Figure 2 | Scientific Reports

Figure 2

From: Chill coma in the locust, Locusta migratoria, is initiated by spreading depolarization in the central nervous system

Figure 2

Chilling causes bursts of electrical activity in wing and hind leg muscles that originate in the CNS. (A) Emg recording from a right hind wing muscle and a left hind leg muscle during chilling from thoracic temperature of 30 °C to −1 °C. Note bursts of muscle activity during chilling. (B) Similar to A, but recording is from right and left hind wing muscles. (i) Before surgery. (ii) After cutting the nerve root supplying the left hind wing muscle. Note that the surgery eradicates large amplitude bursts of muscle activity during chilling (amplitude scales same as in i). (C) Similar to A and B, but recording is from left and right hind leg extensor tibialis muscles in a locust that had the nerve root supplying the left muscle cut the previous day. Note the lack of any muscle bursts associated with chilling in the left muscle.

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