CNS 2019 Workshop, 17 July, Barcelona

Modelling sequential biases in perceptual decisions

Timing: 17th of July 2019,9.30 till 18.30

Location: Room S3


Alexandre Hyafil (UPF, CRM, Barcelona): alexandre . hyafil (at)

Jaime de la Rocha (Idibaps, Barcelona): jrochav (at)

Workshop duration: one day


The workshop will gather scientists with different perspectives on the subject of serial perceptual biases with a focus on either modelling biases (at different levels) or developing theoretical accounts that might explain them, from normative accounts to physiological mechanisms. The existence of such biases has been known for decades but up to few years ago, their analysis was confined to a small psychology community. In the last 2-3 years, there has been a surge of studies from neuroscientists over various specialties. We now realize that sequential decision biases are more complex and ubiquitous as previously thought, and that they offer a window into cognitive mechanisms at the interface of perceptual-based and value-based decision-making. The workshop will provide an enriching mix of experimental models (healthy humans, human patients, primates, rodents), modalities/systems (vision, audition, working memory) and modelling scales (spiking networks, latent variable models, Bayesian models).

Schedule :

  • 9:30 - 9:40: Opening remarks
  • 9:40 - 10:10: Gabriela Mochol (UPF, Barcelona): “Representation of choice bias in the activity of prearcuate gyrus during perceptual decision making”
  • 10:10 - 10:40: Anke Braun (University Medical Center Hamburg), “Adaptive History Biases Result from Confidence-Weighted Accumulation of past Choices”
  • 10:40 - 11:10: Ainhoa Hermoso-Mendizabal (IDIBAPS, Barcelona), “The neural circuitry of history dependent choice biases in rat perceptual decisions”
  • 11:10 - 11:40: Coffee break
  • 11:40 - 12:10: Guido Marco Cicchini (Institute of Neuroscience, Pisa), "Serial effects reflect an optimizing mechanism and can occur in perception"
  • 12:10 - 12:40: Florent Meyniel (CEA, Paris), "Neuro-computational origins of sequential effects in predictions"
  • 12:40 - 1:10: Lior Lebovich (Hebrew Univ Jerusalem) “Idiosyncratic choice bias naturally emerges from intrinsic stochasticity in neuronal dynamics ”
  • 1:10 - 3:00 : Lunch break
  • 3:00-3:30: Matthias Fristche (Donders, Nijmegen), “Opposite effects of recent history on perception and decision and their modulation by attention”
  • 3:30-4:00 Heike Stein (IDIBAPS, Barcelona): “'The influence of NMDA receptor dysfunction on serial biases in working memory”
  • 4:00-4:30 Athena Akrami (UCL, London), “Timescales of neuronal sensory representation in decision making and working memory tasks“
  • 4:30-5:00 Coffee break
  • 5:00 - 5:30 Vincent Adam (, Cambridge, UK) "Normative models and Statistical methods to study the effect of sensory history in perception in discrimination tasks"
  • 5:30 - 6:30 Discussion

Some relevant recent references from our speakers:

Akrami, A., Kopec, C. D., Diamond, M. E., & Brody, C. D. (2018). Posterior parietal cortex represents sensory history and mediates its effects on behaviour. Nature.

Meyniel, F., Maheu, M., Dehaene, S., Cleeremans, A., Kouider, S., & Devinsky, O. (2016). Human Inferences about Sequences: A Minimal Transition Probability Model. PLOS Computational Biology, 12(12), e1005260.

Braun, A., Urai, A. E., & Donner, T. H. (2018). Adaptive History Biases Result from Confidence-weighted Accumulation of Past Choices. The Journal of Neuroscience, 38(10), 2418–2429.

Lebovich, L., Darshan, R., Lavi, Y., Hansel, D., & Loewenstein, Y. (2018). Idiosyncratic choice bias in decision tasks naturally emerges from neuronal network dynamics. BioRxiv, 284877.

Fritsche, M., Mostert, P., & de Lange, F. P. (2017). Opposite Effects of Recent History on Perception and Decision. Current Biology, 27(4), 590–595.

Hermoso-Mendizabal, A., Hyafil, A., Rueda-Orozco, P. E., Jaramillo, S., Robbe, D., & Rocha, J. de la. (2018). Response outcomes gate the impact of expectations on perceptual decisions. BioRxiv, 433409.

Cicchini, G.M., Mikellidou, K. & Burr, D. (2018). The functional role of serial dependence, Proceedings of the Royal Society of London B . PDF

Lieder, I., Adam, V., Frenkel, O., Jaffe-Dax, S., Sahani, M., & Ahissar, M. (2019). Perceptual bias reveals slow-updating in autism and fast-forgetting in dyslexia. Nature neuroscience, 22(2), 256.