Visuospatial planning in the travelling salesperson problem: A connectionist account of normal and impaired performance

Simone Cutini, Andrea Di Ferdinando, Demis Basso, Patrizia Silvia Bisiacchi, Marco Zorzi

Research output: Contribution to journalArticle

Abstract

Planning is a fundamental cognitive function frequently employed in common daily activities. The Travelling Salesperson Problem (TSP), in which participants decide what order between a number of locations optimizes total travel distance, is a paradigm that allows the study of planning and strategy choice. In the TSP, subjects adopt visuo-spatial heuristics to perform the task and operate a continuous monitoring to adapt their behaviour. We present a connectionist model of the TSP that simulates bottom-up and top-down influences observed in the execution of the task. The model accounts for the continuous monitoring observed in healthy participants, and, after a simulated lesion, it also accounts for the decrease of heuristic switching observed in frontal patients and in normal subjects under repetitive transcranial magnetic stimulation (rTMS) over frontal lobe.

Original languageEnglish
Pages (from-to)194-217
Number of pages24
JournalCognitive Neuropsychology
Volume25
Issue number2
DOIs
Publication statusPublished - Mar 2008

ASJC Scopus subject areas

  • Psychology(all)
  • Cognitive Neuroscience
  • Experimental and Cognitive Psychology

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