ERPs in schizophrenic patients during word recognition task and reaction times.

Event-related brain potentials (ERPs) were recorded in 28 schizophrenic patients and 26 healthy controls during a word recognition task. In each trial, stimuli consisting of S1 (word) and S2 (word or non-word) were presented. The subjects were required to indicate whether S2 was a word or a non-word by pressing buttons.

The medial preoptic area is involved in both sexual arousal and performance in male rats: re-evaluation of neuron activity in freely moving animals.

A total of 74 single unit activities was recorded from the medial preoptic-anterior hypothalamic continuum (MPOA) during free copulatory behavior of male rats. Forty-six units (62.2%) showed changed activities during at least one phase of male copulatory movements; 26 units (35.

Effects of semantic context and event-related potentials: N400 correlates with inhibition effect.

Two experiments investigated the modulation of event-related brain potentials (ERPs) by semantic context. A prime-target pair was visually presented in each trial of a lexical decision task. For word targets, three types of relatedness conditions were employed: (1) Related word condition (e.

Modification of male rat copulatory behavior by lateral midbrain stimulation.

Effects of electrical stimulation of the lateral midbrain tegmentum (LMT) on the copulatory behavior of male rats were examined in our investigation of the role of the LMT in this behavior. Sexually experienced male rats (n = 15) that had been implanted with chronic electrodes under sodium pentobarbital anesthesia were individually tested for copulation with a receptive female under a 30 s on, 30 s off pattern of stimulation. The ejaculation latency, and mount and intromission frequencies decreased significantly during the stimulation tests, indicative of facilitation of copulation.

Deviate N200 component of event-related potentials in shuchaku-seikaku, a premorbid personality of depression.

Twenty-one healthy subjects with Shuchaku-Seikaku (SS), a premorbid personality of depression, and 44 control subjects were tested for event-related potentials using the auditory odd ball paradigm. A higher percent of the N200 component was evoked by frequent task-irrelevant stimuli in the Shuchaku-Seikaku (81.0%) subjects than in the controls (45.