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Different patterns of memory impairments accompany short- and longer-term maintenance on a high-energy diet.

Abstract

Intake of diets high in saturated fat and simple carbohydrates is associated with cognitive impairments in both humans and rodents. Here we report that feeding rats this type of high-energy (HE) diet has different effects on different types of learning and memory processes. Rats were first trained to solve spatial and nonspatial reference (RM) and working (WM) memory problems in a radial maze paradigm. Memory retention was assessed following six durations of free access to an HE or standard chow control diet ranging from 72-hr to 90 days. The results showed that performance on spatial RM and WM was impaired following only 72-hr on the HE diet and that the magnitude of the spatial RM and WM retention deficits were stable across all tests. On the other hand, stable deficits in nonspatial RM and WM emerged only after 30 days on the HE diet. The results suggest that the processes underlying spatial memory may be especially sensitive to disruption following intake of HE diets.

Authors+Show Affiliations

Department of Psychological Sciences and the Ingestive Behavior Research Center, West Lafayette, Indiana, USA. kanoski@sas.upenn.eduNo affiliation info available

Pub Type(s)

Journal Article
Research Support, N.I.H., Extramural

Language

eng

PubMed ID

20384410

Citation

Kanoski, Scott E., and Terry L. Davidson. "Different Patterns of Memory Impairments Accompany Short- and Longer-term Maintenance On a High-energy Diet." Journal of Experimental Psychology. Animal Behavior Processes, vol. 36, no. 2, 2010, pp. 313-9.
Kanoski SE, Davidson TL. Different patterns of memory impairments accompany short- and longer-term maintenance on a high-energy diet. J Exp Psychol Anim Behav Process. 2010;36(2):313-9.
Kanoski, S. E., & Davidson, T. L. (2010). Different patterns of memory impairments accompany short- and longer-term maintenance on a high-energy diet. Journal of Experimental Psychology. Animal Behavior Processes, 36(2), pp. 313-9. doi:10.1037/a0017228.
Kanoski SE, Davidson TL. Different Patterns of Memory Impairments Accompany Short- and Longer-term Maintenance On a High-energy Diet. J Exp Psychol Anim Behav Process. 2010;36(2):313-9. PubMed PMID: 20384410.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Different patterns of memory impairments accompany short- and longer-term maintenance on a high-energy diet. AU - Kanoski,Scott E, AU - Davidson,Terry L, PY - 2010/4/14/entrez PY - 2010/4/14/pubmed PY - 2010/7/9/medline SP - 313 EP - 9 JF - Journal of experimental psychology. Animal behavior processes JO - J Exp Psychol Anim Behav Process VL - 36 IS - 2 N2 - Intake of diets high in saturated fat and simple carbohydrates is associated with cognitive impairments in both humans and rodents. Here we report that feeding rats this type of high-energy (HE) diet has different effects on different types of learning and memory processes. Rats were first trained to solve spatial and nonspatial reference (RM) and working (WM) memory problems in a radial maze paradigm. Memory retention was assessed following six durations of free access to an HE or standard chow control diet ranging from 72-hr to 90 days. The results showed that performance on spatial RM and WM was impaired following only 72-hr on the HE diet and that the magnitude of the spatial RM and WM retention deficits were stable across all tests. On the other hand, stable deficits in nonspatial RM and WM emerged only after 30 days on the HE diet. The results suggest that the processes underlying spatial memory may be especially sensitive to disruption following intake of HE diets. SN - 1939-2184 UR - https://www.unboundmedicine.com/medline/citation/20384410/Different_patterns_of_memory_impairments_accompany_short__and_longer_term_maintenance_on_a_high_energy_diet_ L2 - http://content.apa.org/journals/xan/36/2/313 DB - PRIME DP - Unbound Medicine ER -