Clinical Research Directory

Chinese-Specific Speech Imagery Coding Using High-Density ECoG

The goal of this study is to investigate whether high-density electrocorticography (ECoG) signals recorded from the surface of the brain can be used to decode neural representations of Mandarin Chinese speech features, including lexical tone, without requiring overt speech movements. The study focuses on the development and evaluation of decoding algorithms based on neural activity recorded during clinically indicated neurosurgical procedures. The main questions it aims to answer are: Can high-density ECoG signals be decoded to reconstruct neural representations of Mandarin Chinese speech features, particularly lexical tone? Can neural activity recorded during silent auditory speech imagery be decoded to reconstruct tone-specific speech representations without actual articulation? The study includes two groups of adult patients with neurological conditions who require cortical electrode placement as part of clinically indicated care: A intraoperative high-density ECoG temporary coverage group, enrolling approximately 50 patients with functional-area glioma or drug-resistant epilepsy who undergo awake neurosurgery with temporary high-density ECoG coverage for clinical functional mapping. A permanent high-density ECoG implantation group, enrolling approximately 10 patients with severe speech or language impairment caused by neurological conditions such as stroke, brain tumors, amyotrophic lateral sclerosis (ALS), or locked-in syndrome, who receive permanent high-density cortical electrode implantation for long-term monitoring. Participants will: Complete preoperative clinical assessments as part of standard medical care, including brain imaging, language function evaluation, and routine neurological assessments Undergo clinically indicated awake neurosurgical procedures during which high-density ECoG electrodes are placed on the cortical surface for clinical functional localization Perform language-related tasks, such as listening to speech, imagining speech, and limited spoken responses, while brain electrical activity is recorded for approximately 20-30 minutes during surgery, without altering standard surgical procedures For participants in the permanent implantation group, participate in long-term follow-up visits approximately every 2 weeks or monthly for up to 12 months after surgery, including evaluation of signal quality and research-related analysis and optimization of decoding algorithms All surgical procedures involving temporary or permanent electrode placement are performed for clinical indications and have been approved through institutional ethical and scientific review. Participation in this study does not alter standard clinical care for the temporary recording group and does not require additional clinical procedures beyond routine treatment. This research aims to support the long-term development of silent brain-to-speech communication technologies for individuals with severe speech or motor impairments and to improve understanding of how frontal, parietal, and temporal brain regions represent imagined speech in tonal languages such as Mandarin Chinese.

ACURES: Acoustic and Respiratory Parameters for Dysarthria Assessment

The goal of this observational study is to describe speech and breathing patterns in adults after acquired brain injury (ABI) and understand how these patterns relate to the presence, severity, and type of dysarthria. The main questions it aims to answer are: * What changes in voice and breathing are observed in adults with dysarthria after ABI? * Can combining acoustic, respiratory, and clinical assessments help identify dysarthria severity and subtype? Participants will: * Have their speech recorded to measure voice and articulation features, such as pitch, clarity, and the ability to sustain sounds. * Perform breathing tests using a spirometer to assess lung function. * Complete the Frenchay Dysarthria Assessment-2 (FDA-2), adapted to Spanish, to classify dysarthria type and severity. About 97 to 101 participants will take part. The results will help speech therapists better detect, evaluate, and treat dysarthria in adults after brain injury.

Connect-One: Early Feasibility Study of Connexus® Brain-Computer Interface (BCI)

The Connect-One Study is an early feasibility study to obtain preliminary device safety information for the Connexus Brain-Computer Interface (BCI). The Connexus BCI is intended to be used as: (1) an assistive communication device to decode imagined language correlates and speech for patients with impaired communication as a result of severe loss of voluntary motor control; and (2) to provide control of computer devices for individuals with severe loss of voluntary motor control of the upper extremity.

Feasibility of the BrainGate2 Neural Interface System in Persons With Tetraplegia

The purpose of this study is to obtain preliminary device safety information and demonstrate proof of principle (feasibility) of the ability of people with tetraplegia to control a computer cursor and other assistive devices with their thoughts.

Feasibility of the BrainGate2 Neural Interface System in Persons With Tetraplegia (BG-Speech-02)

The goal of this study is to improve our understanding of speech production, and to translate this into medical devices called intracortical brain-computer interfaces (iBCIs) that will enable people who have lost the ability to speak fluently to communicate via a computer just by trying to speak.

Cognitive Reserve and Response to Speech-Language Intervention in Bilingual Speakers With Primary Progressive Aphasia

Difficulties with speech and language are the first and most notable symptoms of primary progressive aphasia (PPA). While there is evidence that demonstrates positive effects of speech-language treatment for individuals with PPA who only speak one language (monolinguals), there is a significant need for investigating the effects of treatment that is optimized for bilingual speakers with PPA. This stage 2 efficacy clinical trial seeks to establish the effects of culturally and linguistically tailored speech-language interventions administered to bilingual individuals with PPA. The overall aim of the intervention component of this study is to establish the relationships between the bilingual experience (e.g., how often each language is used, how "strong" each language is) and treatment response of bilinguals with PPA. Specifically, the investigators will evaluate the benefits of tailored speech-language intervention administered in both languages to bilingual individuals with PPA (60 individuals will be recruited). The investigators will conduct an assessment before treatment, after treatment and at two follow-ups (6 and 12-months post-treatment) in both languages. When possible, a structural scan of the brain (magnetic resonance image) will be collected before treatment in order to identify if brain regions implicated in bilingualism are associated with response to treatment. In addition to the intervention described herein, 30 bilingual individuals with PPA will be recruited to complete behavioral cognitive-linguistic testing and will not receive intervention. Results will provide important knowledge about the neural mechanisms of language re-learning and will address how specific characteristics of bilingualism influence cognitive reserve and linguistic resilience in PPA.

The Role of Cerebellum in Speech

This study will investigate the how the cerebellum is involved in speech motor learning over time and short-term corrections in patients with cerebellar ataxia and healthy controls. This will be accomplished through three approaches: behavioral studies, magnetic resonance imaging (MRI), and transcranial magnetic stimulation (TMS). During behavioral studies, participants will be asked to speak into a microphone while their voice is played back over earphones, and to do other speaking tasks. MRI will be acquired to perform a detailed analysis on brain function and anatomy related to speech and the cerebellum. In healthy controls, TMS will also be performed to temporarily disrupt the cerebellum before, during, or after the participant performs speaking tasks. Patients with cerebellar ataxia and healthy volunteers will be asked to complete behavioral studies and/or MRI; healthy volunteers may be asked to additionally participate in TMS.

Dysarthria Management for Minor Groups

This study develops and conduct a small-scale clinical trial study in which the linguistic and cultural diversity of the participants is considered. Speech therapy and counseling services are provided to both patients with Parkinson\'s disease and their caregivers.

Development of Dual Language (Urdu and English) Digital Software for SA, Management Of Adult Dysarthria

The research focuses on the development of a dual-language (Urdu and English) digital software designed for the self-assessment and management of adult dysarthria patients. Dysarthria, a motor speech disorder resulting from neurological injury, significantly affects an individual's ability to communicate effectively.

INcorporating VoIce AcTivated Communication Aids Into Everyday Communication

Dysarthria is a speech disorder resulting in speech that is slow, slurred and difficult to understand, limiting a person's opportunities to study, work, and develop relationships. People with dysarthria often use communication aids to help them to communicate creating spoken messages using a keyboard, touchscreen or joystick. Communication aids can increase independence but are often too slow to keep pace with normal conversation. Developments in speech recognition technology have led to apps which can learn to recognise a set of words or sounds spoken by the individual with dysarthria, and connect these with a clear spoken output. The investigator's previous research provides some evidence that these voice input communication apps may be faster than traditional communication aids. This study aims to find out who can benefit from this technology, and what support they will need to use it successfully. This information can be used by professionals involved in providing communication aids, and will help the investigators to plan further research into their effectiveness. This research has two phases: 1. 20-30 individuals with dysarthria will be asked to use a voice input communication app for 6 months. The investigator's will collect information on whether VocaTempo improves their communication, and helps participants to reach their goals. 2. Focus groups will be held with professionals involved in providing and supporting people with communication aids, to understand factors affecting their ability to provide the support identified as needed in part 1 of the research. The investigators have a panel of communication aid users, who are advising and contributing throughout the study, for example, helping the investigators to identify informal support networks to recruit participants from. The investigators will let people know about the findings through support groups used by people with dysarthria, publications read by people involved in providing communication aids, and academic papers and conferences.

Speech and Arm Combined Exergame

The purpose of this study is to develop innovative home therapy games to train the weak arm and improve speech intelligibility (clarity) of children with hemiplegia from cerebral palsy. The investigators are exploring the effects of these therapy games and how they change the children's speech, hand movement, and brain activation. 15 children who are 8-17 years old will be recruited for this study. These children should have a diagnosis of cerebral palsy, mild to moderate speech issues but use speech as the primary mode of communication, mild to moderate movement difficulty and muscle spasticity, adequate hearing (pass a hearing screening), and be able to follow simple task-related directions. Children who have severe vision impairment that limits the child's ability to interact with the entire computer screen, have severe arm weakness so they cannot move their arm enough to interact with the computer games, have severe increase in tone in their weak arm, or have difficulty following instructions or paying attention to computer video games for at least 10 minutes cannot participate in this study. The therapy games will take 8 weeks to finish at home. Each child will play these games for 30 minutes each day, 5 days per week. In addition, children will come to the lab 4 times for speech and hand movement assessment: (1) 1st assessment takes place immediately before the child start to play the video games. (2) 2nd assessment takes place 4 weeks (midpoint) after the child starts to play the games. (3) 3rd assessment takes place immediately after the video games are finished. (4) 4th assessment takes place 6 weeks after the video games are finished. Each assessment should take about 2 hours to complete in the Rutgers movement lab or at Rutgers SLP Clinic. A total of 15 children will take part in this research study. The research will last for 2 years overall.

Changes in Neuroplasticity Following Intensive Rehabilitation of Aphasia and/or Apraxia of Speech

The present study aims to investigate the short- and long-term effects of two weeks of intensive speech-language pathology intervention with additional physiotherapy, on aphasia and apraxia of speech (AOS) and their neural correlates in thirty persons with chronic stroke. Changes are studied following intensive treatment of aphasia and AOS with standardised speech-language testing and testing of communication and with voxel-based morphometry (VBM) analysis and resting state functional connectivity (rsFC).