1. Different stimuli, different spatial codes: a visual map and an auditory rate code for oculomotor space in the primate superior colliculus.

    PLoS ONE 9(1):e85017 (2014) PMID 24454779 PMCID PMC3893137

    Maps are a mainstay of visual, somatosensory, and motor coding in many species. However, auditory maps of space have not been reported in the primate brain. Instead, recent studies have suggested that sound location may be encoded via broadly responsive neurons whose firing rates vary roughly pr...
  2. Different stimuli, different spatial codes: a visual map and an auditory rate code for oculomotor space in the primate superior colliculus.

    PLoS ONE 9(1):e85017 (2014) PMID 24454779 PMCID PMC3893137

    Maps are a mainstay of visual, somatosensory, and motor coding in many species. However, auditory maps of space have not been reported in the primate brain. Instead, recent studies have suggested that sound location may be encoded via broadly responsive neurons whose firing rates vary roughly pr...
  3. Different stimuli, different spatial codes: a visual map and an auditory rate code for oculomotor space in the primate superior colliculus.

    PLoS ONE 9(1):e85017 (2014) PMID 24454779 PMCID PMC3893137

    Maps are a mainstay of visual, somatosensory, and motor coding in many species. However, auditory maps of space have not been reported in the primate brain. Instead, recent studies have suggested that sound location may be encoded via broadly responsive neurons whose firing rates vary roughly pr...
  4. Looking at the ventriloquist: visual outcome of eye movements calibrates sound localization.

    PLoS ONE 8(8):e72562 (2013) PMID 24009691 PMCID PMC3757015

    A general problem in learning is how the brain determines what lesson to learn (and what lessons not to learn). For example, sound localization is a behavior that is partially learned with the aid of vision. This process requires correctly matching a visual location to that of a sound. This is a...
  5. Looking at the ventriloquist: visual outcome of eye movements calibrates sound localization.

    PLoS ONE 8(8):e72562 (2013) PMID 24009691 PMCID PMC3757015

    A general problem in learning is how the brain determines what lesson to learn (and what lessons not to learn). For example, sound localization is a behavior that is partially learned with the aid of vision. This process requires correctly matching a visual location to that of a sound. This is a...
  6. Auditory signals evolve from hybrid- to eye-centered coordinates in the primate superior colliculus.

    Journal of Neurophysiology 108(1):227 (2012) PMID 22514295 PMCID PMC3434609

    Visual and auditory spatial signals initially arise in different reference frames. It has been postulated that auditory signals are translated from a head-centered to an eye-centered frame of reference compatible with the visual spatial maps, but, to date, only various forms of hybrid reference ...
  7. Auditory signals evolve from hybrid- to eye-centered coordinates in the primate superior colliculus.

    Journal of Neurophysiology 108(1):227 (2012) PMID 22514295 PMCID PMC3434609

    Visual and auditory spatial signals initially arise in different reference frames. It has been postulated that auditory signals are translated from a head-centered to an eye-centered frame of reference compatible with the visual spatial maps, but, to date, only various forms of hybrid reference ...
  8. Distribution of eye position information in the monkey inferior colliculus.

    Journal of Neurophysiology 107(3):785 (2012) PMID 22031775 PMCID PMC3289473

    The inferior colliculus (IC) is thought to have two main subdivisions, a central region that forms an important stop on the ascending auditory pathway and a surrounding shell region that may play a more modulatory role. In this study, we investigated whether eye position affects activity in both...
  9. Distribution of eye position information in the monkey inferior colliculus.

    Journal of Neurophysiology 107(3):785 (2012) PMID 22031775 PMCID PMC3289473

    The inferior colliculus (IC) is thought to have two main subdivisions, a central region that forms an important stop on the ascending auditory pathway and a surrounding shell region that may play a more modulatory role. In this study, we investigated whether eye position affects activity in both...
  10. Sounds and beyond: multisensory and other non-auditory signals in the inferior colliculus.

    Frontiers in Neural Circuits 6:96 (2012) PMID 23248584 PMCID PMC3518932

    The inferior colliculus (IC) is a major processing center situated mid-way along both the ascending and descending auditory pathways of the brain stem. Although it is fundamentally an auditory area, the IC also receives anatomical input from non-auditory sources. Neurophysiological studies corro...
  11. Sounds and beyond: multisensory and other non-auditory signals in the inferior colliculus.

    Frontiers in Neural Circuits 6:96 (2012) PMID 23248584 PMCID PMC3518932

    The inferior colliculus (IC) is a major processing center situated mid-way along both the ascending and descending auditory pathways of the brain stem. Although it is fundamentally an auditory area, the IC also receives anatomical input from non-auditory sources. Neurophysiological studies corro...
  12. Distribution of visual and saccade related information in the monkey inferior colliculus.

    Frontiers in Neural Circuits 6:61 (2012) PMID 22973196 PMCID PMC3433683

    The inferior colliculus (IC) is an essential stop early in the ascending auditory pathway. Though normally thought of as a predominantly auditory structure, recent work has uncovered a variety of non-auditory influences on firing rate in the IC. Here, we map the location within the IC of neurons...
  13. Distribution of visual and saccade related information in the monkey inferior colliculus.

    Frontiers in Neural Circuits 6:61 (2012) PMID 22973196 PMCID PMC3433683

    The inferior colliculus (IC) is an essential stop early in the ascending auditory pathway. Though normally thought of as a predominantly auditory structure, recent work has uncovered a variety of non-auditory influences on firing rate in the IC. Here, we map the location within the IC of neurons...
  14. Systematic mapping of the monkey inferior colliculus reveals enhanced low frequency sound representation.

    Journal of Neurophysiology 105(4):1785 (2011) PMID 21307328 PMCID PMC3075276

    We investigated the functional architecture of the inferior colliculus (IC) in rhesus monkeys. We systematically mapped multiunit responses to tonal stimuli and noise in the IC and surrounding tissue of six rhesus macaques, collecting data at evenly placed locations and recording nonresponsive l...
  15. Systematic mapping of the monkey inferior colliculus reveals enhanced low frequency sound representation.

    Journal of Neurophysiology 105(4):1785 (2011) PMID 21307328 PMCID PMC3075276

    We investigated the functional architecture of the inferior colliculus (IC) in rhesus monkeys. We systematically mapped multiunit responses to tonal stimuli and noise in the IC and surrounding tissue of six rhesus macaques, collecting data at evenly placed locations and recording nonresponsive l...
  16. Effects of Initial Eye Position on Saccades Evoked by Microstimulation in the Primate Superior Colliculus: Implications for Models of the SC Read-Out Process.

    Frontiers in Integrative Neuroscience 4:130 (2011) PMID 21267431 PMCID PMC3025650

    The motor layers of the superior colliculus (SC) are thought to specify saccade amplitude and direction, independent of initial eye position. However, recent evidence suggests that eye position can modulate the level of activity of SC motor neurons. In this study, we tested whether initial eye p...
  17. Effects of Initial Eye Position on Saccades Evoked by Microstimulation in the Primate Superior Colliculus: Implications for Models of the SC Read-Out Process.

    Frontiers in Integrative Neuroscience 4:130 (2011) PMID 21267431 PMCID PMC3025650

    The motor layers of the superior colliculus (SC) are thought to specify saccade amplitude and direction, independent of initial eye position. However, recent evidence suggests that eye position can modulate the level of activity of SC motor neurons. In this study, we tested whether initial eye p...
  18. Comparison of gain-like properties of eye position signals in inferior colliculus versus auditory cortex of primates.

    Frontiers in Integrative Neuroscience 4 (2010) PMID 20838470 PMCID PMC2936885

    We evaluated to what extent the influence of eye position in the auditory pathway of primates can be described as a gain field. We compared single unit activity in the inferior colliculus (IC), core auditory cortex (A1) and the caudomedial belt (CM) region of auditory cortex (AC) in primates, an...
  19. Multisensory guidance of orienting behavior.

    Hearing Research 258(1-2):106 (2009) PMID 19520151 PMCID PMC2790026

    We use both vision and audition when localizing objects and events in our environment. However, these sensory systems receive spatial information in different coordinate systems: sounds are localized using inter-aural and spectral cues, yielding a head-centered representation of space, whereas t...
  20. Multisensory guidance of orienting behavior

    Hearing Research 258(1-2):106 (2009)

    We use both vision and audition when localizing objects and events in our environment. However, these sensory systems receive spatial information in different coordinate systems: sounds are localized using inter-aural and spectral cues, yielding a head-centered representation of space,...