Document details

Uncertainty in olfactory decision-making

Author(s): Vicente, Maria Inês

Date: 2015

Persistent ID:

Origin: Repositório Institucional da UNL

Subject(s): Biology; Neuroscience; Biology; Neuroscience; Biology; Biology; Neuroscience; Neuroscience


Relationships between accuracy and speed of decision-making, or speed-accuracy tradeoffs (SAT), have been extensively studied. However, the range of SAT observed varies widely across studies for reasons that are unclear. Several explanations have been proposed, including motivation or incentive for speed vs. accuracy, species and modality but none of these hypotheses has been directly tested. An alternative explanation is that the different degrees of SAT are related to the nature of the task being performed. Here, we addressed this problem by comparing SAT in two odor-guided decision tasks that were identical except for the nature of the task uncertainty: an odor mixture categorization task, where the distinguishing information is reduced by making the stimuli more similar to each other; and an odor identification task in which the information is reduced by lowering the intensity over a range of three log steps. (...)

Document Type Doctoral thesis
Language English
Advisor(s) Mainen, Zachary
Contributor(s) Vicente, Maria Inês
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