American Society of Hirudotherapy

Building exploration with leeches Hirudo verbana

Bionics study published in Biosystems (2015)

Last Updated: June 18, 2026Reviewed by: ASH Editorial Board
Research article — evidence reviewArticle reference
Evidence: Preclinical (animal)Genomics & ProteomicsAdamatzky A, Sirakoulis GC · Bio Systems, 2015

Abstract

Safe evacuation of people from building and outdoor environments, and search and rescue operations, always will remain actual in course of all socio-technological developments. Modern facilities offer a range of automated systems to guide residents towards emergency exists. The systems are assumed to be infallible. But what if they fail? How occupants not familiar with a building layout will be looking for exits in case of very limited visibility where tactile sensing is the only way to assess the environment? Analogous models of human behaviour, and socio-dynamics in general, are provided to be fruitful ways to explore alternative, or would-be scenarios. Crowd, or a single person, dynamics could be imitated using particle systems, reaction-diffusion chemical medium, electro-magnetic fields, or social insects. Each type of analogous model offer unique insights on behavioural patterns of natural systems in constrained geometries. In this particular paper we have chosen leeches to analyse patterns of exploration. Reasons are two-fold. First, when deprived from other stimuli leeches change their behavioural modes in an automated regime in response to mechanical stimulation. Therefore leeches can give us invaluable information on how human beings might behave under stress and limited visibility. Second, leeches are ideal blueprints of future soft-bodied rescue robots. Leeches have modular nervous circuitry with a rich behavioral spectrum. Leeches are multi-functional, fault-tolerant with autonomous inter-segment coordination and adaptive decision-making. We aim to answer the question: how efficiently a real building can be explored and whether there any dependencies on the pathways of exploration and geometrical complexity of the building. In our case studies we use templates made on the floor plan of real building.

Abstract sourced from PubMed (NCBI) for the cited record. See the original publication for the authoritative version.

Publication typeJournal Article
Indexed MeSH termsAnimalsLeechesModels, Animal

Summary

Uses Hirudo verbana exploration patterns in scaled building floor plans to derive bio-inspired models for evacuation behavior and rescue-robot blueprints.

Why This Matters for Hirudotherapy

This study used leeches as a biological model to analyze patterns of building exploration and to draw analogies to human evacuation behavior under low-visibility emergency conditions, as well as to propose leeches as blueprints for soft-bodied rescue robots. The authors selected leeches because they change behavioral modes in an automated regime in response to mechanical stimulation and possess modular nervous circuitry with a rich behavioral spectrum. However, this research has no defensible link to hirudotherapy, leech-derived therapeutics, or any therapeutic application central to ASH's domain. The abstract does not even specify the leech species used, and the work is concerned solely with behavioral modeling and robotics.

Citation

Building exploration with leeches Hirudo verbana.

Adamatzky A, Sirakoulis GC · Bio Systems, 2015

Added to ASH library: May 27, 2026 · Site last updated: June 18, 2026

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