Analysis of the Prevalence of Ventricular Late Potentials in the Late Phase of Myocardial Infarction Based on the Site of Infarction

OBJECTIVE: The initial site of myocardial infarction (MI) may influence the prevalence of ventricular late potentials (VLP), high-frequency signals, due to the time course of ventricular activation. The prevalence of VLP in a period of more than 2 years after acute MI was assessed focusing on the initially injured wall . METHODS: The prevalence of VLP in a late phase after MI (median of 924 days) in anterior/antero-septal and inferior/infero-dorsal wall lesion was analyzed using signal-averaged electrocardiogram in time domain. The diagnostic performance of the filters employed for analysis on was tested at high-pass cut-off frequencies of 25 Hz, 40 Hz and 80 Hz. RESULTS: The duration of the ventricular activation and its terminal portion were larger in inferior than anterior infarction, at high-pass cut-off frequencies of 40 Hz and 80 Hz. In patients with ventricular tachycardia, these differences were more remarked. The prevalence of ventricular late potentials was three times greater in inferior than anterior infarction. CONCLUSION: Late after myocardial infarction, the prevalence and the duration of ventricular late potentials are greater in lesions of inferior/infero-dorsal than anterior/antero-septal wall confirming their temporal process, reflecting their high-frequency content.

Interactions of bottom-up and top-down processes in human evoked gamma-band activity

Gamma-band activity, EEG, top-down, bottom-up

Selection of information in auditory virtual reality

ERP, auditory virtual reality, dichotic listening, selective auditory attention, cocktail-party phenomenon, HRTF

Firing activities of auditory cortical neurons during categorical task performance in behaving monkeys

Category, frequency contour, monkey, auditory cortex, neuron, spike

Social intelligence and auditory intelligence : useful constructs?

Social intelligence, auditory intelligence, diagnostics, emotional intelligence, musical abilities, performance test, social perception, social memory, social understanding, voice, emotions research, social competences

Modell zur Arbeitsplatzwahl als Grundlage für ein Relationship-Marketing-Konzept im Bereich high-potentials

Recruitment, high potentials, job choice, relationship marketing, employer image, trust, familiarity, segmentation, logistic regression, structural equation models

Behavioural and cognitive relevance of evoked gamma-band responses in ADHD patients and healthy children

Magdeburg, Univ., Fak. für Natuwiss., Diss., 2009

Diagnosis of Rejection by Analyzing Ventricular Late Potentials in Heart Transplant Patients

Background: Heart transplant rejection originates slow and fragmented conduction. Signal-averaged ECG (SAECG) is a stratification method in the risk of rejection. Objective: To develop a risk score for rejection, using SAECG variables. Methods: We studied 28 transplant patients. First, we divided the sample into two groups based on the occurrence of acute rejection (5 with rejection and 23 without). In a second phase, we divided the sample considering the existence or not of rejection in at least one biopsy performed on the follow-up period (rejection pm1: 18 with rejection and 10 without). Results: On conventional ECG, the presence of fibrosis was the only criterion associated with acute rejection (OR = 19; 95% CI = 1.65-218.47; p = 0.02). Considering the rejection pm1, an association was found with the SAECG variables, mainly with RMS40 (OR = 0.97; 95% CI = 0.87-0.99; p = 0.03) and LAS40 (OR = 1.06; 95% IC = 1.01-1.11; p = 0.03). We formulated a risk score including those variables, and evaluated its discriminative performance in our sample. The presence of fibrosis with increasing of LAS40 and decreasing of RMS40 showed a good ability to distinguish between patients with and without rejection (AUC = 0.82; p < 0.01), assuming a cutoff point of sensitivity = 83.3% and specificity = 60%. Conclusion: The SAECG distinguished between patients with and without rejection. The usefulness of the proposed risk score must be demonstrated in larger follow-up studies.

Basic components of cortical processing are shared in visual and auditory modality

Magdeburg, Univ., Fak. für Naturwiss., Diss., 2009

Bewertung des Potentials der Bevorzugten Kristallisation zur Enantiomerentrennung

Magdeburg, Univ., Fak. für Verfahrens- und Systemtechnik, Diss., 2010

Social intelligence and auditory intelligence : useful constructs?

Social intelligence, auditory intelligence, diagnostics, emotional intelligence, musical abilities, performance test, social perception, social memory, social understanding, voice, emotions research, social competences

Auditory gating in the ventral striatum and auditory cortex : the role of stimulus-locking and the influence of discrimination learning

Magdeburg, Univ., Fak. für Naturwiss., Diss., 2014

Thalamocortical and corticothalamic interactions of the auditory cortex in the Mongolian gerbil (Meriones unguiculatus)

Magdeburg, Univ., Fak. für Naturwiss., Diss., 2015

Auditory region in bats including Icaronycteris index.

v.58:no.9(1971)

The auditory region (ossicles, sinuses) in gliding mammals and selected representatives of non-gliding genera.

v.58:no.5(1971)