Spotlight image
1 2 3 4 5 6 7 8 9 10 11 12 13 14 Hide

Welcome, First Years!

by Melissa Troyer

Welcome to the incoming first-year class of 2014, introduced here. (more)

Creel, S. C. (2014). Tipping the scales: Auditory cue weighting changes over development. Journal of Experimental Psychology: Human Perception and Performance, 40(3), 1146–1160. doi:10.1037/a0036057
How does auditory processing change over development? This study assessed preschoolers’ and adults’ sensitivity to pitch contour, pitch height, and timbre in an association-memory paradigm, with both explicit (overt recognition) and implicit measures (visual fixations to melody-linked objects). In the first 2 experiments, child and adult participants associated each of 2 melodies with a cartoon picture, and recognition was tested. Experiment 1 pitted pitch contour cues against pitch height cues, and Experiment 2 pitted contour cues against timbre cues. Although adults were sensitive to multiple cues, children responded predominantly based on pitch height and timbre, with little sensitivity to pitch contour. In Experiment 3, however, children detected changes to all 3 cues well above chance levels. Results overall suggest that contour differences, although readily perceptible, are less memorable to children than to adults. Gradual perceptual learning over development may increase the memorability of pitch contour.
Wang B., Mezlini A. M., Demir F., Fiume M., Tu Z., Brudno M., Haibe-Kains B., Goldenberg A. (2014). Similarity Network Fusion for Aggregating Data Types on a Genomic Scale. Nature Methods, Jan. 26.
recent technologies have made it cost-effective to collect diverse types of genome-wide data. computational methods are needed to combine these data to create a comprehensive view of a given disease or a biological process. similarity network fusion (snF) solves this problem by constructing networks of samples (e.g., patients) for each available data type and then efficiently fusing these into one network that represents the full spectrum of underlying data. For example, to create a comprehensive view of a disease given a cohort of patients, snF computes and fuses patient similarity networks obtained from each of their data types separately, taking advantage of the complementarity in the data. We used snF to combine mrnA expression, dnA methylation and micrornA (mirnA) expression data for five cancer data sets. snF substantially outperforms single data type analysis and established integrative approaches when identifying cancer subtypes and is effective for predicting survival.
Creel, S. C. (2014). Preschoolers’ flexible use of talker information during word learning. Journal of Memory and Language, 73, 81–98.
abstract Previous research suggests that preschool-aged children use novel information about talkers’ preferences (e.g. favorite colors) to guide on-line language processing. But can children encode information about talkers while simultaneously learning new words, and if so, how is talker information encoded? In five experiments, children learned pairs of early-overlapping words (geeb, geege); a particular talker spoke each word. Across experiments, children learned labels for novel referents, showing an advantage for original-voice repetitions of words which appeared to stem mainly from semantic person-referent mappings (who liked what referent). Specifically, children looked to voice-matched referents when a talker asked for their own favorite (‘‘I want to see the geege’’) or when the liker was unspecified (‘‘Point to the geege’’), but they looked to voice-mismatched referents when a talker asked on behalf of the other talker (‘‘Conor wants to see the geege’’). Initial looks to voice-matched referents were flexibly corrected when later information became available (Anna saying ‘‘Find the geege for Conor’’). Voice-matching looks vanished when talkers labeled the other talker’s favorite referent during learning, possibly because children had learned two conflicting person-referent mappings: Anna-likes-geeb vs. Anna-talks-about-geege. Results imply that children’s language input may be conditioned on talker context quite early in language learning.
Bregman, M. R., & Creel, S. C. (2014). Gradient language dominance affects talker learning. Cognition, 130(1), 85–95. doi:10.1016/j.cognition.2013.09.010
Traditional conceptions of spoken language assume that speech recognition and talker identification are computed separately. Neuropsychological and neuroimaging studies imply some separation between the two faculties, but recent perceptual studies suggest better talker recognition in familiar languages than unfamiliar languages. A familiar-language benefit in talker recognition potentially implies strong ties between the two domains. However, little is known about the nature of this language familiarity effect. The current study investigated the relationship between speech and talker processing by assessing bilingual and monolingual listeners’ ability to learn voices as a function of language familiarity and age of acquisition. Two effects emerged. First, bilinguals learned to recognize talkers in their first language (Korean) more rapidly than they learned to recognize talkers in their second language (English), while English-speaking participants showed the opposite pattern (learning English talkers faster than Korean talkers). Second, bilinguals’ learning rate for talkers in their second language (English) correlated with age of English acquisition. Taken together, these results suggest that language background materially affects talker encoding, implying a tight relationship between speech and talker representations.

Research Opportunities (199s)
  • Cognitive Processes
    “Raednig thees wrods semes to be esaeir tahn you mgiht hvae tohuhgt; waht colud epxlian tihs?” Could you read the sentence above? Having any trouble understanding or recognizing these words? How possible it could be to understand such a sentence, with/without recognize words? What could you explain your effortless ability ...
    (click for details)
  • Space, Time, and Gesture
    While it is clear that people around the world talk and think about time in terms of spatial concepts, many questions remain regarding the link between spatial and temporal concepts. The Embodied Cognition lab is interested in understanding cognition from the perspective of the embodied mind, investigating how the peculiarities ...
    (click for details)
  • Language Development and Remediation in Children
    We are evaluating two interventions for dyslexia that involve training the temporal dynamics of the visual system (magnocellular pathway) and the auditory system, and whether the two interventions together have super-additive effects. As a Research Assistant, you would be traveling to one or two of five participating local elementary schools ...
    (click for details)
  • Body Movements: Dots, Humans, Robots
    The perception and comprehension of others’ actions and body movements is ubiquitous and important. Our lab carries out a range of behavioral, neuroimaging, and neuropsychological experiments on how people perceive others' body movements. In many experiments, we use body movements depicted by point-lights (like this: We are also exploring ...
    (click for details)
  • Tools, Virtual Reality and Your Body
    In everyday life there is a boundary between our bodies and the external environment. Is this perceived boundary fixed or can it be altered? What happens to your body perception when you use a tool? What about when you immersed in virtual reality? The Cognitive Neuroscience and Neuropsychology Lab ( ...
    (click for details)

Recent News & Links (see all)

UCSD Professor Uses Zombies To Teach About Neuroscience

KPBS article: There's no escaping zombies. They've infected every corner of pop culture and more recently have been shambling into academia. Professor Bradley Voytek combines the living dead and neuroscience in the new book, "Do Zombies Dream of Undead Sheep?"

Founding Chair of Cognitive Science returns to UCSD

Don Norman, an engineer and psychologist famous for pushing companies to develop products that are easy to use, is setting up a design lab at UC San Diego, a campus he left decades ago to help shape the future of Apple Computer.

Coursera and UC San Diego Partner to Offer New Interaction Design Specialization

Learners in massive open online courses offered by Coursera can now enroll in 18 new Specializations – a targeted sequence of courses designed to build high-demand skills and subject matter expertise. One of the specializations  “Interaction Design”  is being led by University of California, San Diego Professor Scott Klemmer.

Brad Voytek and brainSCANr

BrainSCANr is designed to help neuroscientists choose research projects, a device by Bradley Voytek of the University of California, San Diego, and his wife Jessica.

UCSD Conference for Research in the Arts, Social Sciences, & Humanities (CRASSH)

Are you an undergraduate interested in the Arts, Social Sciences, or Humanities?  Then consider presenting your research at the UCSD Undergraduate Conference for Research in the Social Sciences, Arts, and Humanities (CRASSH) to be held on November 4 from 10am to 2pm at the UCSD Price Center.

Department Events (see all)

Patricia Churchland (CogSci Colloquium)

The Brains Behind Morality

Self-preservation is embodied in our brain’s circuitry: we seek food when hungry, warmth when cold, and mates when lusty. In the evolution of the mammalian brain, circuitry for regulating one’s own survival and well-being was modified. For sociality, the important result was that the ambit of me extends to include others -- me-and-mine. Offspring, mates, and kin came to be embraced in the sphere of me-ness; we nurture them, fight off threats to them, keep ...
(click for details)

Mon, Oct 27th, 12:00pm-1:00pm (CSB 003)
(4 days, 3 hours from now)

CRL talk

Tue, Oct 28th, 4:00pm-5:00pm (CSB 280)
(5 days, 7 hours from now)

Faculty Meeting

Wed, Oct 29th, 12:00pm-2:00pm (CSB 180)
(6 days, 3 hours from now)

Tanya Luhrmann (CogSci Colloquium)

Invisible others: How metacognitive practices make the unseen real

For a while now my work has settled on the way that people monitor and attend to their cognitive and affective experiences. The first part of my talk will describe my ethnographic
work with evangelical Christians who seek a personal, intimate relationship with God—one
in which God will talk back. My work suggests that these Christians use prayer practice to
monitor their mental experience and that they selectively ...
(click for details)

Mon, Nov 3rd, 12:00pm-1:00pm (CSB 003)
(1 week, 4 days from now)

CRL talk

Tue, Nov 4th, 4:00pm-5:00pm (CSB 280)
(1 week, 5 days from now)

Campus-wide Events (see all)

Careers in Scientific Publishing Seminar

Careers in Scientific Publishing

It is now clear that the number of new PhDs vastly surpasses the availability of tenure-track faculty positions. Luckily, there are various alternatives for newly minted scientists looking for careers outside academia. For example, many journals employ professional editors to handle the evaluation and peer review of manuscripts. This talk will give you an overview of the ins and outs of scientific publishing.

Alexander Arguello, PhD
Associate Editor, Nature Neuroscience
(click for details)

Thu, Oct 23rd, 4:00pm-5:00pm (CNCB Marilyn Farquhar Seminar Room (formerly Large Conference Room))
(7 hours, 12 minutes from now)

Michael C. Crair (Neurobiology talk)

Activity Dependent Neural Circuit Development Prior to Sensory Experience

In the brains of mammals, birds, and invertebrates, the sensory world is organized into regular neuronal arrays, or maps. Common examples are the map of body surface in the somatosensory cortex (the so called "homunculus") and the representation of oriented bars, or edges, in the visual cortex. Dr. Crair is interested in understanding how genes ('nature') and the environment ('nurture') interact to guide the development of neuronal maps. His ...
(click for details)

Mon, Oct 27th, 12:00pm-1:00pm (Marilyn G. Farquhar Seminar Room, CNCB)
(4 days, 3 hours from now)