Insensitivity to reward shifts in zebrafish (Danio rerio) and implications for assessing affective states
Sern Loong Timothy Tan, Kathrine Ann Handasyde, Jean-Loup Rault, Michael Mendl
ANIMAL COGNITION | SPRINGER HEIDELBERG | Published : 2019
Theory and empirical findings predict that individuals in a negative affective state are more sensitive to unexpected reward loss and less sensitive to unexpected reward gain compared to individuals in a neutral or positive affective state. We explore the use of sensitivity to reward shifts measured during successive contrast tasks as an indicator of affect in zebrafish (Danio rerio). In line with the assumption that exposure to rewarding stimuli induces a relatively positive affective state compared to exposure to stimuli that they do not prefer, we confirmed that zebrafish prefer enriched over barren environments, suggesting that the enriched environment is associated with positive affecti..View full abstract
This research was funded by the Margaret Catto Award and K. Handasyde.