Features

Features and Capabilities of Presentation

Multi-tasking

• Display of simultaneous audio and/or visual stimuli: e.g., multiple sounds, sounds with graphics and/or video, graphics with video
• Monitoring responses and I/O ports, with high accuracy even during high-rate multimodal stimuli

Visual Stimuli

• Display of stored images in most formats (Picture Stimuli)
• Use of any adapter display mode from 32 bit color to palettized display modes
• Synchronization of stimulus appearance with monitor vertical scan (Picture Timing Control)
• Display of a new stimulus up to every vertical scan
• Display of stored videos (Video Stimuli)
• Animation
• 3D stimuli, from primitive objects to imported models, with lighting and camera control

Auditory Stimuli

• Resolution: 8, 16 or 24 bit, with 1-8 channels of sound
• Use of stored sounds: Windows .wav format
• Independent volume control on each channel
• Simultaneous presentation of multiple sounds
• Sub-millisecond delay to stimulus onset for some sound cards

Input Devices

• Button press input from mouse, keyboard, joystick, port devices, and DirectX-compatible devices (Button Devices)
• Coordinate input from mouse and joystick (Axis Devices)

Port Output

• Interface to external devices and acquisition systems
• Use of standard serial, standard parallel, National Instruments, and Measurement Computing devices
• Codes or pulses time-locked to event detection
• Use of multiple ports simultaneously

Port Input

• Monitoring ports for input
• Use of standard serial, standard parallel, National Instruments, and Measurement Computing device
• Use of multiple ports simultaneously

fMRI (external device) synchronization

• Reception of pulses from external devices through any available port device (fMRI Mode Interfacing)
• Start of stimulus sequences on specific pulse/scan (fMRI Mode)
• Interrupt enabled when using the parallel port
• Emulation mode for testing of fMRI experiments

Eye-tracker interfacing

• Generalized common interface for communication with eye trackers (Eye Trackers)
• Implementations available for many popular eye trackers
• Access gaze position, blink, fixation, pupil, and saccade data
• Present eye dependent stimuli

Programmability

• Built-in programming language for custom control (PCL)
• Control of stimulus presentation in real-time
• Adjustment of stimuli based on responses or external inputs in real-time
• Implementation of adaptive procedures

Timing

• Reporting of times for any event of interest (Logfiles)
• Verification of all timing to detect operating system problems (Uncertainties)

• Use of DirectX to obtain the best possible performance from standard hardware

External software interfacing

• General purpose plug-in interface (Using Workspace Objects)
• Interface to Matlab (Matlab Workspace Extension)
• Eye tracker plug-in interface (Eye Trackers)
• Run experiments using your own front end (Presentation control API)

Benchmark Testing

• Evaluation of operating system timing behavior
• Testing of individual computers with individual experiments (Benchmark Feature)

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