Advertisement

Topics

Effects of significance of auditory location changes on event related brain potentials and pitch discrimination performance.

Summary of "Effects of significance of auditory location changes on event related brain potentials and pitch discrimination performance."

We examined effects of significance of task irrelevant changes in the location of tones on the mismatch negativity (MMN) and P3a event related brain potentials. The participants were to discriminate between two frequency modulated tones differing from each other in the direction of frequency glide. Each tone was delivered through one of five loudspeakers in front of the participant. On most trials, a tone was presented from the same location as the preceding tone, but occasionally the location changed. In the Varying Location Condition, these changes, although irrelevant with regard to pitch discrimination, were still significant for performance as the following tones were presented from the new location where attention had to be therefore shifted. In the Fixed Location Condition, the location changes were less significant as the tones following a location change were presented from the original location. In both conditions, the location changes were associated with decreased hit rates and increased reaction times in the pitch discrimination task. However, the hit rate decrease was larger in the Fixed Location Condition suggesting that in this condition the location changes were just distractors. MMN and P3a responses were elicited by location changes in both conditions. In the Fixed Location Condition, a P3a was also elicited by the first tone following a location change at the original location while the MMN was not. Thus, the P3a appeared to be related to shifting of attention in space and was not tightly coupled with MMN elicitation.

Affiliation

Journal Details

This article was published in the following journal.

Name: Brain research
ISSN: 1872-6240
Pages: 44-53

Links

DeepDyve research library

PubMed Articles [34691 Associated PubMed Articles listed on BioPortfolio]

Electrophysiological basis of reading related phonological impairment in Chinese speakers with schizophrenia: An ERP study.

It has been reported in alphabetic languages that individuals with schizophrenia showed language-related cognitive impairments including phonological deficits, which were in turn associated with clini...

Effects of white noise on event-related potentials in somatosensory Go/No-go paradigms.

Exposure to auditory white noise has been shown to facilitate human cognitive function. This phenomenon is termed stochastic resonance, and a moderate amount of auditory noise has been suggested to be...

Looking for a Location: Dissociated Effects of Event-Related Plausibility and Verb-Argument Information on Predictive Processing in Aphasia.

This study examined the influence of verb-argument information and event-related plausibility on prediction of upcoming event locations in people with aphasia, as well as older and younger, neurotypic...

Consequences matter: Self-induced tones are used as feedback to optimize tone-eliciting actions.

Experimental paradigms investigating the processing of self-induced stimuli are often based on the implicit assumption that motor processes are invariable regardless of their consequences: It is presu...

Intentional switching in auditory selective attention: Exploring age-related effects in a spatial setup requiring speech perception.

Using a binaural-listening paradigm, age-related differences in the ability to intentionally switch auditory selective attention between two speakers, defined by their spatial location, were examined....

Clinical Trials [8280 Associated Clinical Trials listed on BioPortfolio]

Phase II Study of the Multichannel Auditory Brain Stem Implant for Deafness Following Surgery for Neurofibromatosis 2

OBJECTIVES: I. Define the tonotopocity of multichannel brain stem stimulation and use this information to better program the auditory brain stem implant for an individual. II. Optimize...

Role of the Auditory Efferent System in Auditory Perceptual Learning

The purpose of this study is to determine how changes in speech perception resulting from a computerized auditory training program are related to concurrent changes in auditory brainstem f...

Comparative Effects of Two Anesthetic Techniques on Auditory Brain Response in Children

This will be a prospective, blinded, cross-over study to compare the effects of two anesthetic techniques on the interpretability of auditory brainstem response testing in children.

Monitoring Brain Waves in Response to Visual and/or Auditory Stimulation in Parkinson's Disease Patients

Voltage fluctuation as a result of brain activity will be recorded into the computer using an EEG device.

Audition After a Lesion and in Migraine. (AuditionPostLesion)

The project studies auditory processing after brain damage (in temporal and/or frontal areas) and in migraine. The auditory processes investigated are attention, short-term memory, sound-i...

Medical and Biotech [MESH] Definitions

A late-appearing component of the event-related potential. P300 stands for a positive deflection in the event-related voltage potential at 300 millisecond poststimulus. Its amplitude increases with unpredictable, unlikely, or highly significant stimuli and thereby constitutes an index of mental activity. (From Campbell, Psychiatric Dictionary, 6th ed)

Surgical insertion of an electronic hearing device (AUDITORY BRAIN STEM IMPLANTS) with electrodes to the cochlea nucleus in the BRAIN STEM rather than to the inner ear as in COCHLEAR IMPLANTATION.

The recorded electrical responses from nerve, muscle, SENSORY RECEPTOR, or area of the CENTRAL NERVOUS SYSTEM following stimulation. They range from less than a microvolt to several microvolts. The evoked potential can be auditory (EVOKED POTENTIALS, AUDITORY), somatosensory (EVOKED POTENTIALS, SOMATOSENSORY), visual (EVOKED POTENTIALS, VISUAL), or motor (EVOKED POTENTIALS, MOTOR), or other modalities that have been reported. Often used synonymously to event-related potentials which are associated with higher level cognitive processes.

Electrical waves in the CEREBRAL CORTEX generated by BRAIN STEM structures in response to auditory click stimuli. These are found to be abnormal in many patients with CEREBELLOPONTINE ANGLE lesions, MULTIPLE SCLEROSIS, or other DEMYELINATING DISEASES.

The therapy technique of providing the status of one's own AUTONOMIC NERVOUS SYSTEM function (e.g., skin temperature, heartbeats, brain waves) as visual or auditory feedback in order to self-control related conditions (e.g., hypertension, migraine headaches).

Quick Search
Advertisement
 


DeepDyve research library

Relevant Topics

Hearing
Hearing, auditory perception, or audition is the ability to perceive sound by detecting vibrations, changes in the pressure of the surrounding medium through time, through an organ such as the ear. Sound may be heard through solid, liquid, or gaseous mat...

Alzheimer's Disease
Of all the types of Dementia, Alzheimer's disease is the most common, affecting around 465,000 people in the UK. Neurons in the brain die, becuase  'plaques' and 'tangles' (mis-folded proteins) form in the brain. People with Al...


Searches Linking to this Article