Spike Timing Matters in Novel Neuronal Code Involved in Vibrotactile Frequency Perception
- Birznieks, I
- Vickery, RM
DOIAbstract
Skin vibrations sensed by tactile receptors contribute significantly to the perception of object properties during tactile exploration [1–4] and to sensorimotor control during object manipulation [5]. Sustained low-frequency skin vibration (<60 Hz) evokes a distinct tactile sensation referred to as flutter whose frequency can be clearly perceived [6]. How afferent spiking activity translates into the perception of frequency is still unknown. Measures based on mean spike rates of neurons in the primary somatosensory cortex are sufficient to explain performance in some frequency discrimination tasks [7–11]; however, there is emerging evidence that stimuli can be distinguished based also on temporal features of neural activity [12, 13]. Our st...
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