Browse All Terms

33 terms
All A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
safety
السلامة

Assurance that the BCI systems and its associated procedures will not cause harm to or adverse effects on the user

Applications
Safety Standards
معايير السلامة

Formal procedures aimed at protecting user safety.

Ethical Governance
sampling rate, sampling frequency
معدل الاعتيان/تردد الاعتيان

The number of samples of a signal taken per unit time, typically measured in Hertz

Experimental designs and setups
Semi-Supervised Learning
التعلّم شبه المُوجَّه

Combining small amounts of labeled data with large amounts of unlabeled data to improve a model's generalization capabilities.

AI and Machine Learning
sensor
المجس / المستشعر

A specific type of transducer that detects or measures a physical quantity and converts it into an electrical signal.

System components
sensorimotor rhythm (SMR)
الإيقاع الحسي الحركي

n oscillation in electric or magnetic fields recorded over the sensorimotor cortex in specific frequency bands (typically 12-15 Hz).

Protocols and paradigms
Signal Acquisition
اكتساب الإشارة

The first stage of the BCI pipeline, which involves measuring the brain's raw physiological signals using a specific sensor modality.[3, 45] This process includes amplifying the very weak neural signals to a usable level, converting them from analog to digital form, and transmitting them to a computer for processing.[25]

Signal processing and analysis
signal processing
معالجة الإشارات

The transformation, extraction, and classification of brain signals to interpret the user's intent and control an external device.

Signal processing and analysis
Signal-to-Noise Ratio (SNR)
نسبة الإشارة إلى الضوضاء

A measure quantifying the strength of the neural signal relative to background noise.

Experimental designs and setups
Single Photon Emission Computed Tomography (SPECT)
التصوير المقطعي المحوسب بانبعاث الفوتون المفرد

Nuclear imaging method detecting gamma rays to provide 3D functional information of brain blood flow and activity.

Modalities
Single-Session Study
دراسة بجلسة واحدة

Experimental design where all data is acquired from a subject within a single session.

Experimental designs and setups
Single-Unit Recording (SUR)
تسجيل الخلية العصبية المفردة

Signal acquisition from individual neurons via microelectrodes.

Modalities
somatosensory evoked potential (SEP)
الجهد المُثار الحسي الجسدي

An evoked potential in response to a tactile or proprioceptive stimulus.

Protocols and paradigms
Source Localization
تحديد موقع المصدر العصبي

Reconstruction of neural signal origins using inverse modeling techniques.

Signal processing and analysis
spatial domain analysis
تحليل المجال المكاني

Computing the physical layout or spatial distribution of brain activity as measured by sensors

Signal processing and analysis
Spatial Features
السمات المكانية

Features that reflect the distribution or pattern of neural activity across multiple electrodes or brain regions.

Experimental designs and setups
Spatial Filtering
الترشيح المكاني

Technique to enhance or isolate neural signals from specific brain regions, such as Laplacian or CSP filters.

Signal processing and analysis
Spectral Coherence
الاتساق الترددي (أو التوافق الطيفي)

EEG feature evaluating the functional connectivity between two brain regions by measuring frequency synchronization.

Experimental designs and setups
speech brain-computer interface
الترابط الدماغي الحاسوبي للكلام

A BCI system that captures and decodes neural signals related to user thoughts intended to be articulated but which cannot be vocalized, translating them into text or synthetic speech.

Basic concepts and types
spike count rate
معدل تعداد النبضات

A measure of the average firing rate of a neuron in a specific time interval

Signal processing and analysis