Topic: Accumulation of Evidence

According to the Accumulation of Evidence (AE) framework, reliable perceptual decisions are forged by integrating the evidence provided by each sensory sample independently of other samples. However, that framework, grounded on the mathematical formulation of the Sequential Ratio Probability Test (SPRT), does not consider that sensory samples can be conditionally dependent (i.e. partially redundant). Partial redundancies are ubiquitous in naturalistic environments. In such case, the normative framework is what we call the Accumulation of Unpredicted Evidence (AUE). In AUE, the current belief i

Many classic decision-making paradigms require animals to select between alternative choices by accumulating evidence over time. Traditional models of decision-making posit that such accumulation is reflected in the activity of single neurons whose activity ramps up or down with evidence. However, recent experiments suggest that, in many settings, neurons do not exhibit persistent, ramping activity but rather are transiently and sequentially activated. Motivated by experiments in a navigation-based, accumulation of evidence task in which sequential activity is observed across multiple regions