Physiological reactions are too slow to explain emotions

The argument

Physiologists William Cannon and Philip Bard developed their theory of emotion as a direct critique of the James-Lange theory. Cannon and Bard observed that, contrary to the James-Lange theory's assertion that physiological arousal is the starting point for emotion, emotional sensations are often felt at the same time or even before any associated physiological responses. For example, the feeling of being afraid in a dangerous situation can be followed by physiological symptoms such as shivering and an increased heart rate. The Cannon-Bard theory claims that both emotions and physiological symptoms are the result of neurological signals. When a person receives sensory information about some external stimulus, signals originating in the thalamus are sent to various parts of the brain which control emotional and physiological responses. Thus, physiology and emotions are affected simultaneously, without one sequentially causing the other.

Premises

Counter-arguments

The timing objection has not aged well. Autonomic responses can be extremely fast, and a substantial body of later work describes rapid subcortical routes — sensory information reaching the amygdala and triggering defensive responses before the stimulus is consciously identified — so bodily reaction frequently precedes rather than lags the felt emotion. Cannon's estimate of visceral sluggishness reflected the measurement available at the time, and the premise inherits that limitation. The evidence offered for the claim is also introspective. That fear seems to arrive before the shivering is a report about when a person becomes aware of each, and awareness of a bodily change lags the change itself; the ordering of experiences is not the ordering of events. Deciding between theories on this point requires instrumentation rather than recollection. The positive proposal has dated further. The thalamic relay model is a product of early twentieth-century lesion work; emotion is now attributed to distributed circuits involving the amygdala, insula, anterior cingulate and prefrontal regions, with the thalamus one waystation among several. Preserving the theory's name is reasonable; presenting its neuroanatomy as the account of how emotion arises is not. And the theory's central move has a cost the argument does not weigh. Saying that emotion and physiology are triggered simultaneously by neural signals, with neither causing the other, avoids the sequencing problem by declining to explain the part most in need of explanation: why this stimulus produces fear rather than anger or exhilaration. That is the gap the Schachter-Singer and Lazarus positions were built to fill, both of which make the appraisal of a situation the determinant — a role the simultaneity model leaves vacant.

Rejecting the premises

[Rejecting P1] The timing claim rests on introspective reports about when each experience is noticed, and awareness of a bodily change lags the change itself; later work describes rapid subcortical routes in which sensory information triggers defensive bodily responses before the stimulus is consciously identified, so physiological reaction often precedes rather than follows the felt emotion. [Rejecting P2] The thalamic relay model derives from early twentieth-century lesion work and has been superseded by accounts distributing emotion across amygdala, insula, cingulate and prefrontal circuits, with the thalamus one waystation among several. [Rejecting C] Declaring emotion and physiology simultaneous and causally independent resolves the sequencing dispute by declining to explain what most needs explaining — why a given stimulus yields fear rather than anger or exhilaration — which is the gap the Schachter-Singer and Lazarus positions fill by making situational appraisal the determinant.