Task-dependent activations of human auditory cortex during spatial discrimination and spatial memory tasks

Rinne, Teemu; Koistinen, Sonja; Talja, Suvi; Wikman, Patrik; Salonen, Oili

doi:10.1016/j.neuroimage.2011.10.069

Cited by 18 publications

(33 citation statements)

References 25 publications

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“…Consistent with our previous studies using similar tasks, we found distinct activation patterns during vowel discrimination and 2-back tasks Rinne et al, 2009;Rinne et al, 2012;Fig. 4).…”

Section: Task Effectssupporting

confidence: 92%

“…Alternatively, the activation differences between Pr and NPr blocks during 2-back tasks could be due to differences in deactivation associated with 2-back tasks. Our previous studies using pitch, spatial or vowel categories have demonstrated that activations in wide STG areas decrease with increasing task-difficulty in n-back tasks (i.e., activations in these areas are weaker during 3-back than 1-back tasks; Rinne et al, 2009Rinne et al, , 2012; see also Huang, Seidman, Rossi, & Ahveninen, 2013). Here, we did not vary n-back task difficulty so that it is not possible to separate such deactivation effects from other differences between the task blocks.…”

Section: Activation Differences Between Prototype and Nonprototype Vomentioning

confidence: 94%

“…Although isolated vowels lack many key features of speech (e.g., fast transitions in consonant-vowel syllables), vowels can be used to study the basis of speech processing in a controlled manner. This is important because activations in auditory cortex (AC) and other cortical areas are strongly modulated by attention and task (Hall et al, 2000;Petkov et al, 2004;Rinne, Koistinen, Salonen, & Alho, 2009;Rinne, Koistinen, Talja, Wikman, & Salonen, 2012). As native speech is often hard to ignore, such effects are easier to control using isolated vowels (no word-level semantics) than words and phrases.…”

Section: Introductionmentioning

confidence: 99%

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Acoustical and categorical tasks differently modulate activations of human auditory cortex to vowels

Harinen

Rinne

2014

Brain and Language

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“…Consistent with our previous studies using similar tasks, we found distinct activation patterns during vowel discrimination and 2-back tasks Rinne et al, 2009;Rinne et al, 2012;Fig. 4).…”

Section: Task Effectssupporting

confidence: 92%

Section: Activation Differences Between Prototype and Nonprototype Vomentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

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Acoustical and categorical tasks differently modulate activations of human auditory cortex to vowels

Harinen

Rinne

2014

Brain and Language

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“…Topographically, these results are consistent with the locus of modulations observed during auditory attention (33,40,49) and spatial discrimination tasks (47,60). Despite significant differences in experimental design and analysis, the results reported here defining regional sensitivity to sound location and auditory task processing are strikingly similar to those reported by Häk-kinen et al (43).…”

Section: Spatial Listening Effects On the Cortical Topography Of Binasupporting

confidence: 90%

“…1A). Previous ILD-based results (14) and task-related attention studies (34,36,43,(45)(46)(47)(48)(49) suggest two competing hypotheses regarding how the spatial listening task (compared with the pitch or visual task) might modulate binaural cue (both ILD and ITD) response functions. Spatial listening might enhance the response overall, regardless of cue value (Fig.…”

mentioning

confidence: 99%

Evidence for cue-independent spatial representation in the human auditory cortex during active listening

Higgins

McLaughlin

Rinne

et al. 2017

Proc. Natl. Acad. Sci. U.S.A.

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Few auditory functions are as important or as universal as the capacity for auditory spatial awareness (e.g., sound localization). That ability relies on sensitivity to acoustical cues-particularly interaural time and level differences (ITD and ILD)-that correlate with sound-source locations. Under nonspatial listening conditions, cortical sensitivity to ITD and ILD takes the form of broad contralaterally dominated response functions. It is unknown, however, whether that sensitivity reflects representations of the specific physical cues or a higher-order representation of auditory space (i.e., integrated cue processing), nor is it known whether responses to spatial cues are modulated by active spatial listening. To investigate, sensitivity to parametrically varied ITD or ILD cues was measured using fMRI during spatial and nonspatial listening tasks. Task type varied across blocks where targets were presented in one of three dimensions: auditory location, pitch, or visual brightness. Task effects were localized primarily to lateral posterior superior temporal gyrus (pSTG) and modulated binaural-cue response functions differently in the two hemispheres. Active spatial listening (location tasks) enhanced both contralateral and ipsilateral responses in the right hemisphere but maintained or enhanced contralateral dominance in the left hemisphere. Two observations suggest integrated processing of ITD and ILD. First, overlapping regions in medial pSTG exhibited significant sensitivity to both cues. Second, successful classification of multivoxel patterns was observed for both cue types and-criticallyfor cross-cue classification. Together, these results suggest a higherorder representation of auditory space in the human auditory cortex that at least partly integrates the specific underlying cues.auditory space | binaural cues | human auditory cortex | fMRI | sound localization A cross species, one of the most important functions of hearing is the capacity to localize and orient to sound sources throughout 360°of extrapersonal space. This function relies on the neural processing of a variety of acoustical cues, but particularly on interaural time (ITD) and level differences (ILD) that convey sound-source directions in the horizontal dimension (azimuth). The acoustical basis of these cues is well understood: sound arrives earlier and with greater intensity at the ear nearest the source. The magnitudes of both cues depend systematically on azimuth angle, sound frequency, and head size/shape. Acoustic reflections from surfaces of the outer ear and of the listening room further alter these cues in a frequency-and cuespecific manner.In the absence of echoes and reverberation, ITD and ILD cues vary more or less in parallel (i.e., redundantly) and human listeners appear to use the cues interchangeably. However, ITD is the psychophysically dominant cue for localization when sounds contain energy below ∼1.5 kHz (1-3). For higher-frequency sounds, ILD tends to dominate, although ITD carried by fluctuations in the sound envelope a...

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The impact of task difficulty on the lateralization of processing in the human auditory cortex

Brechmann

Angenstein

2019

Human Brain Mapping

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Perception of complex auditory stimuli like speech requires the simultaneous processing of different fundamental acoustic parameters. The contribution of left and right auditory cortex (AC) in the processing of these parameters differs. In addition, activity within the AC can vary positively or negatively with task performance depending on the type of task. This might affect the allocation of processing to the left and right AC. Here we studied with functional magnetic resonance imaging the impact of task difficulty on the degree of involvement of the left and right AC in two tasks that have previously been shown to differ in hemispheric involvement: categorization and sequential comparison of the direction of frequency modulations (FM). Task difficulty was manipulated by changing the speed of modulation and by that the frequency range covered by the FM. To study the impact of task‐difficulty despite covarying the stimulus parameters, we utilized the contralateral noise procedure that allows comparing AC activation unconfounded by bottom‐up driven activity. The easiest conditions confirmed the known right AC involvement during the categorization task and the left AC involvement during the comparison task. The involvement of the right AC increased with increasing task difficulty for both tasks presumably due to the common task component of categorizing FM direction. The involvement of left AC varied with task difficulty depending on the task. Thus, task difficulty has a strong impact on lateralized processing in AC. This connection must be taken into account when interpreting future results on lateralized processing in the AC.

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Task-dependent activations of human auditory cortex during spatial discrimination and spatial memory tasks

Cited by 18 publications

References 25 publications

Acoustical and categorical tasks differently modulate activations of human auditory cortex to vowels

Acoustical and categorical tasks differently modulate activations of human auditory cortex to vowels

Evidence for cue-independent spatial representation in the human auditory cortex during active listening

The impact of task difficulty on the lateralization of processing in the human auditory cortex

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