• Publications
  • Influence
Collective memory and spatial sorting in animal groups.
TLDR
The first evidence for collective memory is presented in such animal groups (where the previous history of group structure influences the collective behaviour exhibited as individual interactions change) during the transition of a group from one type of collective behaviour to another.
Effective leadership and decision-making in animal groups on the move
TLDR
It is revealed that the larger the group the smaller the proportion of informed individuals needed to guide the group, and that only a very small proportion ofinformed individuals is required to achieve great accuracy.
From Disorder to Order in Marching Locusts
TLDR
This work confirmed the prediction of a rapid transition from disordered to ordered movement and identified a critical density for the onset of coordinated marching in locust nymphs, and demonstrated a dynamic instability in motion at densities typical of locusts in the field.
Inferring the structure and dynamics of interactions in schooling fish
TLDR
Comparing data from two-fish and three-fish shoals challenges the standard assumption that individual motion results from averaging responses to each neighbor considered separately and finds no evidence for explicit matching of body orientation.
Collective cognition in animal groups
  • I. Couzin
  • Psychology
    Trends in Cognitive Sciences
  • 31 January 2009
Automated image-based tracking and its application in ecology.
Inherent noise can facilitate coherence in collective swarm motion
TLDR
A coarse-grained approach to the study of directional switching in a self-propelled particle model assuming an underlying one-dimensional Fokker–Planck equation for the mean velocity of the particles is adopted, revealing that individual locusts appear to increase the randomness of their movements in response to a loss of alignment by the group.
Collective States, Multistability and Transitional Behavior in Schooling Fish
TLDR
This study demonstrates that collective motion can be effectively mapped onto a set of order parameters describing the macroscopic group structure, revealing the existence of at least three dynamically-stable collective states; swarm, milling and polarized groups.
Quorum decision-making facilitates information transfer in fish shoals
TLDR
It is shown that effective and accurate information transfer in groups may be gained only through nonlinear responses of group members to each other, thus highlighting the importance of quorum decision-making.
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