Table 1.

Treatments, ages, and observed changes in BDNF mRNA expression in experimental animals

Number of animals	Age and manipulation	Effect on cortical BDNF mRNA levels	Effect on LGN BDNF mRNA levels
2	P21 unmanipulated	n.a.	n.a.
2	P28 unmanipulated	n.a.	n.a.
4	P45 unmanipulated	n.a.	n.a.
2	P90 unmanipulated	n.a.	n.a.
2	Adult unmanipulated	n.a.	n.a.
7	P43–P45 binocular TTX	Decreased	Decreased
3	P43–P45 binocular citrate	No change	No change
1	P0–P21 dark-reared	Decreased	No change
1	P0–P28 dark-reared	Decreased	No change
2	P0–P45 dark-reared	Decreased	No change
3	P21–P23 monocular TTX	Decreased in patches in V1	Decreased in eye-specific laminae
2	P23 6 hr monocular TTX	Decreased in patches in V1	Decreased in eye-specific laminae
5	P43–P45 monocular TTX	Decreased in patches in V1	Decreased in eye-specific laminae
2	P43–P45 monocular citrate	No change	No change
3	P45 6 hr monocular TTX	Decreased in patches in V1	Decreased in eye-specific laminae
1	P43–P53 monocular TTX	No change	n.d.
1	P38–P48 monocular TTX	No change	Decreased in eye-specific laminae
2	P35–P45 monocular3H-proline +  P43–P45 monocular TTX	Decreased in blocked-eye  ocular dominance columns	n.d.
1	P90–P92 monocular TTX	Decreased in patches in V1	Decreased in eye-specific laminae
2	Adult 2 d monocular TTX	Decreased in patches in V1	Decreased in eye-specific laminae

n.a., Not applicable; n.d., not determined.