Journal
BEHAVIORAL NEUROSCIENCE
Volume 120, Issue 2, Pages 229-240Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0735-7044.120.2.229
Keywords
place learning; cerebellar cortex; interpositus nucleus; cerebellum-dependent learning; hippocampus-dependent learning
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Funding
- NCRR NIH HHS [T32 RR07008] Funding Source: Medline
- NIA NIH HHS [AG21925] Funding Source: Medline
- NINDS NIH HHS [NS34509] Funding Source: Medline
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To examine the isolated effects of altered currents in cerebellar Purkinje neurons, the authors used Scn8a(flox/flox), Purkinje cell protein-CRE (Pep-CRE) mice in which Exon 1 of Scn8a is deleted only in Purkinje neurons. Twenty male Purkinje Scn8a knockout (PKJ Scn8a KO) mice and 20 male littermates were tested on the Morris water maze (MWM). Subsequently, half were tested in 500-ms delay and half were tested in 500-ms trace eyeblink conditioning. PKJ Scn8a KO mice were impaired in delay conditioning and MWM but not in trace conditioning. These results provide additional support for the necessary participation of cerebellar cortex in normal acquisition of delay eyeblink conditioning and MWM and raise questions about the role, if any, of cerebellar cortex in trace eyeblink conditioning.
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