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Development of Spontaneous and Evoked Behaviors in the Medicinal Leech by Shirley A. Reynolds; Kathleen A. French; Andreas Baader; William B. Kristan is a Neuroscience article available to read on EtoBox.

What is Development of Spontaneous and Evoked Behaviors in the Medicinal Leech about?

The ontogeny of behavior in an organism must reflect developmental events in the nervous system, and it thus provides a noninvasive measure of neuronal development. This approach may be particularly fruitful in the medicinal leech because the neuronal basis of several behaviors has been characterized in adult leeches, providing a rich background against which behavioral development can be interpreted. We have investigated the order in which behaviors arise during the period of embryonic development and have determined the time at which each behavior is first expressed. Some behaviors, such as lateral ridge formation, germinal plate bending, spiral twisting, and sidewinding, were produced spontaneously by embryos. Others, such as shortening, circumferential indentation, local bending, and elongation, occurred only when they were elicited by weak mechanical stimulation. Such stimulation rarely evoked a behavioral response in young embryos (at 45% of the time required for complete embryonic development, 45% ED), but by 80% ED embryos responded to nearly 100% of the stimuli presented. In embryos older than 50% ED, the behavior most frequently evoked by stimulation of the anterior end,

Who reads Development of Spontaneous and Evoked Behaviors in the Medicinal Leech?

Author

Shirley A. Reynolds; Kathleen A. French; Andreas Baader; William B. Kristan

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley; Research Square (ISSN 0021-9967)

Published

1998

Language

EN

Field

Neuroscience (Life Sciences)