Related Experiment Video
Updated: Jun 10, 2026

Preparation of Acute Hippocampal Slices from Rats and Transgenic Mice for the Study of Synaptic Alterations during Aging and Amyloid Pathology
Published on: March 23, 2011
Age-related increase of sI(AHP) in prefrontal pyramidal cells of monkeys: relationship to cognition
1Department of Anatomy and Neurobiology, Boston University School of Medicine, 72 East Concord St, Boston, MA 02118, USA. jluebke@bu.edu
Abstract:
Reduced excitability, due to an increase in the slow afterhyperpolarization (and its underlying current sI(AHP)), occurs in CA1 pyramidal cells in aged cognitively-impaired, but not cognitively-unimpaired, rodents. We sought to determine whether similar age-related changes in the sI(AHP) occur in pyramidal cells in the rhesus monkey dorsolateral prefrontal cortex (dlPFC). Whole-cell patch-clamp recordings were obtained from layer 3 and layer 5 pyramidal cells in dlPFC slices prepared from young (9.6 ± 0.7 years old) and aged (22.3 ± 0.7 years old) behaviorally characterized subjects. The amplitude of the sI(AHP) was significantly greater in layer 3 (but not layer 5) cells from aged-impaired compared with both aged-unimpaired and young monkeys, which did not differ. Aged layer 3, but not layer 5, cells exhibited significantly increased action potential firing rates, but there was no relationship between sI(AHP) and firing rate. Thus, in monkey dlPFC layer 3 cells, an increase in sI(AHP) is associated with age-related cognitive decline; however, this increase is not associated with a reduction in excitability.
More Related Videos
07:03Evaluation of Hemisphere Lateralization with Bilateral Local Field Potential Recording in Secondary Motor Cortex of Mice
Published on: July 31, 2019
14:47Combined Peripheral Nerve Stimulation and Controllable Pulse Parameter Transcranial Magnetic Stimulation to Probe Sensorimotor Control and Learning
Published on: April 21, 2023
Related Concept Videos
Role of Cerebellum and Prefrontal Cortex in Memory
Alzheimer Disease ll: Pathophysiology