Effects of unilateral ablation of auditory cortex in cat on complex sound localization.

Whitfield, I. C.; Cranford, Jerry L.; Ravizza, Richard; Diamond, Irving T.

doi:10.1152/jn.1972.35.5.718

Cited by 75 publications

(22 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This developmental ordering may reflect a mammalian pattern, i.e., that various aspects of behavioral auditory localization are mediated by different processes during the course of infant development. This interpretation is supported by neuroanatomical work on the role of the auditory cortex in the precedence effect, mostly with adult cats (e.g., Whitfield et al, 1972Whitfield et al, , 1978. This work suggests that the auditory cortex plays a critical role in mediating localization under precedence effect conditions, although the specific binaural processes involved have not been unequivocally demonstrated (Cranford & Oberholtzer, 1976).…”

Section: Single Source Versus Precedence Effect Sound Localizationmentioning

confidence: 87%

“…But for precedence-effect sounds, the system must compare the arrival times of the leading and lagging sounds and then suppress perception of the lagging sound. Evidence from adult cats suggests that precedence-effect and single-source sound localization involve different CNS structures (Whitfield, Cranford, Ravizza, & Diamond, 1972;Whitfield, Diamond, Chiveralls, & Williamson, 1978). Localization of precedence effect sounds appears to depend on an intact auditory cortex contralateral to the side of the leading sound.…”

mentioning

confidence: 98%

See 1 more Smart Citation

Development of auditory localization in dogs: Single source and precedence effect sounds

Ashmead

Clifton

Reese

1986

Developmental Psychobiology

View full text Add to dashboard Cite

The development of auditory localization in dogs was investigated in a litter of 12 pups. Behavioral auditory localization consisted of orienting responses to dog vocalizations presented from loudspeakers 90 degrees to each side. Sounds were presented in two configurations, single source (only one loudspeaker) and precedence effect (both loudspeakers, with one slightly leading the other). Localization began around 16 days after birth, for single-source sounds. This is consistent with previous observations and with findings on dogs' auditory neural development. Single-source sounds were localized earlier during development than precedence-effect sounds. This ordering resembles findings on human infants and can be related to neuroanatomical investigations of mammalian brain structures mediating single source versus precedence effect localization.

show abstract

Section: Single Source Versus Precedence Effect Sound Localizationmentioning

confidence: 87%

mentioning

confidence: 98%

Development of auditory localization in dogs: Single source and precedence effect sounds

Ashmead

Clifton

Reese

1986

Developmental Psychobiology

View full text Add to dashboard Cite

show abstract

“…It is one of the primary tasks of auditory brainstem nuclei to extract such information. Despite this, although removal of cat auditory cortex eliminates the ability to localize (Kaas et al, 1967;Strominger, 1969;Cranford et al, 1971;Whitfield et al, 1972), and although some cells in primary auditory cortex have receptive fields specific to particular regions of auditory space (Masterton and Imig, 1984;Imig et al, 1990;Brugge et al, 1996;Irvine, 1998), no map of space is found there.…”

Section: Discussionmentioning

confidence: 99%

Fundamental differences between the thalamocortical recipient layers of the cat auditory and visual cortices

Smith

Populin

2001

J of Comparative Neurology

118

View full text Add to dashboard Cite

In visual and somatosensory cortices of several species, spiny stellate cells in layer 4 are the first elements in signal processing where thalamic information is integrated and emergent receptive field properties are generated and sent on to more superficial cortical layers. In vivo and in vitro experiments have provided important information about how the anatomy and physiology of these cells and this layer fit into the functional cortical circuitry. No such data exist for the auditory cortex but are requisite if we are to understand whether ideas about information processing in one sensory cortical area can be generalized to another. Accordingly, we used in vitro slices from which to record and labeled cells in the middle layers of the cat auditory and visual cortices to compare basic anatomical and physiological features of cells recovered in similar layers using the same methods. Our results demonstrate a striking difference in a basic characteristic of two primary sensory cortical areas. In the visual cortex, spiny stellate cells predominate, receive short-latency synaptic inputs, and project to supergranular layers. No such spiny stellate population is encountered in the middle layers of the auditory cortex. Spiny cells that are not stellate or pyramidal are occasionally encountered but, as a group, do not display consistent anatomical or physiological features that might allow them to function as auditory cortical versions of the visual spiny stellates. Rather, pyramidal cells in the lower half of layer 3 and layer 4 appear to have assumed this role.

show abstract

“…The response of auditory neurons to simulated reverberant conditions has been studied in a number of nuclei and in various species (cat: Whitfield et al, 1972;Cranford and Oberholtzer, 1976;Yin, 1994;rabbit: Fitzpatrick et al, 1995;rat: Kelly, 1974;mouse: Wickesberg and Oertel, 1990;bat: Yang andPollak, 1994, 1995;cricket: Wyttenbach and Hoy, 1993;barn owl: Keller and Takahashi, 1996). Most of these studies have examined the effects of delays on the order of milliseconds, which are much longer than those used in the present study.…”

Section: Comparisons With Other Neurophysiological Studiesmentioning

confidence: 99%

Binaural Cross-Correlation Predicts the Responses of Neurons in the Owl’s Auditory Space Map under Conditions Simulating Summing Localization

Keller

Takahashi

1996

J. Neurosci.

View full text Add to dashboard Cite

Summing localization describes the perceptions of human listeners to two identical sounds from different locations presented with delays of 0 -1 msec. Usually a single source is perceived to be located between the two actual source locations, biased toward the earlier source. We studied neuronal responses within the space map of the barn owl to sounds presented with this same paradigm. The owl's primary cue for localization along the azimuth, interaural time difference (ITD), is based on a cross-correlation-like treatment of the signals arriving at each ear. The output of this cross-correlation is displayed as neural activity across the auditory space map in the external nucleus of the owl's inferior colliculus. Because the ear input signals reflect the physical summing of the signals generated by each speaker, we first recorded the sounds at each ear and computed their cross-correlations at various interstimulus delays. The resulting binaural cross-correlation surface strongly resembles the pattern of activity across the space map inferred from recordings of single space-specific neurons. Four peaks are observed in the cross-correlation surface for any nonzero delay. One peak occurs at the correlation delay equal to the ITD of each speaker. Two additional peaks reflect "phantom sources" occurring at correlation delays that match the signal of the left speaker in one ear with the signal of the right speaker in the other ear. At zero delay, the two phantom peaks coincide. The surface features are complicated further by the interactions of the various correlation peaks.

show abstract

Effects of unilateral ablation of auditory cortex in cat on complex sound localization.

Cited by 75 publications

References 0 publications

Development of auditory localization in dogs: Single source and precedence effect sounds

Development of auditory localization in dogs: Single source and precedence effect sounds

Fundamental differences between the thalamocortical recipient layers of the cat auditory and visual cortices

Binaural Cross-Correlation Predicts the Responses of Neurons in the Owl’s Auditory Space Map under Conditions Simulating Summing Localization

Contact Info

Product

Resources

About