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Message definition (J-RGC )
The ON surround of a JAM-B cell is typically asymmetric, in that it is shifted in the direction of preferred motion relative to the center. The receptive field center was found by Kim et al. to possess an OFF portion with an additional ON "overshoot." This ON feature of the center combines functionally with the ON surround such that a light moving in the preferred direction across the receptive field will pass through the combined ON features of center and surround. If the light is moving at the right speed, the time delay of the center invokes a superposition of the excitation of the ON and OFF regions, thus eliciting an enhanced response (see figure). It is this mechanism which purportedly allows an OFF RGC to respond to ''bright'' lights with strong direction-selectivity.
The ON surround of a JAM-B cell is typically asymmetric, in that it is shifted in the direction of preferred motion relative to the center. The receptive field center was found by Kim et al. to possess an OFF portion with an additional ON "overshoot." This ON feature of the center combines functionally with the ON surround such that a light moving in the preferred direction across the receptive field will pass through the combined ON features of center and surround. If the light is moving at the right speed, the time delay of the center invokes a superposition of the excitation of the ON and OFF regions, thus eliciting an enhanced response (see figure). It is this mechanism which purportedly allows an OFF RGC to respond to ''bright'' lights with strong direction-selectivity. Translation The ON surround of a JAM-B cell is typically asymmetric, in that it is shifted in the direction of preferred motion relative to the center. The receptive field center was found by Kim et al. to possess an OFF portion with an additional ON "overshoot." This ON feature of the center combines functionally with the ON surround such that a light moving in the preferred direction across the receptive field will pass through the combined ON features of center and surround. If the light is moving at the right speed, the time delay of the center invokes a superposition of the excitation of the ON and OFF regions, thus eliciting an enhanced response (see figure). It is this mechanism which purportedly allows an OFF RGC to respond to ''bright'' lights with strong direction-selectivity. The ON surround of a JAM-B cell is typically asymmetric, in that it is shifted in the direction of preferred motion relative to the center. The receptive field center was found by Kim et al. to possess an OFF portion with an additional ON "overshoot." This ON feature of the center combines functionally with the ON surround such that a light moving in the preferred direction across the receptive field will pass through the combined ON features of center and surround. If the light is moving at the right speed, the time delay of the center invokes a superposition of the excitation of the ON and OFF regions, thus eliciting an enhanced response (see figure). It is this mechanism which purportedly allows an OFF RGC to respond to bright lights with strong direction-selectivity.
