The neostriatum is considered to be involved in the induction of purposeful movements or in
the suppression of other movements through the internal segment of the globus pallidus
(GP; the entopeduncular nucleus in the rodents) and the substantia nigra (SN) to which the
striatal spiny neurons project. To understand how the striatum fulfills these functions, it is
necessary to know the physiological and morphological characteristics of its constituent
neurons. Aspiny interneurons in the striatum are considered to receive various excitatory …