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Figure 5 | EvoDevo

Figure 5

From: Crocodylians evolved scattered multi-sensory micro-organs

Figure 5

Electrophysiological recordings of crocodylian integumentary sensory organs. Representative traces of electrical activity of Nile crocodile postcranial and cranial integumentary sensory organs (ISOs) (left and middle panels), and spectacled caiman cranial ISOs (right panels) in response to: increasing mechanical stimulus; increasing (from 25°C to 55°C) or decreasing (from 25°C to 10°C) thermal stimuli, acidic (HCl) or alkaline (NaOH) pH stimuli; chemical stimulus (2-APB); and hyper-osmotic stimuli (NaCl or KCl). Gray triangles (for increasing or decreasing stimuli) and rectangles (for constant stimuli) indicate the intensity and period of stimulation. Gray arrowheads indicate the beginning of visible positive responses. Electrophysiological measurements were performed on single ISOs. Scale bars: vertical, 10 μV; horizontal, 10 s.

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