通过改变蜜蜂（意大利蜜蜂）周围的磁场和磁石候选物来调节脉冲频率。

Modulation of spike frequencies by varying the ambient magnetic field and magnetite candidates in bees (Apis mellifera).

Schiff H

Dipartimento di Informatica, Università di Torino, Turin, Italy.

Comp Biochem Physiol A Comp Physiol. 1991;100(4):975-85. doi: 10.1016/0300-9629(91)90325-7.

Abstract

Spontaneous activity was recorded from neurons in the second abdominal ganglion of bees. 2. Thirty per cent intensity modulations of the horizontal component of the background magnetic field provoked changes in the firing pattern of single neurons. 3. Two classes of neurons were distinguished and confirmed by statistical analysis. 4. Electron dense material in hairs and in or near the cutex may be single domain (SD) and superparamagnetic (SPM) magnetite. 5. A hypothesis is proposed for magnetoreception. Magnetite would act as an amplifier of the external magnetic induction changes. 6. The amplified magnetic field would influence neuronal elements only in restricted regions near the magnetite.

摘要

记录了蜜蜂第二腹神经节中神经元的自发活动。2. 背景磁场水平分量30%的强度调制引发了单个神经元放电模式的变化。3. 区分出两类神经元，并通过统计分析得到证实。4. 毛发以及表皮内或其附近的电子致密物质可能是单畴（SD）和超顺磁性（SPM）磁铁矿。5. 提出了一种磁感受假说。磁铁矿将作为外部磁感应变化的放大器。6. 放大后的磁场仅会在磁铁矿附近的受限区域影响神经元成分。