Recording of the neural activity induced by the electrical subthalamic stimulation using Ca2+ imaging

Atsushi Tamura, Tetsuya Yagi, Makoto Osanai

Research output: Contribution to journalArticle

Abstract

The basal ganglia (BG) have important roles in some kind of motor control and learning. Parkinson's disease is one of the motor impairment disease. Recently, to recover a motor severity in patients of Parkinsonism, the stimulus electrode is implanted to the subthalamic nucleus, which is a part of the basal ganglia, and the deep brain stimulation (DBS) is often conducted. However, the effects of the DBS on the subthalamic neurons have not been elucidated. Thus, to analyze the effects of the electrical stimulation on the subthalamic neurons, we conducted the calcium imaging at the mouse subthalamic nucleus. When the single stimulus was applied to the subthalamic nucleus, the intracellular calcium ([Ca2+]i transients were observed. In the case of application of the single electrical stimulation, the [Ca2+] i arose near the stimulus position. When 100 Hz 10-100 times tetanic stimulations were applied, the responded area and the amplitudes of [Ca 2+]i transients were increased. The [Ca2+] i transients were disappeared almost completely on the action potential blockade, but blockade of the excitatory and the inhibitory synaptic transmission had little effects on the responded area and the amplitudes of the [Ca2+]i transients. These results suggested that the electrical stimulation to the subthalamic neurons led to activate the subthalamic neurons directly but not via synaptic transmissions. Thus, DBS may change the activity of the subthalamic neurons, hence, may alter the input-output relationship of the subthalamic neurons

Original languageEnglish
JournalIEEJ Transactions on Electronics, Information and Systems
Volume131
Issue number1
DOIs
Publication statusPublished - 2011 Jan 1

Keywords

  • Basal ganglia
  • Deep brain stimulation
  • Parkinson's disease
  • Subthalamic nucleus

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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