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Ezra Smith
University of Arizona
8Publications
5H-index
207Citations
Publications 8
Newest
Published on Jan 1, 2018in Psychophysiology 3.12
Ezra Smith5
Estimated H-index: 5
,
James F. Cavanagh12
Estimated H-index: 12
,
John J. B. Allen54
Estimated H-index: 54
Frontal EEG alpha asymmetry provides a promising index of depression risk, yet very little is known about the neural sources of alpha asymmetry. To identify these sources, this study examined alpha asymmetry using a distributed inverse solution: exact low resolution brain electromagnetic tomography (eLORETA). Findings implicated a generator in lateral midfrontal regions that contributed to both surface asymmetry and depression risk. Participants with any lifetime history of depressive episodes w...
5 Citations Source Cite
Published on Jan 1, 2017in International Journal of Psychophysiology 2.87
Ezra Smith5
Estimated H-index: 5
(University of Arizona),
Samantha J. Reznik3
Estimated H-index: 3
(University of Arizona)
+ 1 AuthorsJohn J. B. Allen54
Estimated H-index: 54
(University of Arizona)
Abstract Frontal electroencephalographic (EEG) alpha asymmetry is widely researched in studies of emotion, motivation, and psychopathology, yet it is a metric that has been quantified and analyzed using diverse procedures, and diversity in procedures muddles cross-study interpretation. The aim of this article is to provide an updated tutorial for EEG alpha asymmetry recording, processing, analysis, and interpretation, with an eye towards improving consistency of results across studies. First, a ...
27 Citations Source Cite
Published on May 1, 2016in Neuropsychologia 2.89
Ezra Smith5
Estimated H-index: 5
(University of Arizona),
Laura Zambrano-Vazquez3
Estimated H-index: 3
(University of Arizona),
John J. B. Allen54
Estimated H-index: 54
(University of Arizona)
Some authors have argued that worry cues lateralization of frontal brain activity leftward, whereas other varieties of avoidance motivation cue lateralization of frontal brain activity rightward. By comparison, more right-than-left parietal activity correlates with anxious arousal. The purpose of the present report was to test two models of brain lateralization and anxiety: one model that proposed that worry correlates with more left-frontal activity and another model that proposed that avoidanc...
12 Citations Source Cite
Published on Jan 1, 2014
Joseph L. Sanguinetti6
Estimated H-index: 6
(University of Arizona),
Ezra Smith5
Estimated H-index: 5
(University of Arizona)
+ 1 AuthorsStuart R. Hameroff36
Estimated H-index: 36
Source Cite
Published on Apr 1, 2013in International Journal of Psychophysiology 2.87
Ezra Smith5
Estimated H-index: 5
(University of Arizona),
Anna Weinberg26
Estimated H-index: 26
(Stony Brook University)
+ 1 AuthorsGreg Hajcak64
Estimated H-index: 64
(Stony Brook University)
Abstract Emotional faces are motivationally salient stimuli that automatically capture attention and rapidly potentiate neural processing. Because of their superior temporal resolution, scalp-recorded event-related potentials (ERPs) are ideal for examining rapid changes in neural activity. Some reports have found larger ERPs for fearful and angry faces compared with both neutral and other emotional faces, and a key aim of the present study was to assess neural response to multiple emotional expr...
47 Citations Source Cite
Published on Feb 1, 2013in Psychophysiology 3.12
Autumn Kujawa19
Estimated H-index: 19
(Stony Brook University),
Ezra Smith5
Estimated H-index: 5
(University of Arizona)
+ 1 AuthorsGreg Hajcak64
Estimated H-index: 64
(Stony Brook University)
The feedback negativity (FN) has been shown to reflect the binary evaluation of possible outcomes in a context-dependent manner, but it is unclear whether context dependence is based on global or local alternatives. A cued gambling task was used to examine whether the FN is sensitive to possible outcomes on a given trial, or the range of outcomes across trials. On 50% of trials, participants could break even or lose money; on remaining trials, participants could win or break even. Breaking even ...
31 Citations Source Cite
Published on Jan 1, 2012in Biological Psychology 2.89
Jennifer N. Bress9
Estimated H-index: 9
(Stony Brook University),
Ezra Smith5
Estimated H-index: 5
(Stony Brook University)
+ 2 AuthorsGreg Hajcak64
Estimated H-index: 64
(Stony Brook University)
Depression is a major public health concern, and the period from late childhood through early adolescence is a critical time in the development of depressive symptoms. In adults, depression and depressive symptoms are associated with a reduction in the feedback negativity (FN), an ERP component elicited by feedback indicating rewards versus losses. The current study sought to extend these findings to a sample of 64 children aged 8 to 13, and to examine developmental differences in the FN. Consis...
85 Citations Source Cite
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