Table 2.

CNAP variables determined from STX-sensitive (STX-S) and STX-resistant (STX-R) nerves isolated from farmed oysters fed with A. minutum (toxic-alga-exposed oysters) or with T. lutea (control oysters), before STX pre-treatment of nerves.

	Maximal Peak Amplitude (mV)		Half-Width (ms)		Area (mV.ms)		Time-to-Peak (ms)		Maximal Rise Slope (mV/ms)		Maximal Decay Slope (mV/ms)
	STX-S Nerves	STX-R Nerves	STX-S Nerves	STX-R Nerves	STX-S Nerves	STX-R Nerves	STX-S Nerves	STX-R Nerves	STX-S Nerves	STX-R Nerves	STX-S Nerves	STX-R Nerves
Control oysters (n = 8–10 nerves)	0.393 ± 0.051	0.317 ± 0.069 *	4.705 ± 0.387	5.294 ± 0.652 *	1.935 ± 0.292	1.923 ± 0.339	55.992 ± 0.301	56.004 ± 0.250	0.274 ± 0.068	0.176 ± 0.073 *	0.126 ± 0.030	0.086 ± 0.033 *
Toxic-alga-exposed oysters (n = 6–12 nerves)	0.387 ± 0.074	0.339 ± 0.083	5.154 ± 0.374	5.445 ± 0.915	1.891 ± 0.248	2.035 ± 0.377	56.389 ± 0.354	56.139 ± 0.308	0.215 ± 0.298	0.196 ± 0.038	0.133 ± 0.035	0.100 ± 0.050

* 0.01 < p < 0.05, STX-resistant versus SYX-sensitive nerves of control oysters.