Table 3. Properties of EPSPs Elicited by Pyramidal Cells in the Two Types of Basket Cells in the CA2 Region
Cell type
MP (mV)
Mean amplitude (mV)
EPSP half width (ms)
EPSP 10–90% rise time (ms)
First EPSP CV
% failures first EPSP
PPR 10–20 ms
PPR 20–40 ms
Data are represented as mean ± standard deviation (SD).
Abbreviations: M, mean amplitude; MP, membrane potential; CV, coefficient of variation; PPR, paired pulse ratio.
EPSPs elicited in wide dendritic arbor CA2 basket cells were similar in amplitude to those elicited in narrow dendritic arbor CA2 basket cells (MW U, P > 0.05, U = 41.5) and in CA1 basket cells (MW U, P > 0.05, U = 57). The width at half amplitude of these EPSPs was however significantly broader than those of EPSPs elicited in CA1 basket cells (MW U, P < 0.05, U = 30.5) and in narrow dendritic arbor CA2 basket cells (MW U, P < 0.05, U = 16.5). The rise time was not, however, significantly different from that of EPSPs elicited in CA1 basket cells (MW U, P > 0.05, U = 73.5) or narrow dendritic arbor CA2 basket cells (MW U, P > 0.05, U = 51.5).
