Digital Commons Network^™

Perceiving Oldness In Parietal Cortex: Fmri Characterization Of A Parietal Memory Network, Adrian Gilmore

Arts & Sciences Electronic Theses and Dissertations

The manner in which the human brain recognizes certain stimuli as novel or familiar is a matter of ongoing investigation. The overarching goal of this dissertation is to improve our understanding of how this may be accomplished. More specifically, work contained herein focuses on a recently described "parietal memory network" (PMN; Gilmore et al., 2015) that shows opposite patterns of activity when perceiving novel or familiar stimuli: deactivating in response to novelty, and activating in response to familiarity. Critically, our understanding of this network is based on explicit memory tasks, in which subjects are deliberately instructed to learn or remember …

Recognition Training For Faces Across Age Gaps, William Blake Erickson

Graduate Theses and Dissertations

Face recognition is a problem that has theoretical and applied value. However, the fact of facial aging is rarely addressed in research and unmentioned in the major theories of face recognition. Facial aging also has ramifications for missing persons and fugitive cases, confounding attempts by law enforcement to recover these people whose last known images are years or decades out of date. This dissertation reports three studies aimed at measuring baseline age-gap recognition ability and testing various training regimens designed to increase accuracy rates for this unique kind of recognition task.

Does Sleep Enhance The Consolidation Of Implicitly Learned Visuo-Motor Sequence Learning?, Jeremy Viczko

Electronic Thesis and Dissertation Repository

Sleep has been shown to facilitate the consolidation (i.e., enhancement) of simple explicit (i.e., conscious) motor sequence learning (MSL). It remains unclear the degree to which this applies to implicit (i.e., unconscious) MSL. Employing reaction time and response generation tasks, we investigated the extent to which sleep is involved in consolidating implicit MSL, specifically whether the motor or the spatial cognitive representations of a learned sequence are enhanced by sleep, and whether these changes support the development of explicit sequence knowledge across sleep but not wake. Our results indicate that spatial and motor representations can be behaviourally dissociated for implicit …

Dancing In The Dark: Sleep-Dependent Motor Skill Memory Consolidation And Periodic Limb Movement Disorder, Valya Sergeeva

Electronic Thesis and Dissertation Repository

Periodic Limb Movement Disorder (PLMD) is a neurodegenerative disease characterized by dysfunction of the striatum and brief, repetitive limb movements during sleep. PLMD can severely disrupt non-rapid eye movement (NREM) sleep. Motor skills learning and memory consolidation are dependent on striatal activation, the latter enhanced by NREM sleep. Therefore, we investigated whether individuals with PLMD had learning and sleep-related memory deficits, and whether this putative deficit was related to sleep quality or symptom severity. 14 adults with a PLM index >15/hr underwent two nights (baseline, training) of polysomnographic recording. 15 age-matched healthy controls underwent three nights (baseline, undisturbed training and …

A Novel Use Of The Deese-Roediger-Mcdermott Paradigm: Distinguishing Between Differential Memory Mechanisms In Emotional Literature, Alan John Yablonski Jr.

Senior Honors Projects, 2010-2019

To current knowledge, the emotional literature has not included the proposal to conceptualize experimental designs in terms of item vs. hippocampal-dependent relational memory representations. Through utilizing the Deese-Roediger-McDermott (DRM) paradigm the current study targets two memory mechanisms: item-specific memory (i.e., font color) and relational memory. In addition, relational-binding memory was also assessed. The current study consists of three hypotheses: (a) negatively-valenced critical lures will be correctly recalled by participants more than neutrally-valenced critical lures (increased relational memory for negatively-valenced words), (b) participants will more accurately recall studied negatively-valenced words with the correct color compared to neutrally-valenced studied words (increased item-specific …

Cognitive Processes And Memory Differences In Recall And Recognition In Adults, Laura Elaine Fitzgerald

Walden Dissertations and Doctoral Studies

Eyewitness testimony is critical in both criminal court and civil court, so determining the most reliable method to gain information from witnesses is imperative. Past research in this area has focused on false memory, assisted recall, stress, and event perception. A gap exists in the current literature regarding the best method to gain the most accuracy in recall. The purpose of this study was to evaluate free recall, cued recall, and recognition, in an attempt to examine the accuracy of eyewitness memory. The study utilized a quantitative design to assess the accuracy of eyewitness memory as measured by results on …

Individual Differences In Eyewitness Testimony, Noel A. Cal

Honors Undergraduate Theses

Eyewitness testimony plays a crucial role in the justice system. Misidentification from eyewitnesses was reported in 70% of 300 DNA exonerations of wrongfully convicted individuals (Wixted et al., 2015). Similarly, many convicts can also be set free because of juror’s faulty eyewitness recall during examination. Previous research indicated that females are more reliable in recall than men. However, these findings were not extensively examined with regards to time delay prior to the trial. Thus, it is important to systematically examine the various factors that influence eyewitness testimony.

The present study was designed to empirically examine the effects of gender, interview …

Practical Implications Of Learning From Unsuccessful Retrieval Attempts, Ann C. Rossmiller, James R. Houston

Williams Honors College, Honors Research Projects

Recent findings suggest that retesting oneself facilitates better learning than studying alone. Building off previous experiments where correcting participants has significantly increased correctness, the current study furthers our understanding about learning from unsuccessful retrieval attempts by manipulating the frequency of correction. Using a set of 42 associated word pairings, each participant was exposed to two blocks where they would memorize the word pairs. This was followed by two quizzing blocks and a final exam block where participants were asked to write down the associate to the stimulus presented on screen. Frequency of correction was manipulated during the quizzing blocks where …

Emotional Factors Affecting Face-Name Memory : The Role Of Valence And Arousal During Encoding, Stephanie Ann Kazanas

Legacy Theses & Dissertations (2009 - 2024)

The emotion literature has maintained that emotional stimuli are prioritized over neutral stimuli: Emotional words and images are detected faster, processed more automatically, and remembered better. However, the benefit from processing emotional stimuli can also be affected by valence, wherein some emotion advantages are driven by positive emotion and others by negative emotion. This is particularly evident in the face memory literature, in which researchers have investigated the role of expressed emotion in learning new faces. For example, some have found that happy faces are more memorable than angry and neutral faces. However, when comparing memory for happy faces with …

Comparative Memory/Behavioral Symptoms Of Alzheimer's Disease: Eoad Vs. Load, Marcia Gale Roberson

Walden Dissertations and Doctoral Studies

Alzheimer's disease (AD) is a fatal disorder with no apparent cure. Early-onset AD (EOAD) occurs in individuals before the age of 65, and late-onset AD (LOAD) occurs in individuals age 65 and older. Past studies have proven that AD is fatal among Americans age 65 and older. The disease is characterized by impairments in memory and executive function as well as other cognitive and behavioral problems. The research questions addressed by this sequential, mixed-method study compared EOAD and LOAD by exploring common behavioral/cognitive symptoms and stage levels of AD. Research participants were recruited from the Alzheimer's Association who were members …

The Effects Of Affective Arousal On Color Perception And Memory, Nicole Elizabeth Lang

Senior Projects Spring 2016

The link between affective arousal, color perception, and color memory was explored by inducing fear, sadness, or embarrassment in 158 participants who them completed a color perception and memory task. It was predicted that participants experiencing fear or embarrassment would more often correctly identify and remember red and green than a neutral condition whereas experiencing sadness would lead to less correct identification and memory for blue and yellow than neutral. There was only a marginally significant effect of fear on color memory for red. In the low arousal condition, there was an effect of fear on color memory for green …

The Influence Of Emotion On Memory For A Crime, Taylor Langley

Electronic Theses and Dissertations

Researchers have reported errors in recall or recognition of witnessed events, accounting for the most common cause of false convictions of innocent people. Tiwari (2010) indicated that 25% of suspects who were identified in a line-up were actually innocent. Jurors are strongly influenced by eyewitness testimony and this can lead to false convictions. The validity of eyewitness identification is critical in cases in which it is used as evidence. In the current study we examined specific emotion states by inducing fear, surprise, and neutral moods. We hypothesized that participants in the Fear group would be least susceptible to the effects …