Temporal resolution - Study guides, Class notes & Summaries

Summary of Task 5 of Methods of Cognitive Neuroscience

CNS USA Exam 3 Questions & Answers 2024/2025 What are the 3 layers of the human eye? - ANSWERSSclera, Choroid, and Retina From the inside out, how does the structures of the eye lie? - ANSWERSOuter sclera, transparent cornea Anterior chamber (Aqueous humor) Iris Pupil Lens Posterior chamber (Vitreous humor) Retina What type of photoreceptors does the retina contain? - ANSWERSRods and Cones Which photoreceptors function is vision in low lighting? - ANSWERSRods Which photore...

What characterises Electro-magnetic radiation 1. Wavelength 2. amplitude - height of wave from centreline to peak 3. Polarization - orientation vector of photons 4. frequency - number of wave cycles Why can people get sunburnt whilst sitting in the shade 1. Reflected UV radiation 2. Scattered UV radiation - from atmosphere and clouds What is a high pass filter? - Image enhancement technique which enhaces the edges and finer details of an image - This is done by subtracting a lo...

Which of the following adjustments will improve temporal resolution on color Doppler? A. steer the sample box B. increase the wall filter C. decrease sample size D. increase color gain - ️️C. decrease the sample size While using the same type of ultrasound system, a 5MHz continuous wave and 5MHz pulsed wave transducer are used at the same time to evaluate blood flow in the same artery. Which transducer will produce a display of the spectral tracing first? A. continuous wave B. pulse...

Primacy effect correct answers tendency to remember words at the beginning of a list especially well recall accuracy correct answers Memory recall decreases after a longer interval. (Behavioral Research method) recency effect correct answers tendency to remember words at the end of a list especially well Recognition accuracy correct answers E.g. face recognition. Used a distractor. (Behavioral Research Method) Priming correct answers Occurs when processing of a stimulus is facili...

C What is dynamic aperture? A.aperture that varies with transmit frequency B.aperture that decreases as a function of time C.aperture that increases with increasing focal length D.aperture that changes as a function of frame rate A to which acoustic variable is penetration depth inversely related? A.frequency B.wavelength C.period D.propagation speed B which imaging mode requires a broadband transducer? A.continuous wave doppler B.Pulsed wave doppler C.color flow imaging D.harmo...

A single unit is defined as a single, firing neuron whose spike potentials are distinctly isolated by a recording microelectrode. The ability to record signals from neurons is centered around the electric current flow through the neuron. - Answer-single unit recording? Are lesion techniques primarily anatomical or functional? - Answer-We can't use temporal resolution because weoften times do not have a before or after Be able to identify typical data presentations of the techniques listed ...

C - Answer- What is dynamic aperture? A.aperture that varies with transmit frequency B.aperture that decreases as a function of time C.aperture that increases with increasing focal length D.aperture that changes as a function of frame rate A - Answer- to which acoustic variable is penetration depth inversely related? A.frequency B.wavelength C.period D.propagation speed B - Answer- which imaging mode requires a broadband transducer? A.continuous wave doppler B.Pulsed wave dopple...

Which is NOT a synonym for the preliminary/localizer image taken at the start of a CT examination? A. Topogram B. Scout C. Scanogram D. Spiral - correct answers D. Spiral The ability of a system to differentiate, on the image, objects with similar densities is known as: A. High contrast resolution B. Low contrast resolution C. Spatial resolution D. Temporal resolution - correct answers B. Low contrast resolution Each two dimensional square of data that make up the CT image is calle...

Reducing the likelihood of bioeffects from acoustic energy is the mission of the: A. Nyquist limit B. Reynolds number C. Huygens principle D. ALARA principle E. Poiseuille principle -answer- D. ALARA principle The number of cycles in a pulse directly related to the: A. Duty factor B. SPL C. operating frequency D. PRF E. propagation speed of the medium -answer- B. SPL The Doppler shift frequency is proportional to the: A. Cosine values B. Doppler angle C. Operat...