Table I

. | . | Numbers of Synaptic Vesicles per Unit Area in Presynaptic Terminals . | ||||||
---|---|---|---|---|---|---|---|---|

Wild-type . | . | Synapsin I^{−/}
. | ||||||

Excitatory . | . | Inhibitory . | Excitory . | . | Inhibitory . | |||

Control | 233 ± 15 (n = 10) | 209 ± 60 (n = 14) | 225 ± 31 (n = 12) | 245 ± 47 (n = 10) | ||||

Stimulated | 202 ± 29 (n = 12) | 176 ± 27 (n = 12) | 209 ± 20 (n = 8) | 139 ± 25^{*} (n = 10) | ||||

Numbers of Synaptic Vesicles per Unit Area within 200 nm from the Synaptic Cleft | ||||||||

Wild-type | Synapsin I^{−/} | |||||||

Excitatory | Inhibitory | Excitatory | Inhibitory | |||||

Control | 341 ± 66 (n = 10) | 270 ± 76 (n = 14) | 310 ± 46 (n = 12) | 335 ± 28 (n = 10) | ||||

Stimulated | 283 ± 45 (n = 12) | 259 ± 30 (n = 12) | 269 ± 50 (n = 8) | 304 ± 72 (n = 10) |

. | . | Numbers of Synaptic Vesicles per Unit Area in Presynaptic Terminals . | ||||||
---|---|---|---|---|---|---|---|---|

Wild-type . | . | Synapsin I^{−/}
. | ||||||

Excitatory . | . | Inhibitory . | Excitory . | . | Inhibitory . | |||

Control | 233 ± 15 (n = 10) | 209 ± 60 (n = 14) | 225 ± 31 (n = 12) | 245 ± 47 (n = 10) | ||||

Stimulated | 202 ± 29 (n = 12) | 176 ± 27 (n = 12) | 209 ± 20 (n = 8) | 139 ± 25^{*} (n = 10) | ||||

Numbers of Synaptic Vesicles per Unit Area within 200 nm from the Synaptic Cleft | ||||||||

Wild-type | Synapsin I^{−/} | |||||||

Excitatory | Inhibitory | Excitatory | Inhibitory | |||||

Control | 341 ± 66 (n = 10) | 270 ± 76 (n = 14) | 310 ± 46 (n = 12) | 335 ± 28 (n = 10) | ||||

Stimulated | 283 ± 45 (n = 12) | 259 ± 30 (n = 12) | 269 ± 50 (n = 8) | 304 ± 72 (n = 10) |

*

Different from the value for wild-type at *P* < 0.05. The mean ± SD of the number of synaptic vesicles/μm^{2} (*n* represents the number of synapses examined) is shown. *t* test was used to determine the significance of the changes.

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