Evidence map›Paper›PMID 32522978›Full record

ArticleTranslational psychiatry2020

Atypical processing of tones and phonemes in Rett Syndrome as biomarkers of disease progression.

Olga V Sysoeva, Sophie Molholm, Aleksandra Djukic, Hans-Peter Frey, John J Foxe

Open access · goldAbstract read
In one paragraph

Article in Translational psychiatry, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
3.4field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 39 citations in OpenAlex.

  1. Variability in sensory processing and evoked potentials in Rett syndrome.medRxiv : the preprint server for health sciences · 2026
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  4. Visual Recovery Reflects Cortical MeCP2 Sensitivity in Rett Syndrome.Annals of clinical and translational neurology · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 2 countries.

Olga V SysoevaThe Cognitive Neurophysiology Laboratory, Ernest J. Del Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.
Sophie MolholmThe Cognitive Neurophysiology Laboratory, Ernest J. Del Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.
Aleksandra DjukicThe Rett Syndrome Center, Department of Neurology, Montefiore Medical Center & Albert Einstein College of Medicine, Bronx, NY, USA.
Hans-Peter FreyThe Cognitive Neurophysiology Laboratory, Departments of Pediatrics and Neuroscience, Albert Einstein College of Medicine & Montefiore Medical Center, Bronx, NY, USA.
John J FoxeThe Cognitive Neurophysiology Laboratory, Ernest J. Del Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA. john_foxe@urmc.rochester.edu.ORCID http://orcid.org/0000-0002-4300-3098
Albert Einstein College of Medicine · US

Funding

Support for the Rose F. Kennedy IDDRCU54HD090260 · NICHD · ALBERT EINSTEIN COLLEGE OF MEDICINE, INC · PI MOLHOLM, SOPHIE, WALKLEY, STEVEN UPSHAW · 2016 to 2020
$6.0M
Neurophysiology of Receptive Speech in Rett SyndromeR21DC012447 · NIDCD · ALBERT EINSTEIN COLLEGE OF MEDICINE · PI DJUKIC, ALEKSANDRA, FOXE, JOHN J · 2012 to 2013
$448k
NICHD NIH HHS U54 HD090260NIDCD NIH HHS R21 DC012447U.S. Department of Health & Human Services | NIH | National Institute on Deafness and Other Communication Disorders (NIDCD) DC012447
6 · The paper itself

Abstract

Due to severe motor impairments and the lack of expressive language abilities seen in most patients with Rett Syndrome (RTT), it has proven extremely difficult to obtain accurate measures of auditory processing capabilities in this population. Here, we examined early auditory cortical processing of pure tones and more complex phonemes in females with Rett Syndrome (RTT), by recording high-density auditory evoked potentials (AEP), which allow for objective evaluation of the timing and severity of processing deficits along the auditory processing hierarchy. We compared AEPs of 12 females with RTT to those of 21 typically developing (TD) peers aged 4-21 years, interrogating the first four major components of the AEP (P1: 60-90 ms; N1: 100-130 ms; P2: 135-165 ms; and N2: 245-275 ms). Atypicalities were evident in RTT at the initial stage of processing. Whereas the P1 showed increased amplitude to phonemic inputs relative to tones in TD participants, this modulation by stimulus complexity was absent in RTT. Interestingly, the subsequent N1 did not differ between groups, whereas the following P2 was hugely diminished in RTT, regardless of stimulus complexity. The N2 was similarly smaller in RTT and did not differ as a function of stimulus type. The P2 effect was remarkably robust in differentiating between groups with near perfect separation between the two groups despite the wide age range of our samples. Given this robustness, along with the observation that P2 amplitude was significantly associated with RTT symptom severity, the P2 has the potential to serve as a monitoring, treatment response, or even surrogate endpoint biomarker. Compellingly, the reduction of P2 in patients with RTT mimics findings in animal models of RTT, providing a translational bridge between pre-clinical and human research.

Indexed as

Rett SyndromeAnimalsBiomarkersDisease ProgressionElectroencephalographyEvoked Potentials, AuditoryFemaleHumansBiomarkers

Identifiers

PMID32522978
PMCPMC7287060
OpenAlexW3033637999

What OpenQuestion holds

Textmetadata
LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.