Table S1.

Summary of conditions and sample size

Behavioral task	Manipulation	Animal 1	Animal 2
Detection	Pulse width	4 UEA (cathodic: 4,968)	4 UEA (cathodic: 4,698)
			5 FMA (anodic: 18,460)
	Frequency	4 UEA (cathodic: 6,720)	4 UEA (cathodic: 7,496)
			4 FMA (anodic: 33,281)
	Duration		4 FMA (anodic: 13,337)
	Frequency and duration	4 UEA (cathodic: 8,898)	4 UEA (cathodic: 12,300)
	Frequency and pulse width	4 UEA (cathodic: 7,260)	4 UEA (cathodic: 7,334)
Discrimination	Standard amp (30 and 100 μA)	4 UEA (anodic: 4,200)	4 FMA (anodic: 8,001)
		4 FMA (anodic: 7,851)
	Frequency (standard: 70 μA)	4 UEA (cathodic: 6,331)	5 UEA (cathodic: 8,964)
	Duration (standard: 70 μA)	4 UEA (cathodic: 7,225)	5 UEA (cathodic: 10,082)