Recent from talks
Serial reaction time
Knowledge base stats:
Talk channels stats:
Members stats:
Serial reaction time
Serial reaction time (SRT) is a commonly used parameter in the measurement of unconscious learning processes. This parameter is operationalised through a SRT task, in which participants are asked to repeatedly respond to a fixed set of stimuli in which each cue signals that a particular response (i.e., button press) needs to be made. Unbeknownst to the participant, there are probabilities governing the occurrence of the cues as they appear in both a repeated sequence and randomised order, thus required responses following one cue have some predictability, influencing reaction-time. As a result, reaction-time to these cues becomes increasingly fast as subjects learn and utilise these transition probabilities.
Combined with artificial grammar learning methods, this paradigm has been used to study a range of learning phenomena including language structure learning, memory, and syntactic priming.
The conceptualisation of SRT began with researchers Nissen and Bullemer in 1987, who believed a performance based parameter was necessary in the investigation of attentional requirements of learning and memory. The experimental procedure of early studies that investigated attention, awareness and memory (therefore learning) (including Moray's Attention in Dichotic Listening (1959) and Norman's Memory while Shadowing (1969) amongst others) often involved the presentation of a set of stimuli through some form (e.g, verbal repetition in one ear) while the participant would simultaneously engage in another task that was assumed to require additional attention. This would result in them "unattending" to the presented stimuli (often a set of words), to which experiment results mostly demonstrated that recall of the "unattended" stimuli was poor
After thorough analysis of literature (including Moray (1959) and Norman (1969)), Nissen and Bullemer found that the procedures used in measuring recall of the "unattended" stimuli in such studies were highly reliant on traditional introspective measures, such as recall or recognition tests. Developing research at the time however highlighted that memory for an existing or preceding experience can also be reflected in the subsequent performance of a task, not requiring deliberate manipulation of consciousness. Alongside this, memory for implicit cognitive skills like perceptual and motor learning was investigated through more performance-based parameters. In combination, this led to the direction of their research on investigating whether a performance-based measure like the SRT Task would reflect reduced dependency on the allocation of attention on a stimulus over more traditional introspective measures.
While there have been various adaptations of the SRT task in correspondence to different areas of Psychological research, at its most basic form the task involves a motor-based interaction with a computer in which participants must respond to a change in a visual stimuli appearing on-screen.
Source:
In a horizontal arrangement, a visual cue may appear in one of four locations on-screen. Each location on the screen is coded to correspond to a button on a response-pad, with buttons typically represented by keys on a keyboard in modern settings. When the visual cue appears on screen, participants must press the corresponding key (e.g, location 1 corresponds to the numerical key "1" on a keyboard) as fast as possible in response to the cue. Each time that this is done defines the end of a trial, therefore the duration of a trial is determined by the participant's reaction-time in pressing the corresponding key. This is the primary measurement of the task. After each trial, there is a short delay of between 200-500 milliseconds before the next cue is shown, thus starting the next trial round.
The pattern in which the cues are shown each trial is predetermined and intentional, with a specific sequential chain being repeated (for instance, 2-3-1-4-3-2-4-1-3-4-2-1) followed by a few random trials in a non-repeating order. The repeating chain of cues is typically repeated as a set of 10.
Hub AI
Serial reaction time AI simulator
(@Serial reaction time_simulator)
Serial reaction time
Serial reaction time (SRT) is a commonly used parameter in the measurement of unconscious learning processes. This parameter is operationalised through a SRT task, in which participants are asked to repeatedly respond to a fixed set of stimuli in which each cue signals that a particular response (i.e., button press) needs to be made. Unbeknownst to the participant, there are probabilities governing the occurrence of the cues as they appear in both a repeated sequence and randomised order, thus required responses following one cue have some predictability, influencing reaction-time. As a result, reaction-time to these cues becomes increasingly fast as subjects learn and utilise these transition probabilities.
Combined with artificial grammar learning methods, this paradigm has been used to study a range of learning phenomena including language structure learning, memory, and syntactic priming.
The conceptualisation of SRT began with researchers Nissen and Bullemer in 1987, who believed a performance based parameter was necessary in the investigation of attentional requirements of learning and memory. The experimental procedure of early studies that investigated attention, awareness and memory (therefore learning) (including Moray's Attention in Dichotic Listening (1959) and Norman's Memory while Shadowing (1969) amongst others) often involved the presentation of a set of stimuli through some form (e.g, verbal repetition in one ear) while the participant would simultaneously engage in another task that was assumed to require additional attention. This would result in them "unattending" to the presented stimuli (often a set of words), to which experiment results mostly demonstrated that recall of the "unattended" stimuli was poor
After thorough analysis of literature (including Moray (1959) and Norman (1969)), Nissen and Bullemer found that the procedures used in measuring recall of the "unattended" stimuli in such studies were highly reliant on traditional introspective measures, such as recall or recognition tests. Developing research at the time however highlighted that memory for an existing or preceding experience can also be reflected in the subsequent performance of a task, not requiring deliberate manipulation of consciousness. Alongside this, memory for implicit cognitive skills like perceptual and motor learning was investigated through more performance-based parameters. In combination, this led to the direction of their research on investigating whether a performance-based measure like the SRT Task would reflect reduced dependency on the allocation of attention on a stimulus over more traditional introspective measures.
While there have been various adaptations of the SRT task in correspondence to different areas of Psychological research, at its most basic form the task involves a motor-based interaction with a computer in which participants must respond to a change in a visual stimuli appearing on-screen.
Source:
In a horizontal arrangement, a visual cue may appear in one of four locations on-screen. Each location on the screen is coded to correspond to a button on a response-pad, with buttons typically represented by keys on a keyboard in modern settings. When the visual cue appears on screen, participants must press the corresponding key (e.g, location 1 corresponds to the numerical key "1" on a keyboard) as fast as possible in response to the cue. Each time that this is done defines the end of a trial, therefore the duration of a trial is determined by the participant's reaction-time in pressing the corresponding key. This is the primary measurement of the task. After each trial, there is a short delay of between 200-500 milliseconds before the next cue is shown, thus starting the next trial round.
The pattern in which the cues are shown each trial is predetermined and intentional, with a specific sequential chain being repeated (for instance, 2-3-1-4-3-2-4-1-3-4-2-1) followed by a few random trials in a non-repeating order. The repeating chain of cues is typically repeated as a set of 10.