Converging advances in the fields of molecular biology, molecular gene
tics, cellular biology and embryology have given researchers the tools
for the targeted delivery and stable germline transmission of foreign
genes (transgenes) in the mouse. In the realm of neuropsychiatry, thi
s so-named transgenic technology has begun to catapult our knowledge o
f the genetic, molecular and cellular mechanisms in the brain that are
linked to a variety of mental disorders as well as normal behavioral
processes such as learning and memory. Moreover, the potential for tra
nsgenic technology to develop more precise animal models of specific h
uman neuropsychiatric disorders will likely lead to the identification
of novel targets for therapeutic intervention and facilitate the prec
linical testing of new therapeutic agents. This article examines key i
ssues and highlights recent developments pertaining to the transgenic
modeling of neuropsychiatric disorders.