RATIONALE: Touchscreens are widely used to examine rodent cognition. Current paradigms require animals to view stimuli and nose poke at an appropriate touchscreen location. After responding, there is little screen interaction and, as infra-red touchscreens eliminate the need for physical contact, minimal somatosensory feedback. It is therefore unclear if touchscreens can support the vigorous, repetitive responding required in paradigms like progressive ratio (PR) for assessing motivation and effort-related choice (ERC) for assessing decision-making. OBJECTIVES: This study aims to adapt and validate PR and ERC for the rodent touchscreen. METHODS: Male C57Bl/6 @entity19 were trained until responding on PR stabilised. @entity4944 , @entity3216 and @entity11641 were administered via the intraperitoneal route to modify performance. @entity19 were transferred to ERC and paradigm parameters adjusted to demonstrate behavioural modification. ERC reward preference was assessed by home cage choice analysis. RESULTS: PR performance stabilised within seven sessions. @entity4944 (1  mg/kg) increased and @entity11641 (0.3  mg/kg) decreased performance by 63 and 28  %, respectively, with a 20-min injection-test interval. @entity3216 (50  mg/kg) decreased performance by 19  % following a 40-min injection-test interval. Increasing ERC operant requirements shifted responding from the operant response-dependent preferred reward towards the freely available alternative. CONCLUSIONS: Vigorous, repetitive responding is sustainable in touchscreen PR and ERC and task validation mirrors non-touchscreen versions. Thus, motivation and reward-related decision-making can be measured directly with touchscreens and can be evaluated prior to cognitive testing in the same apparatus to avoid confounding by motivational factors.

Motivational assessment of XXXX using the touchscreen operant testing system: effects of dopaminergic drugs.

@entity19 :: ('10090', 'Species') :: ['mice', 'Mice'] @entity4944 :: ('MESH:D000661', 'Chemical') :: ['Amphetamine'] @entity11641 :: ('MESH:D020891', 'Chemical') :: ['raclopride'] @entity3216 :: ('MESH:D013469', 'Chemical') :: ['Sulpiride', 'sulpiride']
@entity19 :: (10090,Species) :: ['mice']
