growth so far! Of course, that hasn't stopped us from trying to cast the net wider with trees for other fields. This effort provides the exciting opportunity to connect the genealogy of neuroscience to other fields. As of Fall 2009, these other trees have started growing faster than Neurotree for the first time. If your non-neuroscientist friends are jealous of Neurotree, have them contact us to set up a tree of their own.

Neurotree Nodes: Quarterly Growth

1927-

1542-

1156-

771-

385-

Jan-05

Apr-05

Jul-05

Oct-05

Jan-06

Apr-06

Jul-06

Oct-06

Jan-07

Apr-07

Jul-07

Oct-07

Jan-08

Apr-08

Jul-08

Oct-08

Jan-09

Apr-09

Jul-09

Oct-09

Jan-10

Quarter

Neuroscientists  Other trees

Node vs. connection growth.
It's also interesting to compare the rate of growth of nodes vs. connections. So far, they've grown at a similar pace, but as the tree is getting larger, the number of new connections seems to be gradually outpacing the number of new nodes. Another trend to keep an eye on!

Neurotree: Nodes vs. Connections

2783-

2226-

1670-

1113-

557-

Jan-05

Apr-05

Jul-05

Oct-05

Jan-06

Apr-06

Jul-06

Oct-06

Jan-07

Apr-07

Jul-07

Oct-07

Jan-08

Apr-08

Jul-08

Oct-08

Jan-09

Apr-09

Jul-09

Oct-09

Jan-10

Quarter

New nodes  New connections

Daily growth.
A bit more detail about what has been happening during the last month.

Neurotree: Growth during last 30 days
26-
21-
16-
10-
5-
	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	01	02	03	04	05	06	07	08	09	10
	Day
	Neuroscientists  Other trees