The role of psychophysiology in clinical assessment: ERPs in the evaluation of memory

Allen, John J. B.

doi:10.1017/s0048577201393034

Cited by 29 publications

(4 citation statements)

References 103 publications

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“…Unlike the CQT, this technique has a strong scientific foundation and is based on current understanding of brain processes underlying memory. As such, it is likely to have other applications as well, including assessing memory loss associated with amnesia (Allen, 2002) and dissociative disorders (Allen & Iacono, 2001) as well as verifying the accuracy of eyewitness identification (Lefebvre, Marchand, Smith, & Connolly, 2007). Because this GKT adaptation has multiple potential applications, the likelihood is high that it will undergo further refinement.…”

Section: Looking To the Futurementioning

confidence: 99%

Effective Policing

Iacono

2008

Criminal Justice and Behavior

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Forensic applications of polygraph techniques rely primarily on the control or comparison question test (CQT). The author describes the CQT and its theoretical basis, and how it is used and evaluated by the polygraph professionals, and by scientists at arms length from the polygraph community. Because the CQT (a) has a weak theoretical foundation, making it unlikely that it can be as accurate as polygraph proponents claim, (b) is biased against the innocent, and (c) may be subject to countermeasures used by the guilty to appear truthful, CQT results cannot constitute evidence of either deception or truthfulness. In the absence of insight into brain mechanisms that underlie deception, it may be difficult to develop a valid lie detector. However, methods are available for detecting guilty knowledge, information that only the perpetrator of a crime and the police possess, which are ripe for further development as forensic applications.

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Section: Looking To the Futurementioning

confidence: 99%

Effective Policing

Iacono

2008

Criminal Justice and Behavior

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“…To be precise, P300 is the positive potential generated by the brain in the latency of 300-600 ms after the presentation of stimulus, which reflects the processing of cognitive process [9]. Essentially, P300 can be divided into P3a and P3b, where P3a is an assessment of the initial state of a stimulus, recording the time it takes for the stimulus to appear until the stimulus awakenings, whereas P3b is the time it takes for the signal to attract the attention and memory [10,11]. Despite the relatively large number of studies on the source of P300, the source location is still not consistent.…”

Section: Introductionmentioning

confidence: 99%

Visual Search P300 Source Analysis Based On ERP-fMRI Integration

Zhang

Luo

Jin

et al. 2020

Preprint

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Attention control can be achieved in two ways, stimulus-driven bottom-up attention and goal-driven top-down attention. Different visual search tasks involve different attention control. The pop-out task requires more bottom-up attention, whereas the search task involves more top-down attention. P300 which is the positive potential generated by the brain in the latency of 300-600 ms after the stimulus, reflects the processing of cognitive process and is an important component in visual attention. The P300 source is not consistent in the previous researches, our aim therefore, is to study the source location of P300 component based on visual search attention process. Here we use pop-out and search paradigm to get the ERP data of 13 subjects and the fMRI data of 25 subjects, and analyze the source location of P300 using the ERP-fMRI integration technology with high temporal resolution and high spatial resolution. The target differs from the distractor in color and orientation in the pop-out task, whereas the target and the distractor have different orientation and the same color in the search task. ERP results indicate that pop-out induces larger P300 concentrated in the parietal lobe, whereas search induced P300 is more distributed in the frontal lobe. Further ERP and fMRI integration analyses reveal that the left angular gyrus, right postcentral gyrus of parietal lobe and the left superior frontal gyrus (medial orbital) are the source of P300. Our study suggests the contribution of the frontal and parietal lobes to the P300 component.

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“…More positive amplitude indicates more features of an item were remembered (Bridger et al, 2012). LPCs have been widely observed during episodic memory tasks and are thought to reflect the extent to which a stimulus is recognized (Allen, 2002;Niznikiewicz & O'Donnell, 1997). As with the Dm component, the task approach of the individual affects LPCs.…”

Section: Introductionmentioning

confidence: 99%