Re-Examination of Presumed Feeding Motor Activity in the Isolated Nervous System of Pleurobranchaea
Re-Examination of Presumed Feeding Motor Activity in the Isolated Nervous System of Pleurobranchaea
复制标题
重新检查侧鳃纲离体神经系统中假定的摄食运动活动
DOI：
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发表时间：
1982
期刊：
影响因子：
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通讯作者：
A. McClellan
中科院分区：
文献类型：
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作者：
A. McClellan
1.在大多数孤立的腹足类神经系统中，假定的摄食运动模式被认为是由颊根中交替的运动活动所代表，这是有节奏的神经根运动的基础。由于腹足类侧翼动物的这种运动伴随着几种类型的行为(McClellan，1979,1980,1982)，因此对这种动物孤立神经系统中假定的摄食运动活动进行了更详细的重新研究。2.在这里，交替的颊根活动被证明与取食以外的其他类型的行为有关，因此，在侧翼动物和其他腹足类动物中，并不是足够独特的活动作为取食的‘神经关联’。3.与大多数腹足动物孤立的神经系统只产生一种口腔节律不同，侧翼腹足动物的神经系统产生两种不同的口腔运动模式：(1)行为特征不明的缓慢的主要节奏，以及(2)相对较快的节奏的短暂时段，这是呕吐发作的基础。4.一般而言，由孤立的腹足类神经系统产生的口腔节律只有在其节律的特征仅是涉及口腔肿块的几种行为反应中的一种时才能被指定为一种功能。
1.In most isolated gastropod nervous systems, presumed feeding motor patterns are thought to be represented by the alternating motor activity in buccal roots, which underlies rhythmic radula movement. Since this movement accompanies several types of behaviour in the gastropod Pleurobranchaea (McClellan, 1979, 1980, 1982), the presumed feeding motor activity in the isolated nervous system of this animal was re-examined in more detail. 2.Alternating buccal root activity was shown here to be associated with other types of behaviour besides feeding, and is, therefore, not sufficiently unique to serve as a ‘neural correlate’ for feeding in Pleurobranchaea and presumably other gastropods. 3.Unlike the isolated nervous systems of most gastropods, which generate only one buccal rhythm, that of Pleurobranchaea generates two different buccal motor patterns which alternate: (1) a slow ‘primary’ rhythm whose behavioural identity is unclear, and (2) brief periods of a relatively fast rhythm which underlie bouts of vomiting. 4.In general, a buccal rhythm generated by an isolated gastropod nervous system can only be assigned a function if there are features of the rhythm that are unique to only one of the several behavioural responses involving the buccal mass.