Individual Differences in Impulsive Choice and Timing in Female Rats - - PowerPoint PPT Presentation

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Individual Differences in Impulsive Choice and Timing in Female Rats - - PowerPoint PPT Presentation

Nov 28, 2023 369 likes •530 views

Exploring the Gender Gap: Individual Differences in Impulsive Choice and Timing in Female Rats Sarah L. Stuebing, Andrew T. Marshall, and Kimberly Kirkpatrick Department of Psychological Sciences Kansas State University Why Study Impulsive

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Exploring the Gender Gap: Individual Differences in Impulsive Choice and Timing in Female Rats

Sarah L. Stuebing, Andrew T. Marshall, and Kimberly Kirkpatrick Department of Psychological Sciences Kansas State University

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Why Study Impulsive Choice?

Impulsive choice plays a role in some maladaptive behaviors

obesity gambling substance abuse

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Sex Differences

Sex differences have been described in other work

Anker et al 2008 – female rats are more prone to impulsive in drug-seeking behavior Bayless and Daniel 2012 – rodent sex differences in attentional processes and inhibitory control Bayless and Daniel 2015 – neuroanatomical differences between male and female rats

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Impulsive Choice Task

5 sec 30 sec

Bisection Task

10 sec 30 sec 20 sec 30 sec 4 sec? 12 sec? 4, 5.26, 6.04, 6.93, 7.94, 9.12, 12 sec

Analysis of Female Choice and Timing

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Female and Male Choice

Smith, Marshall, Kirkpatrick, 2015.

Males Females

Self-control

Stuebing, Marshall, Kirkpatrick, In Prep.

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Female and Male: Choice Task Peak Responses

Male Female

Stuebing, Marshall, Kirkpatrick, In Prep. Marshall, Smith, Kirkpatrick, 2014.

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Temporal Bisection Task

Males Females

Marshall, Smith, Kirkpatrick, 2014. Stuebing, Marshall, Kirkpatrick, In Prep.

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Females Males

Smith, Marshall, Kirkpatrick, 2015. Stuebing, Marshall, Kirkpatrick, In Prep.

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Females Males

Smith, Marshall, Kirkpatrick, 2015. Stuebing, Marshall, Kirkpatrick, In Prep.

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Females Males

Smith, Marshall, Kirkpatrick, 2015. Stuebing, Marshall, Kirkpatrick, In Prep.

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Females Males

Smith, Marshall, Kirkpatrick, 2015. Stuebing, Marshall, Kirkpatrick, In Prep.

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Conclusions

 Female and male rats are similar in choice and timing behavior However, there may be underlying differences  Potential explanations include: exploration vs exploitation behavior local vs global rate of reinforcement sensitivity to reward neurobiological and biological differences

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Further Directions

 Temporal interventions in female rats See Poster 532.10/Z43 on Tuesday morning  Continued analysis Explorative behavior Weight impact  Direct female to male comparison

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Acknowledgments

 Reward, Timing and Decision Laboratory members  This work was funded by RO1-MH085739

Andrew Marshall

  • Dr. Kimberly Kirkpatrick