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Topic: discriminability

Seminar
1 seminar
ePoster
1 ePoster

In Cognition and Cognitive Psychology

Seminar · Cognition

Algorithmic advances in face matching: Stability of tests in atypical groups

Mirta Stantic · Department of Experimental Psychology, University of Oxford

Thu, Feb 18, 2021 · 16:00 UTC

Face matching tests have traditionally been developed to assess human face perception in the neurotypical range, but methods that underlie their development often make it difficult for these measures to be applied in atypical populations (developmental prosopagnosics, super recognizers) due to unadjusted difficulty. We have recently presented the development of the Oxford Face Matching Test, a measure that bases individual item-difficulty on algorithmically derived similarity of presented stimuli. The measure seems useful as it can be given online or in-laboratory, has good discriminability an

ePoster · Computational Neuroscience

Synaptic fluctuation induces representational drift while preserving discriminability

Kento Nakamura, Keita Endo, Hokto Kazama · Bernstein Conference 2024

A vast variety of sensory cues are represented as distinct patterns of neural responses in the brain. To retrieve memories associated with sensory cues, one would assume that the representations of sensory signals should be stable over time. However, recent development of population-level recording techniques has revealed that these representations can drift over time $^{1}$. To investigate the mechanisms and consequences of representational drift, we formulate a random feedforward network model $^{2,3}$ that incorporates stochastic fluctuations in membrane potential and synaptic strength $^{4