Oculomotor phenomena in petit-mal.

Objective: To determine the temporal relationship among behavior, eye movements and respiration during absence seizures.

Method: This included simultaneous videorecording of a patient's face, EEG and respirogram, in 5 patients with absence seizures. Absence seizures were defined as a sudden lapse of consciousness with impairment of mental functions.

Motor cortex inhibition is not impaired in patients with Alzheimer's disease: evidence from paired transcranial magnetic stimulation.

Motor cortex excitability was studied by transcranial magnetic stimulation (TMS) in 17 patients with Alzheimer's disease (AD). Resting and active thresholds for TMS were significantly reduced in AD patients compared to young and aged healthy subjects. The maximum amplitude of the motor response evoked by TMS was also significantly increased in AD patients.

Corticomotoneuronal synaptic connections in normal man: an electrophysiological study.

In order to determine the mono- or oligosynaptic character of connections between pyramidal axons and individual spinal motor neurons, we constructed peri-stimulus time histograms (PSTHs) of the firing probability of voluntarily activated single motor units (SMUs) of various upper and lower limb muscles upon slightly suprathreshold transcranial anodal electrical stimulations of the motor cortex in normal subjects. Weak anodal cortical stimuli are known to activate preferentially fast-conducting pyramidal axons directly, bypassing cell bodies and cortical interneurons. A narrow bin width (0.